Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:2450613.
Based on djk4linux's work as discussed in the FlightTest Forums here: http://forum.flitetest.com/showthread.php?24251-Cutting-foam-sheets-with-a-needle
My work on this version starts at this post: http://forum.flitetest.com/showthread.php?24251-Cutting-foam-sheets-with-a-needle!&p=356850&viewfull=1#post356850
I'm using the cutter_body.stl version which is designed to work with hicwic's quick change mount. I've also included a hacked up cutter_body-525.stl which should mount to the new stock 525 style tool mount...however since I haven't upgraded my MPCNC yet I have not tested that particular mount. When I do upgrade my machine (or when I get bored) I'll draw up a nicer optimized mount for the 525...unless someone beats me to it :D
Introduction to this version: https://www.youtube.com/watch?v=nYEQ5p_Yi5k
Cutting a full sheet with this cutter: https://www.youtube.com/watch?v=eCKBj7OnG7o
Onshape project: https://cad.onshape.com/documents/0b010a7a70bd0183d800fa80/w/2427c16d54be94a0c0fb03df/e/6104b1396ce31afa164ac429
9/20/17 - Added "cutter_body - New-mount-52.stl" version with the distance between the motor mounting face and the needle guide stretched to 52mm to allow more motor options with dkj4linux's original "prop saver" mount style flywheel.