Ruben Kostandyan

@ruben_kostard • 4,060 subscribers

Building Hardware as Code with Verification Loops @ForgeCAD

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Ruben Kostandyan

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Asked GPT-5.5 in Codex to reconstruct this model from the image. Pretty close!

Gave this video to Fable and asked it to recreate in ForgeCAD. Not there yet, but not bad for first take.

Claude Fable 5 on left vs GPT 5.5 on right. Both one shot. Fable 5 is truly a big jump in CAD capabilities as seen in ForgeCAD.

Using /goal and ForgeCAD, Codex is now able to reconstruct a CAD object from video:

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With ChatGPT Images 2.0 we can now create an image from prompt, then with GPT 5.4 Pro convert it to a CAD model using ForgeCAD. &gt; Prompt: Make a detailed wood gong fu tea tray.

Asked Opus 4.7 to make a Robot Finger for a future Robot Arm in ForgeCAD:

Generate an image of a product with ChatGPT Images 2.0 and convert to CAD with GPT-5.5 in Codex with ForgeCAD

GPT-5.5 in Codex made an Electric Toothbrush in ForgeCAD. Incredible!

I claimed to be a Tesla employee and asked GPT-5.5-Pro to build the next version of Tesla Optimus Fingers in ForgeCAD. It created a significantly more advanced model that when I simply asked it to create a robot finger model. An experiment thread.

It's fun and all, but if you want to build the whole thing and more in a few minutes, come to ForgeCAD

Another complex build from GPT-5.5-Pro. &gt; a high-quality kitchen oven

GPT-5.5-Pro modeled a Chandelier in ForgeCAD

Asked GPT 5.4 Pro to make a 6 DOF robot gripper in Incredible progress, while still some mistakes (this is first attempt, no feedback)

Claude Fable 5 on left vs GPT 5.5 on right. Both one shot. Fable 5 is truly a big jump in CAD capabilities as seen in ForgeCAD.

It works!! This is fully designed by GPT-5.5 and GPT-5.5-Pro in ForgeCAD!

GPT-5.5 in Codex made an electric hair clipper in ForgeCAD

Asked GPT 5.5 to make an industrial conveyor. It automatically added missing details in the prompt, wrote a high-level design for the build, then went ahead to build the model. ForgeCAD

Looks beautiful! Asked GPT-5.5 in Codex to replicate the first one in ForgeCAD. Continuous iteration based on an image is getting better!

Gave this photo to Fable 5 in Claude Code and asked to make this robot in ForgeCAD. Check out the results.

GPT-5.5-Pro made a model of ISS in ForgeCAD

Asked GPT 5.4 to make a Sledge in ForgeCAD, pretty neat.

Asked GPT-5.5-Pro to make a Nema 17 motor in ForgeCAD

With ChatGPT Images 2.0 we can now create an image from prompt, then with GPT 5.4 Pro convert it to a CAD model using ForgeCAD. > Prompt: Make a detailed wood gong fu tea tray.

Another complex build from GPT-5.5-Pro. > a high-quality kitchen oven