Before I start drilling holes in my spindle head

Mill
1

Pretty simple question -

I’ve been relying on existing non-used holes in my 770M to mount two MQL/MIST fog buster arms. Works OK but position is not ideal.

  1. Any info or perhaps CAD for the casting so I can avoid a serious mistake?
  2. Suggested places to mount the blocks for the arms for the fog busters?

I can see some obvious places that I should avoid drilling into the head casting, but would like a better idea of what’s on the other side. Holes are going to be small and not drilled deep (of course) then tapped.

Currently I don’t have an ATC or flood. I’ll take a good look at where and how they attach before I choose final locations. That said, it is likely to be a while if ever before I add either of those. So my current location choices will be based more on my experiences with sub-optimal current mount locations.

Thanks.

2

I have the same setup you do only on an 1100mx
why not replace the crappy magnet that comes with fog busters
thats what I did - rare earth from Mcmaster - they a bitch to even move, let alone get off
I have a dual setup also - one one each side of the head

Ed

3

Oh yeah, the mag base that’s standard is a bit of a joke.
I’ve got the multi-swing arm with rod holders that have holes to bolt them right on, that’s what I did with my bench top mill.

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4

Does your spindle have a tapped hole in the collar?

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I think it’s usually on the back. I don’t think it does anything. Like 95% sure.

5

I used super strong round magnets to hold the arms. Works really good for me! Any flat portion of the head can be used based on what the work piece requires.

6

:rotating_light: Do not use the spindle hole that is a direct path to allow contaminants into your bearings.