Build your own tool!

Download for 3D printers 

If you have access to a 3D printer we have made the original tool design available for free with a Creative Commons License on printables.com – download available here.  There is also information on where you can purchase the additional parts including the low cost plastic ruler. This is tricky to find in some Countries but community members have created remixes of the files to be compatible with rulers available in other Countries.

The phone App

Use the same App from the App/Play store in exactly the same way, find links on our App page

You are welcome! If you like the tool, please leave comments on the printables site or give us a 5 star Trust Pilot review!