This 3/8"-10TPI ACME nut prints in two sections which screw together.
The top section is a micrometer screw, moving (1/11)-(1/10) of an inch relative to the leadscrew per turn. This lets you adjust the fit from 'good' to 'perfect'.
The openscad requires tsmthread4
Name Last modified Size DescriptionApache Server at burningsmell.org Port 80
Parent Directory - flange-3-8-10-adj.scad 2019-01-30 19:33 1.7K Adjustable-backlash 3/8-10 ACME nut flange-3-8-10-adj.png 2019-01-30 19:30 24K Adjustable-backlash 3/8-10 ACME nut 3-8-10-flange-diagram.jpg 2019-02-01 19:19 27K flange-3-8-10-adj2.jpg 2019-01-30 19:16 215K Adjustable-backlash 3/8-10 ACME nut flange-3-8-10-adj.jpg 2019-01-30 19:15 274K Adjustable-backlash 3/8-10 ACME nut flange-3-8-10-adj.stl 2019-01-30 19:33 2.1M Adjustable-backlash 3/8-10 ACME nut