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by the way that's a very nice setup ou are making!
i made my mill with what was lying around at my job (yes I am SO lucky :-)
at this moment another er20 chck is on it's way to belgium for spindle version2
have a look here for balancing.
have fun building!
Thanks :-) it's a 20 million gigawatt Rc car motor (hobby king spec...about $75)
with ER20 spindle from china
and two very expensive ball bearings (when you NOT buy them from this guy ) http://www.abtbearings.cn/
you will need these SKF 7004CD/P4ADGA. try to find them cheaper :-)
How clever! It took me a moment to work out this was probably a ducted fan drive motor used in a spindle.
I am currently constructing a Momuscnc unit. Though initial work will be with a laminate router, I plan to make/buy a proper spindle for detail work, like pcb routing.
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