You have seen it beforeβ¦ π
This one is an M36 screw, 80mm long with an optimized thread. You might need to βbreak-inβ the nut a little, by turning the nut while pulling and pushing alternately in both directions. After that the nut turns nice and easy without much slack on the bolt! If the nut is still too tight, scale it to 100.5%, but only in X and Y.
Printed at 0.2mm. On my MK4S I had to print the nut in Structural settings and even then at only 70% speed to prevent the thread from curling because of high print speeds.
PLA is PRUSA Orange and ANYCUBIC classic green, which match really good.
The author marked this model as their own original creation.