Focuser for Canon 100-400 mm Lens

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Focuser for Canon 100-400 mm Lens and Other Large Diameter Lenses for Astrophotography Camera Use. The inner diameter of the lens clamp is precisely measured at 93.7 mm. To print this focuser, use a high-quality PETG or ABS filament with a solid 100% infill. Printing without supports will provide the best results. Some parts may require rotation in the slicer software for optimal placement on the print bed; refer to the Simplify3D snapshot above for guidance. For better results, consider printing the clamp separately and using a raft specifically designed for that part. The stepper motor used is the 28BYJ-48 model, combined with a 64:1 gear ratio for precise movement control. Detailed documentation and software for the electronic components can be found at https://sourceforge.net/projects/arduinoascomfocuserpro2diy.