Frequently asked questions

People who own a 3D printer and need a functional part that fits something they have: an enclosure for their board, a box sized to what goes inside, a bracket on their screws, a holder for their tools, a copy of a broken clip or knob, or a change to an STL they downloaded. No CAD skills needed, on a phone or a computer. If you only need to slice a file you already have, any slicer does that; if you have no printer, SpeakCAD can print the part for you, but the editor is made for people who print at home.

Yes for the hand tools and the files they make. AI requests use credits, and so do downloads of AI work without a plan. Free, no card: the hand tools (hole with a screw head, cut, add, extrude, text, rounded corners and edges, shell, measure, copies in a row, a grid or a circle, every size and position typed in millimetres) on the live demo without an account and in a free account, where a part you shaped by hand downloads free as STL or 3MF; the live demo's 3 AI edits of a real part; opening one of the 650+ ready-made library models in a free account, resizing it in the viewer and downloading it as STL or 3MF; and the Fit Check coupon as STL or 3MF. A new free account also gets its first AI part free (not offered in every country): some accounts get the credits right away, others confirm with a card first (a free trial, nothing charged that day); downloading the part spends 4 credits without a plan, like any AI work (every plan includes downloads). Shaping a part by hand (a hole and its screw head, a cut, an added tab, raised or engraved text, an extruded face, rounded corners, and copies in a row, a grid or a circle) and downloading what you shaped are free. A new part or a design change by the AI spends 3 credits, a small change 2, a quick edit 1; downloads are included in every plan (4 credits without one), and G-code sliced for your printer costs the same as the STL. G-code sliced for your printer costs the same as the STL: included in every plan, free for a part you shaped by hand, 4 credits without a plan for a part with AI work in it. Credits come with a plan, or once as a top-up. A typical AI part (the part, a small change and a few quick edits, the download included) spends about 8 credits, so Maker's 50 credits a month cover about six AI parts. Maker $7.99/mo (50 credits a month, downloads included, sliced G-code too); Pro $14.99/mo (200 credits a month); Unlimited $79.99/mo (300 AI requests a month included, downloads unlimited). Credits can also be bought once, without a plan: 20 for $4.99, 50 for $9.99, 100 for $17.99 or 200 for $34.99. They never expire and add to a plan's credits; a credit costs less the bigger the top-up, and more than on any plan.

Yes, and it is designed for it. The full editor runs in Safari on iPhone and iPad and in Chrome on Android: tap a face for a hole, a cut, an added tab, text, an extruded face or rounded corners and type the millimetres, or describe the part to the AI; orbit the live render with a finger and download the STL, 3MF or G-code to Files or Downloads. There is no app to install and nothing is missing compared to the desktop; the same project opens on both. Because a part is shaped with a tap and a typed number, or described, rather than drawn, a phone screen and a thumb are enough, which is why SpeakCAD is the 3D editor most people can actually use at the printer.

Yes. Describe the part, check the render, then choose G-code in the download dialog and pick your printer (more than 380 models from Bambu Lab, Prusa, Creality, Elegoo, Anycubic, Sovol, Qidi, Voron and others). You then choose from that printer's own OrcaSlicer print profiles (0.12 mm Fine, 0.20 mm Standard, Strength, Draft...) and filament profiles (Generic PLA, Bambu PETG HF, Prusament, Polymaker and hundreds more), plus speed, infill, walls, supports and adhesion. You get a .gcode file, or a sliced .gcode.3mf for Bambu printers, with the estimated print time and filament weight. Your printers and their last settings are saved to your account, so the next download is one click. G-code sliced for your printer costs the same as the STL: included in every plan, free for a part you shaped by hand, 4 credits without a plan for a part with AI work in it. Re-slicing the same design with other settings is free.

Yes. SpeakCAD's online slicer (speakcad.com/online-slicer) takes an STL or 3MF of up to 50 MB, slices it with the unmodified OrcaSlicer and the profile of your printer (380+ models from 60+ brands), and gives you a .gcode, or a sliced .gcode.3mf for Bambu Lab printers, with the print time and filament weight. You choose the layer height, filament, infill, supports, speed, walls and bed adhesion. It runs in the browser on a computer, a Chromebook, an iPad or a phone, with nothing to install. Free with a free account, no card, no credits: up to 10 files a day (60 on a paid plan). The model is sliced as it is; to change it first, use the AI editor.

The online slicer is free with a free account (no card, no credits): up to 10 files a day, and re-slicing the same file with other settings within 24 hours does not count. Accounts on a paid plan slice up to 60 files a day. Credits only pay for the AI editor.

It goes from your browser straight to the slicer service, never through SpeakCAD's web servers. It is sliced in a temporary folder that is deleted when the job ends, and it is not kept.

No. If you can measure the object with a ruler or calipers, you can model it: nine hand tools (hole, cut, add, extrude, text, round, fillet, shell and measure) that ask for sizes and positions in millimetres, and a chat for everything you would rather describe. There are no sketches, constraints or toolbars to learn. Engineers still use SpeakCAD as a fast first draft or for simple brackets and adapters.

Start from a box, plate, cylinder or tray, or from your own STL or 3MF (upload it with the Upload an STL or 3MF card in a new model's empty editor, drop it on the Edit an STL box with the change left empty, on the online slicer and press Change it with AI with nothing typed, or on SpeakCAD's card in ChatGPT or Claude with no change), tap a face and pick Hole, Cut, Add, Extrude, Text, Round, Fillet, Shell or Measure. Each tool asks for its sizes in millimetres (a hole has M2 to M8 clearance presets, a Through depth and a counterbore or a countersink for the screw head; a cut is a rectangle, circle, slot or hexagon, with M2 to M8 nut-trap presets for the hexagon; Add puts a tab or boss on the face; Round rounds or chamfers the corners of a part; Text writes raised or engraved letters, up to 40 characters in one bold sans font). Extrude pulls a whole flat face out, or pushes it in, by the distance you type; a curved face is an AI request. Fillet rounds or chamfers the straight edges around a flat face you tap, all of them or the ones you pick (the top edges of a box, one front edge, the rim of a hole); around a shape standing on the face it adds a fillet at its foot. An edge of a curved face, a variable fillet or a blend between fillets is an AI request. Shell hollows a part to the wall thickness you type, open on the face you tapped or closed inside. A hole, a cut, an added shape or a text lands where you tap, and its Position rows set its centre in millimetres from the face's edges (Centre 12 mm from the left edge), before you apply it or later on its card. Duplicate, on the card of a placed hole, cut, tab or text, makes copies of it in a row, a grid or a circle (and of a hole, a cut or a tab, a mirror image), up to 100. The part rebuilds in your browser in about a second, and every edit is a numbered version you can undo or remove later. Shaping a part by hand (a hole and its screw head, a cut, an added tab, raised or engraved text, an extruded face, rounded corners, and copies in a row, a grid or a circle) and downloading what you shaped are free. A new part or a design change by the AI spends 3 credits, a small change 2, a quick edit 1; downloads are included in every plan (4 credits without one), and G-code sliced for your printer costs the same as the STL. The tools also work on any other part in your account (a library model, a pasted program, a part the AI worked on): the hand edits stay free, and its download is included in every plan (4 credits without one, with a design you already downloaded, or a small fix of it, re-downloading free). What the tools cannot do (round a single edge, hollow a part, move a lid, build from a photo) is one AI request away in the same chat, and the AI keeps your hand edits.

For a printed part with real dimensions, SpeakCAD: you tap the face where a hole, a cut or a tab goes and type its size and its distance from the edges, on a phone or a computer, and the AI is there when you would rather describe it. Measured on the editor: an M4 hole 6 mm from two edges of a plate, 4 taps and 2 typed numbers; an open box with 8 mm rounded corners, 2 taps and 1 typed number on a computer (3 taps on a phone); the plate's top face pulled out 5 mm, 3 taps; the same hole moved 10 mm, 1 tap and 1 typed number; a row of four M4 holes 10 mm apart, 6 taps and 4 typed numbers. Tinkercad fits better for a first lesson in CAD on a computer, a classroom in particular: it is free in full and you build by dragging blocks, but it does not run on a phone. Onshape fits better when you need sketches with constraints, fillets on the edges you pick, assemblies or STEP files, and accept a real learning curve and public documents on its free plan. The counts, the method and the sources are at speakcad.com/intuitive-cad.

Yes, in the browser, with nothing to install: SpeakCAD runs in Safari on iPhone and iPad and in Chrome on Android. Start from a box, a plate, a cylinder or a tray, tap a face and use the hand tools (Hole, Cut, Add, Extrude, Text, Round, Fillet, Shell and Measure), typing every size and position in millimetres, or describe the part to the AI. The STL, 3MF or G-code downloads to Files or Downloads. A part shaped by hand downloads free with a free account; AI requests use credits, and downloads of AI work are included in every plan. The live demo works on a phone without an account.

In SpeakCAD, tap Hole, tap the face of the part, pick a size (M2 to M8 clearance presets, Through for all the way) and type the hole centre's distance from two edges of that face, such as 6 mm from the left edge and 6 mm from the front edge, then press Apply hole: measured on a plate, 4 taps and 2 typed numbers. To do it on your own STL or 3MF without an AI turn, open the file with no change typed (upload it with the Upload an STL or 3MF card in a new model's empty editor, drop it on the Edit an STL box with the change left empty, on the online slicer and press Change it with AI with nothing typed, or on SpeakCAD's card in ChatGPT or Claude with no change). The hole stays editable: retype its distances or tap Move to put it somewhere else. Adding it, and downloading a file you changed only by hand, is free with a free account. Guide: speakcad.com/guides/hole-at-exact-distance-from-edge

In SpeakCAD, place one hole and tap Duplicate on its card: Line, Copies 4 and Spacing 20 make four holes 20 mm apart, centre to centre. To do it on your own STL or 3MF without an AI turn, open the file with no change typed (upload it with the Upload an STL or 3MF card in a new model's empty editor, drop it on the Edit an STL box with the change left empty, on the online slicer and press Change it with AI with nothing typed, or on SpeakCAD's card in ChatGPT or Claude with no change), tap Hole, tap the face, pick the size (M2 to M8 presets) and type the first hole's distance from the face's edges, then press Apply hole and Duplicate. Grid makes rows of them (four corner holes are a 2 × 2 grid), Circle a bolt circle around the face's centre or a point you tap, and Mirror a twin across the face's centre line; up to 100 copies, whose count and spacing stay numbers you can change. It is free, and so is downloading a file you changed only by hand, with a free account. Guide: speakcad.com/guides/duplicate-a-hole-pattern

For an M3 flat head screw (ISO 10642 or DIN 7991), a 90° countersink 6.6 mm across at the surface over a 3.4 mm clearance hole. For an M3 socket head cap screw, a counterbore 6.5 mm across and 3.4 mm deep instead. Both are rounded up for printing, because a printed hole comes out 0.2 to 0.4 mm small. In SpeakCAD they are the presets: tap Hole, tap the face, M3, then Screw head: Countersink or Counterbore, and Apply hole; the Head diameter stays a number you can change if your screws measure differently. A countersink facing the bed prints without supports (a 45° overhang). The M2 to M8 table: speakcad.com/guides/countersink-counterbore-screw-hole

In SpeakCAD, tap Text, tap a flat face, type up to 40 characters, choose Raised or Engraved and the Letter height, and press Apply text. To do it on your own STL or 3MF without an AI turn, open the file with no change typed (upload it with the Upload an STL or 3MF card in a new model's empty editor, drop it on the Edit an STL box with the change left empty, on the online slicer and press Change it with AI with nothing typed, or on SpeakCAD's card in ChatGPT or Claude with no change). The Depth sets how far the letters stand up or sink in; letters 5 mm tall and 0.6 to 1 mm deep read well with a 0.4 mm nozzle; the Position rows place the text from the face's edges and an Angle turns it. The font is a bold sans, the same for every text, and the text stays a feature: retype its Letter height, Depth or Angle, Move it or Duplicate it. It is free, and so is downloading a file you changed only by hand, with a free account; text that wraps around a curved face is an AI request (2 credits). Guide: speakcad.com/guides/add-text-to-a-3d-print

Yes. SpeakCAD's hand tools (Hole, Cut, Add, Extrude, Text, Round, Fillet, Shell and Measure) need no AI: Shaping a part by hand (a hole and its screw head, a cut, an added tab, raised or engraved text, an extruded face, rounded corners, and copies in a row, a grid or a circle) and downloading what you shaped are free. A new part or a design change by the AI spends 3 credits, a small change 2, a quick edit 1; downloads are included in every plan (4 credits without one), and G-code sliced for your printer costs the same as the STL. They run in the browser on a phone or a computer, and the live demo needs no account. Other free options, without AI: Tinkercad, free in full on a computer (no phones, no fillet tool); Onshape's free plan, full parametric CAD whose documents are all public and for non-commercial use; and FreeCAD, free desktop software with a steeper learning curve.

For 3D printing, start with a real part rather than a lesson: SpeakCAD is the easiest way to start CAD for 3D printing. You begin from a box, a plate, a cylinder or a tray that already has its sizes, tap the face where a hole, a cut or a tab goes and type the millimetres, on your phone or computer, with nothing to install; the AI is there when you are stuck. Measured on the editor: an M4 hole 6 mm from two edges of a plate, 4 taps and 2 typed numbers. Tinkercad is the gentler first lesson about shapes on a computer, for a child or a classroom; Onshape or Fusion is where to learn professional CAD with sketches and constraints. A first part in six steps, the ideas every CAD shares and a first week of parts: speakcad.com/cad-for-beginners.

Yes, by hand and free. Fillet rounds or chamfers the straight edges around a flat face: tap the face (the top of a box, say), set a radius or a chamfer size and keep all its edges or only the ones you pick, one front edge or the rim of a hole; around a tab or a boss standing on the face it adds a fillet at its foot. Round rounds or chamfers the corners of a part: tap a face, and the edges parallel to that face's normal get the radius (the vertical corners of a box; a pocket you cut by hand gets its own corner radius on the Cut card). On your own STL or 3MF opened with no AI turn, the whole file is one part, so Round rounds the corners of its outline seen from the face you tapped: right for a boxy part, and refused when the radius would take off more than the corners. An edge of a curved face, a variable fillet or a blend between fillets is an AI request, a small change (2 credits). The rounding is built into the model, so the STL, 3MF and G-code carry it.

No. SpeakCAD runs entirely in your browser: the chat, the 3D engine and the live viewer all load inside the tab. There is no software to download or install, no app store, no plugin, no GPU requirement and no licence key. It works on iPhone, iPad and Android as well as on macOS, Windows, Linux and Chromebooks with a current Safari, Chrome, Edge or Firefox. The only files you ever download are your finished STL, 3MF or G-code.

Yes. The live demo on the homepage (and at speakcad.com/demo) is the real editor with a real part already loaded: an ESP32 enclosure, an AirTag keychain holder, a drawer organizer tray or a phone stand, picked at random. Shape it by hand (tap a face for a hole, a cut, an added tab, text, an extruded face or rounded corners), edit it by chat (“make the lip 4 mm taller”) or click a part of the model and type a new number, and watch it rebuild in your browser. No sign-up, no card, nothing to install; it works on a phone too. The hand tools are free and not counted; the demo allows 3 AI edits of that part. With a free account (still no card) the hand tools stay free, a part you shaped by hand downloads free as STL or 3MF, and you can open one of the 650+ ready-made models in the library, turn it around in 3D and resize it by typing numbers in the viewer. A new free account also gets its first AI part free (not offered in every country): some accounts get the credits right away, others confirm with a card first (a free trial, nothing charged that day); downloading the part spends 4 credits without a plan, like any AI work (every plan includes downloads). Further AI requests use credits, which come with a plan, and every plan includes downloads: Maker is $7.99 a month for 50 credits, cancel anytime.

Shaping a part by hand (a hole and its screw head, a cut, an added tab, raised or engraved text, an extruded face, rounded corners, and copies in a row, a grid or a circle) and downloading what you shaped are free. A new part or a design change by the AI spends 3 credits, a small change 2, a quick edit 1; downloads are included in every plan (4 credits without one), and G-code sliced for your printer costs the same as the STL. Credits come with a plan. Start with Maker: $7.99 a month for 50 credits, with STL, 3MF and G-code downloads included; the credits land on your balance instantly and never expire. Pro is $14.99 a month for 200 credits; Unlimited is $79.99 a month with 300 AI requests a month and unlimited downloads. Credits are spent per AI request (3 for a new part or a design change, whichever model answers it: SpeakCAD picks a quick model for small edits, deeper reasoning for new parts and redesigns, and a stronger model whenever an answer misses; 2 for a small change or a fix; 1 for a quick edit such as a changed number; up to 10 on a very large model, said before you send). Downloads are included in every plan; without a plan, a download of a part with AI work in it spends 4 credits. A typical AI part (one request, one change and a few quick edits) spends about 8 credits on a plan, so Maker covers about 6 a month. Turning the model around in 3D and changing its numbers in the viewer are free. Models stay private on every plan, and you can cancel anytime. Without a plan, small fixes to a downloaded design re-download free. Credits can also be bought once, without a plan: 20 for $4.99, 50 for $9.99, 100 for $17.99 or 200 for $34.99. They never expire and add to a plan's credits; a credit costs less the bigger the top-up, and more than on any plan. Marketplace sales pay extra credits on top.

Yes. The price you see is the price you pay: $7.99, $14.99 or $79.99 a month for a plan, taxes included. Where VAT or sales tax applies, it is part of that amount and shown on your Stripe receipt. Nothing is added at checkout, and businesses can enter a VAT number there.

Some new accounts are offered a free trial of Maker (or Pro): add a card, nothing is charged that day and you get 3 credits free; the plan starts after 7 days, or sooner only if you choose to continue once the free credits are used, and if you cancel before it starts you pay nothing. The other new accounts get free credits for their first AI part straight away (not offered in every country). You do not need one to try SpeakCAD for real: the hand tools are free, with or without an account, and a part you shaped by hand downloads free with a free account; the live demo lets you shape and edit a real part without signing up. For more AI, Maker is $7.99 a month for 50 credits, enough for about 6 AI parts a month with a change and a few quick edits each, downloads included. The plans have no commitment: cancel anytime in the billing portal, and the first charge of a new subscription is refunded within 14 days if SpeakCAD is not for you.

You do not pay for the file again: downloads are included in every plan, and without a plan the corrected design re-downloads free. Fix it yourself by typing the new number in the viewer or tapping Too tight or Too loose in Fit Check, which is free, or ask the AI for the fix (“the hole needs to be 0.4 mm wider”), which is one request (1 credit for a quick edit like this one, 2 for a small change, 3 for a design change). Without a plan, a download is charged again only when the design changes substantially: a new object, or a different overall shape or size. Downloading the same design in both STL and 3MF uses credits only once, and going back to a version you already downloaded is free.

SpeakCAD is the only AI 3D editor that calibrates itself to your printer: Fit Check cuts a five-minute test slice from the part that must fit, you report too tight, perfect or too loose, and every model after that is built with the clearance your printer needs. The test slice (a “fit coupon”) is cut from your model itself, around the interface the AI marked as having to fit a real object: a phone slot, a PCB pocket, a snap lid, a magnet hole. It keeps the print orientation of the final part, prints in about five minutes with a gram or two of filament, and costs no credits on any plan as STL or 3MF; G-code sliced for your printer costs the same as the STL: included in every plan, free for a part you shaped by hand, 4 credits without a plan for a part with AI work in it. You give the verdict with three buttons on your phone, next to the printer.

Open Fit check on the model and tap “Too tight” or “Too loose”. SpeakCAD adds or removes 0.1 mm of clearance and rebuilds the model; print the five-minute fit coupon to confirm instead of reprinting the whole part. While your printer is not calibrated yet, the correction is saved as your printer's calibration and applied to every later model; once a coupon has been reported perfect, a correction only changes the model in front of you. You can also just tell the AI (“the phone is too tight”), which is one small change (2 credits). Re-downloading after a fit correction is free.

Binary STL, 3MF, or G-code already sliced for your printer (at the price of the STL). STL and 3MF open directly in PrusaSlicer, Bambu Studio, OrcaSlicer, Cura and every other mainstream slicer; 3MF keeps the millimetre unit and the model name embedded, so nothing is lost on import. G-code goes straight to the printer.

Yes. Models are built with solid CSG geometry (booleans on closed solids) and exported as manifold meshes, so slicers do not need repair. The AI also follows FDM design rules by default: minimum wall thickness, clearances for fits, parts resting flat on the bed.

Yes. Attach images as references (the AI reads them), attach a .stl or .3mf to modify or build around (for example a lid for an existing box), or attach an OpenSCAD .scad file to continue an existing parametric design.

Yes, that is the most common way people arrive. ChatGPT, Claude and Gemini describe parts well and can write OpenSCAD, but they have no CAD kernel: they cannot compile the code, check the geometry or export a mesh. Paste the description (or the OpenSCAD) into the SpeakCAD chat as it is: every dimension is used exactly, the model renders in your browser, and you download a watertight STL or 3MF, or G-code sliced for your printer. With the SpeakCAD plugin in ChatGPT or the connector in Claude there is nothing to paste: the assistant hands the description to SpeakCAD and the part appears in 3D in the chat.

Yes. SpeakCAD works inside ChatGPT and Claude as a plugin (an MCP server): ask the assistant for a part with its measurements and SpeakCAD's own CAD AI designs it, shows it in 3D in the chat and hands over a print-ready STL, 3MF or G-code sliced for your printer. In ChatGPT it is a plugin (Settings, Plugins, search for SpeakCAD); in Claude a connector (Customize, Connectors); either way you sign in with your SpeakCAD account, and designs and changes spend its credits, with downloads included in every plan, exactly as on the site. The part is saved in your SpeakCAD models and opens in the full editor in one click.

Yes, two remote MCP servers (Streamable HTTP), nothing to install. https://speakcad.com/api/mcp signs in with your SpeakCAD account (OAuth 2.1, no API key) and designs, changes, downloads and slices parts; https://speakcad.com/api/mcp/slicer needs no sign-in and turns an STL or 3MF you already have into G-code for 380+ printers. They work in Claude, ChatGPT, Claude Code, Cursor, VS Code and any MCP client with OAuth.

Yes. To add a hole, a cut or a tab yourself, upload it with the Upload an STL or 3MF card in a new model's empty editor, drop it on the Edit an STL box with the change left empty, on the online slicer and press Change it with AI with nothing typed, or on SpeakCAD's card in ChatGPT or Claude with no change: the file opens as a model with no AI turn, the hand tools on it are free, and a file shaped only by hand downloads free. Or upload it with what to change and the measurements (one AI request): add a lid, cut a hole, add mounting tabs or text, thicken the base, or ask for a parametric rebuild with the same outer size so every dimension becomes editable. The AI works from the mesh's outer dimensions and the holes measured in it, and adds to, cuts into or rebuilds around it; it does not move triangles, so a change that depends on detail it cannot measure (an angled hole, a clip) needs its position in the message or a photo with a ruler. Scaling a mesh is possible but scales the holes with it, which is why a rebuild is usually the better fix.

Yes. Describe it in Portuguese, Spanish, French, German, Italian or another language: the AI replies in that language and uses your dimensions exactly, in millimetres. The site itself is also available in Português, Español, Français, Deutsch and Italiano.

Dimensions you specify are used exactly, in millimetres. When you do not give a size, the AI picks sensible defaults and tells you what it assumed. Every dimension is a named parameter in the model, so correcting one is a single sentence.

The first render usually appears within a minute or two: a new part gets deeper reasoning through the geometry, and small edits land in seconds. A typical functional part, with a couple of edits and a dimension check, is a downloaded file in about 10 to 15 minutes. G-code takes the slicing time on top, usually well under a minute, and the file is ready to send to the printer with the estimated print time and filament weight shown.

Generative mesh tools imagine a shape; SpeakCAD computes one. Meshy and Tripo produce sculpted meshes with approximate scale, made for figurines, props and game assets. SpeakCAD writes a parametric CAD program from your description, so a 78 mm cradle is exactly 78 mm, fits and wall thicknesses follow FDM rules, every dimension stays editable by chat, the mesh is watertight by construction, and the download can be G-code already sliced for your printer. And it is built to be used from a phone browser end to end.

Functional parts: brackets, mounts, enclosures, adapters, spacers, stands, organizers, replacement knobs and clips, planters, cookie cutters, gears and simple mechanisms. Organic sculptures and character figurines are not what SpeakCAD is built for.

Figurines, busts, character and action figures, organic sculptures and textured decor: SpeakCAD builds parametric CAD from dimensions, so for those shapes a mesh generator such as Meshy, Tripo or MakerWorld MakerLab is the better tool. It does not export STEP files for machining either; for that, use Zoo or Fusion 360. SpeakCAD is built for functional parts that have to fit something: brackets, mounts, enclosures, adapters, organizers and replacement parts.

Models default to a 220 x 220 mm bed but you can ask for any size. Complexity is limited by what compiles in your browser in a few seconds, which covers practically every functional part; a hand edit rebuilds the part in about a second on a current phone. Very high-polygon organic shapes are out of scope.

No. Credits never expire: unused plan credits stay on your account until you use them, even if you cancel. Your models stay saved and editable.

The first charge on a new subscription is refunded within 14 days. If a download is unusable because of a defect on our side (a corrupt or non-manifold file), we restore that download. See the refund policy for details.

Yes. No printer? SpeakCAD has a part printed in PLA or PETG and shipped by tracked delivery: designed in the editor or picked from the library or the marketplace, priced from a real slice before you pay (from $1.19 or €1.09 for a small part, plus tracked shipping with the import duties), up to 100 copies per order, to 40 countries in North America, Europe, Oceania and East Asia. In the editor, press Download, then Print it for me; on a library or marketplace page, Print it. Details on the 3D printing service page (/3d-printing-service).

It depends on the part: we slice it and price the grams of plastic, the printing hours, the print farm's setup, then tracked shipping with import duties at what it costs us, taxes included, before you pay. A small part like an AirTag holder is $1.19 plus $1.60 shipping in the United States (€1.09 plus €1.80 in the euro area); ten of them are $0.31 each plus one shipping, because the setup and the postage count once per order. No plan is needed to order a print.

Made to order, so it can't be returned; if we can't deliver it, or it arrives broken, the full price comes back as SpeakCAD credits. The number of credits, at the Pro plan's rate, is shown on the order form before you pay. Write to us in the chat on the site with your order number.

Until 30 October 2026, a Pro subscription ($14.99/mo) automatically puts you in a draw for a Bambu Lab A1 3D printer. One winner is picked at random by 31 October 2026 and the printer is shipped for free. Cancelling or refunding the subscription withdraws the entry. A free entry is also possible; the full conditions are on the giveaway page.

You do. Anything you generate with SpeakCAD is yours to print, share or sell, with no attribution required.

Yes. Open Duplicate an object in the app, photograph the part next to a ruler from the top and from the side with your phone, and say what it is. The AI reads the ruler to convert pixels to millimetres, models the part as a parametric program and lists the dimensions it used so you can check them. Type one measured size and the rest scales to it. Expect about ±0.5 to 1 mm from photos alone; a fix after a test print re-downloads free.

Downloads are STL or 3MF meshes. The model itself stays parametric inside SpeakCAD: every dimension remains editable in the viewer and by chat, and small fixes to a downloaded design re-download free. STEP or Fusion 360 files are not available: SpeakCAD's kernel is OpenSCAD, which has no B-rep export.

A catalogue of free, print-ready models designed by other SpeakCAD makers. Get one and it lands in your account as an editable model: adapt the dimensions, then download the STL or 3MF at no cost. Anyone who gets a model can grade how it printed, from 1 to 5 stars.

Yes. Open any model you designed, click Publish and, once approved, it goes live on speakcad.com/marketplace, free for everyone. Nothing is published unless you choose to. On an account that has paid for a plan or credits, publishing a model you have downloaded adds 10 credits to your balance the moment you submit it (taken back if the listing is not approved).

Yes. Your invitation link is on your plan page in the app. A friend who signs up from it gets 25 extra credits when they start a plan, and you receive credits the day their first payment goes through. The reward follows your own plan: 30 credits on Free, 30 on Maker, 100 on Pro, 200 on Unlimited. The credits add to your balance and never expire. If you would rather be paid in cash, the affiliate program pays 20% of every subscription payment from the people you bring, every month they stay.

No. Your prompts, uploads and models are only used to provide the service. The AI runs through a business API whose provider does not train on API data.