Internal o-ring insertion tool

Version 2 Update: I tweaked the geometry to reduce the probability of breaking off the tip of the plug while extracting. Should be much sturdier and easier to use.

I had to make a minor change to the code from http://www.thingiverse.com/thing:34027 so I have now uploaded the modified file as well.

I haven't done much testing with other sizes beyond my immediate need. Please leave comments if you find any issues with it scaling to other sizes.

This is a tool I made based on the idea I