M97 O-ring Piston
thingiverse
The internals of my Hanke M97 quickly became brittle & broke. For my first 3D printing/modeling project I thought to reproduce & improve the piston. If your internals are fine & are just printing the piston (not the shell) for the o-ring upgrade, it should be plug & play with no modifications. If you intend to print the shell also, you may need to modify your shell ejector port as mine broke, was super glued in place & I modeled everything after the fact. Printing as is should be fine but the piston shell I faced nozzle down to bed with supports. All that's needed is an o-ring, lubricant & possibly some sanding to create a nice seal. Just beware that an upgraded spring will cause extra tension & likely snap piston latch without reinforcement.
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