Bahtinov Mask Top Left

thingiverse

This Thing was custom-made using the Customizer on thingiverse.com! Instructions are as follows: Using the options below: split layer width: .2 no splits based on distance: on mask height above: .5" height of slot hole in center ring (inner_height): 0" height for masking top outer portion of ring (mask_height): 1.9" outer diameter for focusing rings: 10.17" orientations for all additional hole(s): up aperture to correct optical problems at focus of a camera lens (fa): 4"