While building the Z-axis, I needed a couple of collars;

General CNC CNC Routers
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While building the Z-axis, I needed a couple of collars; so I made them out of acetal; but of course, I made the ACME tap first:
https://nelsontrujillo.com/blog/2015/02/01/diy-acme-tap/
https://nelsontrujillo.com/blog/2015/02/01/diy-acme-tap

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Nice trick. Here’s another approach you might find interesting:

http://bbs.homeshopmachinist.net/threads/43645-Making-Acetal-leadscrew-nuts-the-easy-way?highlight=acetal

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@Len_Sherman thank you for the link. I found that not long ago; but after I already completed the tap and the nuts. However, that approach will lead to less backslash I think