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General Mach Discussion / Re: Bridgeport Knee Mill Conversion?
« on: September 02, 2016, 03:27:22 AM »
Was always planning on doing the knee of the Beaver NC5 for use with tool offsets. Ray Livingston did that if I recall, should work well and as the Beaver already had a motor on the knee it wouldnt have been a huge job to swap.
Not sure why you think the knee would be less accurate, as long as the gib was snuggled up then it would be just as good as the quill, in fact lots of people choose to do the knee rather than the quill, just it requires a much bigger motor and is often a lot slower.
Maybe having a scale on the knee and cranking it manually and using a fixture offset for things such as drills would work, that way you could position manually with accuracy and then change the work offset to allow for the change in the height.
Hood
Not sure why you think the knee would be less accurate, as long as the gib was snuggled up then it would be just as good as the quill, in fact lots of people choose to do the knee rather than the quill, just it requires a much bigger motor and is often a lot slower.
Maybe having a scale on the knee and cranking it manually and using a fixture offset for things such as drills would work, that way you could position manually with accuracy and then change the work offset to allow for the change in the height.
Hood