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Bracket and wall mount generator
Brackets and mounts from the numbers that matter: the screws, the spacing, the load
A bracket is a few numbers: what it holds, how far from the wall, which screws and how far apart. SpeakCAD turns them into a part you can print. A flat mounting plate or adapter plate you make by hand from the plate shape: holes sized for M2 to M8 screws with a countersink or a counterbore, copied in a row, a grid or a circle, slots for adjustment, free, download included. An L-bracket, a shelf bracket, a pipe clamp or a wall mount for a device you describe to the AI, which adds the fillets and the thickness that carry the load. STL, 3MF or G-code sliced for your printer, on a phone or a computer.
How it works
From the screw pattern to a bracket on the wall
Measure the hole spacing and the screws you have before anything else: they are the numbers a printed bracket most often gets wrong.2
Drill the screw holes
Tap Hole, pick the screw size (M2 to M8 clearance presets), choose a countersink for flat heads or a counterbore for socket heads, and type the centre in millimetres from the edges. Duplicate puts the copies in a row, a grid or a circle, so a 75 mm VESA square is one hole and one grid. Cut makes a slot where the bracket needs adjustment.3
Check the render
A hand edit rebuilds in your browser in a few seconds; with the AI, 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. Tap two holes with Measure to read their spacing, and check the plate's thickness behind each screw head.4
Download and print
A plate shaped by hand downloads free as STL or 3MF; a bracket with AI work in it spends 4 credits. G-code comes sliced with the official OrcaSlicer profile of one of 380+ printers.What one bracket costs
| Step | Cost |
|---|---|
| Live demo: 3 AI edits of a real part, no account | Free |
| The plate shape, its sizes typed in the viewer, screw holes with heads, copies, slots and rounded corners by hand | Free, and the STL or 3MF downloads free |
| Describing the bracket (one AI request) | 2 credits |
| Each change by chat | 2 credits |
| Typing a new number in the dimensions panel, undo | Free |
| STL or 3MF download of a part with AI work in it | 4 credits; small fixes after it re-download free |
| G-code sliced for your printer | +5 credits per slice without Pro or Unlimited |
| Maker | $7.99 a month: 60 credits a month, about 6 parts with a couple of edits each; cancel anytime |
| Pro | $14.99 a month: 200 credits a month, sliced G-code included |
| Unlimited | $39.99 a month: unlimited requests and downloads |
Bracket descriptions that render right the first time
What it holds, where it mounts, the screws, the spacing. Each opens in the editor with the text already typed; measure your own hardware before printing.“A wall bracket that holds a 32 mm pipe 20 mm from the wall, a clip opening of 28 mm, two countersunk holes for 4 mm wood screws 40 mm apart, 4 mm walls, rounded edges.”
Open this prompt in the editor“An L-bracket 40 x 40 mm, 30 mm wide and 4 mm thick, with a 6 mm fillet and a triangular gusset in the inside corner, two M4 countersunk holes on each leg, printed on its side.”
Open this prompt in the editor“An under-desk mount for a 210 x 120 x 35 mm power strip: two hooks that cradle it, 3 mm walls, two countersunk holes for 4 mm wood screws on each hook, 2 mm clearance around the strip.”
Open this prompt in the editor“A wall mount for a 160 mm long router 30 mm thick with two keyhole slots 100 mm apart on its back: two pegs 4 mm across and 6 mm long, 100 mm apart, on a plate 140 x 40 x 5 mm with three countersunk screw holes.”
Open this prompt in the editorTwo ways to make the bracket
- By hand, free. Start from the plate shape and type its size and thickness in the viewer. Drill the screw holes with Hole (M2 to M8 presets, countersink or counterbore), copy them with Duplicate in a row, a grid or a circle, cut adjustment slots with Cut, add a locating peg with Add, round the corners. An adapter plate between two hole patterns, a mounting plate for a board or a cover plate is done this way, and a plate shaped only by hand downloads free as STL or 3MF from a free account. The hole guide shows the steps.
- With the AI. Describe what it holds and where it mounts: an L-bracket with a gusset, a shelf bracket, a pipe or rod clamp, a hook, a mount shaped to a device. The AI writes it as a parametric model, adds the fillet in the inside corner and thickens the base under the screws.
Hole patterns and screws to start from
Measure your own hardware: clones and revisions move holes.
| Pattern or screw | Numbers (mm) | Ask for |
|---|---|---|
| VESA 75 / VESA 100 | 75 x 75 / 100 x 100 square, M4 screws | 4.5 mm holes on the square |
| M3 screw, flat head | 3.4 mm hole, 6.6 mm countersink | the M3 preset with Countersink |
| M3 screw, socket head | 3.4 mm hole, 6.5 x 3.4 mm counterbore | the M3 preset with Counterbore |
| M4 / M5 screw | 4.5 / 5.5 mm clearance hole | the M4 / M5 preset |
| 2020 aluminium extrusion | 20 mm profile, 6 mm slot, M5 T-nuts | 5.5 mm holes on a 20 mm pitch |
| 35 mm DIN rail | 35 mm rail, 7.5 mm deep | a DIN clip, by AI |
The countersink and counterbore guide has the M2 to M8 table, and Duplicate shows a row, a grid and a bolt circle.
Strength: what makes a printed bracket hold
- Print it so the load runs along the layers. An L-bracket printed on its side, both legs flat on the bed, is much stronger than one printed standing up, where the load pulls the layers apart.
- A fillet and a gusset in the inside corner, and 4 or more perimeters in the slicer; ask the AI for "heavy duty" and it thickens the part and adds ribs.
- Thicker under the screw heads, and a countersink only where the plate is thick enough to keep material under it.
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. For a clamp or a clip, the test slice is the part that grips, printed in a few minutes before the whole bracket.
Ready-made, or something else?
- Common brackets and mounts are in the library: they open in a free account and resize in the viewer.
- The how-to, with what to put in the description: the brackets and mounts use case.
- A holder shaped to one object (a spray can, a tool, a remote): the holder generator. A case for a circuit board: the enclosure generator.
What it costs
A plate made by hand from the plate shape downloads free. A bracket with AI work in it uses credits. Start with Maker: 60 credits a month for $7.99, 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), turning it around in 3D and changing its numbers in the viewer are free, and so is downloading a part you shaped by hand; each AI request (a new part or a chat edit) spends 2 credits, whichever model answers (up to 10 on a very large model); a download of a part with AI work in it spends 4 credits (+5 for G-code sliced for your printer without Pro or Unlimited); small fixes after a download re-download free.
Questions
For a standard bracket in a standard size, a template with sliders or a library model is enough. For a bracket built around your screws, your hole spacing and what it holds, SpeakCAD works from the numbers you give: a flat plate with screw holes by hand, free, or any bracket, clamp or mount described to the AI. It downloads STL, 3MF or G-code sliced for 380+ printers, on a phone or a computer.
Yes: describe the legs, the width, the thickness and the screw holes on each leg, and ask for a fillet or a gusset in the inside corner (one AI request, 2 credits). Print it on its side so the load runs along the layers.
Yes, by hand. Start from the plate, type its size and thickness, drill one hole of each pattern with its screw preset and head, and Duplicate each into a grid with the pattern's spacing. Put the countersinks of one pattern on the other face. A plate shaped only by hand downloads free.
Yes. The Hole tool has M2 to M8 clearance presets, a tap toggle for the hole a screw cuts its own thread in, and a Countersink (flat head) or Counterbore (socket head) sized by the preset. The AI uses the same standard sizes and can add pockets for heat-set inserts.
Strong enough for most household loads when it is printed in the right direction, with 4 or more perimeters, a fillet or gusset in the inside corner and enough material under the screws. PETG or ASA hold better than PLA in a warm place or outdoors. For anything overhead or safety-critical, use a metal bracket.
Yes. SpeakCAD runs in Safari on iPhone and iPad and in Chrome on Android: type the sizes, tap where the holes go, and the STL, 3MF or G-code lands in Files or Downloads.
A plate shaped by hand from the plate shape, its download included, is free with a free account. With the AI, describing the bracket is one request (2 credits), each change by chat another, and a download 4 credits; typing a number in the viewer spends nothing. A new free account also gets its first AI request and that part's first change on us (not offered in every country); downloading the part spends 4 credits, like any AI work. G-code sliced for your printer is included in Pro and Unlimited and spends 5 extra credits per slice otherwise.
Read more
Brackets and mountsWhat to put in the description: the load, the screws, the offsets.Ready-made brackets in the libraryMounts, hooks and clamps that open in a free account and resize in the viewer.Put a hole at an exact distance from the edgeTap the face, pick the screw, type the distances.Duplicate a hole patternA row, a grid or a bolt circle from one hole.Countersink or counterbore a screw holeScrew heads flush with the face, M2 to M8.Holder generatorA holder shaped to one object, on a wall, a desk or in a drawer.