Belt drive pulleys for the mini mill
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These are the 2 step pulleys that I cast in aluminium for a belt drive conversion on my mini mill. Its the Chinese clone of the Sieg X2 that is available in South Africa. It has the 28mm OD spindle with 4mm keyway as opposed to the 30mm OD spindle with 5mm keyway of the Sieg. I used a sewing machine belt, the MB 320. I've included a version with the 30mm ID for those who have that size in their machine. Full write up of the process at Instructables... https://www.instructables.com/Belt-Drive-Conversion-for-the-Mini-Mill/
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