Your first 3D model in about 15 minutes: a step-by-step walkthrough
From a blank chat to an STL in the slicer, step by step on a phone: what to type, what to check, what to change, and where the 10 to 15 minutes actually go.
The part
A stand for the phone in your hand, because you can measure it without getting up. Mine is 78 mm wide with the case on; yours will differ. Everything below was done on the phone in Safari. The times are typical, not a record: the one real wait is the first render, and most of the rest is you looking and deciding.
Step 1: measure and type (a minute or two)
Width of the phone with its case (78 mm). Where the charging cable goes (bottom, centred). How steep you like it (about 60 degrees). That is the whole spec.
Most of that time is measuring.
Step 2: the render (a minute or two)
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. Then the model appears on a virtual print bed with its outside dimensions and volume underneath. A short summary lists what the AI decided for you: an 80 mm cradle (78 plus a millimetre each side), 3 mm walls, a 90 mm deep base for stability, the cable slot 12 mm wide and running through the base. If you had not mentioned the lip, it would have added one anyway.
Step 3: look, then change two things (two to four minutes)
Orbit with a finger. The lip looks low: the phone would slide out with a thick case. Type:
Seconds later the lip is 5 mm and the edges have a 2 mm fillet. The previous version shows as a faint ghost, so you can see that only the lip and the edges moved and the slot did not.
Then the cable: the plug is chunkier than you thought. Tap the slot and the panel shows the number that shapes it; type 14. The model recompiles in the browser, with no AI involved and no credits spent.
This is the part that people do not expect. There is no undo-the-sketch, no feature tree. You say what is wrong, or type the number, and it is fixed, and the fix does not disturb the rest.
Step 4: check the numbers (two to three minutes)
Tap the front face and the readout shows its height; tap the slot and it shows 14 mm. The dimensions panel lists every number the model is built from (width, angle, slot, wall, lip) in case you want to type one directly instead of asking. Total footprint is 80 x 92 x 96 mm, which fits any bed.
Step 5: download (a minute or two)
Download as 3MF (it carries the millimetre unit and the name) or STL. On a phone the file lands in Files or Downloads. From there it goes wherever your slicer lives: AirDrop or a shared folder to the computer, or straight to the slicer app if you use one. The phone to slicer guide covers each route.
What it spent: the first version was one AI request (4 credits on a plan, whichever model answered) and the chat edit was one of its 3 free small changes, the slot typed in the viewer was free, and the download is included in your plan (Maker, the smallest plan, is $7.99 a month for 50 credits). If the printed stand is a shade tight for the case, type a wider cradle in the viewer (free) or ask for it (one quick edit, 1 credit), and download the corrected file again.
Step 6: slicer (a minute or two)
Drop the file on the bed, default profile, no supports needed because the AI kept the overhangs under 45 degrees and put the flat base down. Print time is about an hour and a half at 0.2 mm.
Where the time goes
| Step | Typical time |
|---|---|
| Measuring and typing the prompt | 1 to 2 min |
| First render | 1 to 2 min |
| Two edits (one by chat, one typed in the viewer) | 2 to 4 min |
| Checking dimensions | 2 to 3 min |
| Download and transfer | 1 to 2 min |
| Slicer | 1 to 2 min |
| Total | About 10 to 15 min |
The same stand in a desktop CAD program takes a competent user about 25 minutes, and a beginner an evening if they finish at all. The full set of timings is in another article.
Your turn
Pick something within arm's reach that needs a holder, a stand, a hook or a lid. Measure it. Describe it. If the first render is wrong, say what is wrong. The clock starts now.
Prompts to start from
Open one in the builder, change the numbers to yours, and the model renders in your browser, usually within a minute or two. Keep adjusting in the chat before you print.A phone stand for a 78 mm wide phone at 60 degrees, with a 12 mm cable slot underneath and a 5 mm lip at the front, all edges rounded.
A stand for a 250 x 175 mm tablet at 70 degrees with a 15 mm cable slot and a 6 mm lip, 3 mm walls, 120 mm deep base.
Questions
A typical functional part, with a couple of edits and a dimension check, is a downloaded file in about 10 to 15 minutes. 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.
Yes. The walkthrough was done in Safari on an iPhone. The editor, the 3D viewer and the download all work in the mobile browser with nothing to install.
Say what is wrong in a sentence: taller lip, wider slot, rounder edges. The change lands in seconds and the previous version shows as a ghost so you can see exactly what moved. Each small chat edit is one AI request (2 credits); typing a number in the viewer is free.