Note: This model has been updated. See: https://www.printables.com/model/1508496-adapter_125_eyepiece_to_t2-recapitulation-and-upda
1,25" eyepiece to T2 (M42x0.75) thread adapter.
The T2 thread (M42x0.75) should be printed with a layer height of 0.07mm. The rest of the part can be printed with 0.2mm. See configuration.
Recommended material PETG
It can be printed without support material.
With a quality filament (PETG prusament) and a good maintenance of the printer, you should not have any problem to print the fine pitch thread.
You will have to insert two M4 DIN934 nuts, before going over the 4 mm holes with a drill.
The author marked this model as their own original creation.