NATO-3M adapter for gas masks

thingiverse

I created this adapter to let me utilize 3M respirator filters with my Swedish army forces M90 gas mask, known as "Forsheda F2". The adapter will fit any NATO threaded gas mask and enables you to use standard off-the-shelf 3M filters. Feel free to post your prints! EDIT: I've also included a dummy plug that can be used instead of a filter, similar to the original dust cover but with some holes in it. (Print upside-down) Printer Settings: - Printer: Geeetech G2s Pro - Rafts: No - Supports: No - Resolution: Approximately 0.2mm - Infill: High Post-Printing: Finishing touches: Round the lower edge of the NATO threads, if necessary. Design Process: Design aspects: This adapter is my original drawing, designed to be robust and extra printer-friendly with no bridges or steep slopes. It has just the right amount of clearance and should work fine unmodified with most printers. Custom Section: CAD files: I also posted the Rhino .3dm file allowing you to use the adapter threads on any other project, like filtering air from your 3D printer.