Blackout filter for dark frame 1.25"

This simple blank filter screws into your 1.25" filter wheel and blocks the light from entering the camera allowing for dark frames to be taken without having to install the lid on the the telescope. I have 3D printed this part from black ABS and sanded the camera side so as to prevent reflections. The blank filter also has a slot so you can use a coin to screw it in or out.

Note: This part has a very fine pitch thread, not the best for FDM 3d printing although it can be done. I suspect this part is best suited for resin printing. However, I did test it and it did work using FDM, just that the thread was very tight