OpenPedal Pedal Harp Base
Why This Was Created
The base is the foundation of the OpenPedal system — literally. I needed a structure to mount all the pedal mechanisms internally while keeping the external shape historically accurate. This design is based closely on an original harp base from the 1700s, with a slight height increase (about 2 cm) to accommodate the deeper motion range required for a double-action pedal system and supporting electronics.
This version of the base uses microswitches to detect pedal position and is still a work in progress — but it’s functional and a great starting point for prototyping.
Included Files
OpenPedal_harp_base_V1.stl— full 3D model of the current base design
Note: This is the first functional version of the base. Updates and revised versions will be posted here as the design evolves.
Fabrication Notes
3D Printing
Tested with both ABS and PLA+. PLA+ offers surprising durability in a non-structural testing context, while ABS is preferred for strength and dimensional stability.
A full parts list for this version is currently in progress and will be added soon.
Licensing & Ethos
This part — like the rest of the OpenPedal project — is released under the Creative Commons Attribution–NonCommercial 4.0 International (CC BY-NC 4.0) license.
https://creativecommons.org/licenses/by-nc/4.0/
✅ You are free to:
Use and modify the files
Share them non-commercially
Remix and adapt the part for your own harp project
(And if you do — please share it with us! We'd love to feature your work.)
🚫 You may not:
Sell these files or derivatives as commercial products
Manufacture this part for resale without written permission
This project is open-source to encourage collaboration and accessibility, not to enable third-party resale. Please respect the spirit of the license — and support those who support the project.
Need Adjustments?
If you need modifications or dimensional changes for your specific harp build, feel free to reach out via the Contact Us page. I (Matthew Finlay) will provide updates free of charge — all I ask is that we’re allowed to share your improvements to help others build their dreams.
