Solar filter holder 72 & 77mm

thingiverse

This is a print-in-place filter holder designed to simplify making filters using materials like Baader Astro Solar film. It's engineered to screw into 72mm lens mounts. The design doesn't include threading with the expectation that initial uses will create a thread on the filter holder. You'll require substantial support as both plates begin printing off the bed. I will employ interface support. So far, this print remains untested. I plan to test it in the next few days. Update: 12/6/17 I've modified the model to replace the hinge with a simple slot and groove. This change allows the part to be printed in two pieces, reducing the need for support and high-accuracy printing. Update: 13/6/17 I've added a version designed for 77mm filter threads. This one has slightly more clearance for the thread and includes smooth fillets on the inside edge to minimize pressure points on the solar filter. I've also given the clamps a little extra space (0.1mm) as they were quite tight initially. If you find the clamps too tight or too loose, simply scale up or down the clamps slightly in your slicer.