M42x0.75 dual-sided threaded dust cap, male/female

M42x0.75 dual-sided threaded dust cap, with both male and female side, for astronomy.

These threaded dust caps are useful for astronomy cameras, telescopes and adapters. This thread size is often called "T-thread" or "T2-thread". Don't confuse this with M42x1.0 thread, which is used for Pentax or Micro-Four-Thirds (MFT) cameras.

I print these dust caps out of PLA+ and have found that the threads print nicer in PLA+ vs PETG and that sometimes the threads are so fine that they don't fit as well with PETG. YMMV. Try enlarging/reducing the X/Y axes by 0.5% if they are too loose or tight.

This dust cap is a dual-sided version with both a male and female side.  I had to use supports, so the female side has a rough surface.

I'm uploading many sizes that I've used on my various telescopes and cameras.