What it is
DIY $10 punch vs $30-60 commercial. 3D printed + lens.
Version history
Straight from the project’s own card data — what each version added.
Research phase.
Built with steel tip.
Files on the site
What broke, and what I’d change
Not written yet. This is the part only I can write — what actually went wrong, and what I’d do differently. It lives in builds/reflections/optical-center-punch.md (see _TEMPLATE.md); as soon as that file has words in it, this section fills in on the next build.
Everything else on this page — the spec, the version history, the file counts — is generated from the project’s own build notes and files, so nothing here is guesswork.
Build spec
The project’s own build notes, rendered. Open the raw .md ↗
⚠️ This project’s spec file is a stub — only its title, category and status were ever recorded, so there is no build detail to show. Nothing has been filled in to pad it out.
Show the spec
Optical Center Punch
Category: Hardware & Electronics · Status: Done
DIY $10 punch vs $30-60 commercial. 3D printed + lens.
Stack / Tools: 3D Printed, Precision, Optical, Tool
Build path:
- V1 — Research phase.
- V2 — Built with steel tip.
Location: ~/Desktop/optical-punch-body.stl
DIY optical center punch: 3D-printed body + lens + steel tip for marking drill centers. ~$10 vs $30–60 commercial.