TR8 M3 plastic nuts

I was needed a Nut to screw TR8 nut.
Original metall M3 nuts doesn't fit, so I designed a plastic.
Works well.
Printed in PETG abd ABS. Every kind of plastic should be good as vell, but may need some filing - depends on the shrinkage.
It uses 0.5 - 0.6 meters of filament.
It is better to make a threads with M3 tap.
3-4 perimeters. Infill 20% or more.

There are 2 versions;
Simple - for simple TR8, without a spring
Spring - for TR8 with spring
Each of these 2 nuts has 2 versions - cutted and not.
If you don't want to unmount Z screw - choose "*cut"