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Thorlabs.com - Optical Component Threading Adapters with SM1 (1.035"-40) Threads
Optical Component Threading Adapters with SM1 (1.035"-40) Threads
THOR SM1 Threads in Fusion360 - Austin's Imaging Blog
Externally threaded 1” lens tube dust caps. SM1 thread. ~$0.11 in material vs. ~$15 from optics supplier. (0.1 mm layer resolution, 100% infill) : r/functionalprint