Customizable Center Dot Creator

thingiverse

I think there's now a 3-prong tool which should work much better with any scope like this as well as the 4-prong one. This is a tool for creating custom guides to aid in collimating telescope mirrors using center dotting. You'll need to know the mirror diameter and the center dot diameter to use it, which should work seamlessly with Thingiverse's customizer. Next, you'll need to generate the locator, which shows the location of the center dot. Optionally, you can also generate what I call the placer, a simple cylinder that you can put the center dot on and use for alignment purposes. (OpenSCAD values locator and placer = 1/on / 0/off) Important parameters include: Mirror diameter in millimeters Center dot diameter in millimeters Center dot hole diameter in millimeters Additional features inspired by this thing: https://www.thingiverse.com/thing:2556543 allow you to generate cutouts to save material with arm cutout in millimeters of cut length, currently 1/2 the width. Close distance is used to make locators that have a circular profile so they touch at multiple points. Only use this if you're quite sure about the mirror diameter.