Welcome to Openframe.cc
Goal in one line: build a reliable, rideable bike frame using bamboo veneer tubes joined by 3D-printed PA12-CF lugs — and document the whole process step by step. This is not a polished final product — it’s a maker’s adventure in progress. Here you’ll find design choices, CAD models, print settings, mistakes, and fixes. Everything that works (and fails) gets logged here.
Start here
- Vision — why bamboo + printed lugs, what modularity and repairability mean, and what “open” looks like in this project.
→ Vision - Devlog — chronological build log with prints, tuning, parts, and iterations.
→ Latest posts - Materials & Methods — PA12-CF, Moso bamboo veneer tubes, annealing, test pieces, durability notes.
→ (post coming soon)
What I’m building (quick outline)
- Frame system: bamboo veneer tubes (25/30/40 mm) + custom lugs for BB, head tube, seat cluster, dropouts.
- CAD: Autodesk Inventor; parametric design + export workflows.
- Printing: hardened 0.6 mm nozzle, 350 °C, heated bed & chamber; Scarf Seams + cooling fine-tuning for PA12-CF.
- Targets: stiffness, alignment, serviceability, and a fully rideable first prototype.
Latest highlights
- Cooling tweaks + Scarf Seams improved layer consistency and reduced seam visibility on PA12-CF.
- Iterating the seat lug and dropout geometry; moving toward production-ready print settings.
Latest posts
- Day 23 - Getting closer — 2025-10-03
- Day 22 - First printed lugs are ready — 2025-10-02
- Day 21 A bit downscaling and finishing the first model — 2025-10-01
- Day 20 – more CAD — 2025-09-27
- Day 19 – CAD — 2025-09-25
Follow along
For now: just watch the journey as a bamboo + 3D-printed frame takes shape step by step. Updates will drop here as the adventure continues.