Parameterized Lens Filter Wrench

A simple parameterized Lens Filter Wrench. Most common sizes have been rendered as STL files, but if not the spreadsheet parameters can be easily edited in FreeCad 0.17. The handle length is also parameterized, as is the thickness. I created short handled versions to fit in my camera bag more easily.

The handles are well reinforced where they meet the hoop, so even if you squeeze very hard they should not break.

I also post-processed these by coating the inside surface the GB "Liquid Electrical Tape" forming a thin durable and grippy rubber surface. It only takes a light squeeze to get a good grip with this.