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Homebuilt 6" F15 Refractor and Mount

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Step 4: The RA Shaft

Picture of The RA Shaft
My large pillow block bearings were sold to me as 3"ID however when they arrived they were closer to 2-5/8"ID. I was able to find 2-5/8" aluminum cylinder and had it pressed into a 6" dia 1" thick disk. Pressing the shaft in is a very strong and stiff junction but is a job for a metal shop with a press, My local machine shop charged me $20.
 
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