Re: [CAD_CAM_EDM_DRO] Re: Universal gantry idea - here is something I came up...

In a message dated 7/14/2004 1:37:43 PM Central Standard Time, rick@...
writes:
Of course all of this can be shimmed out, but what a pain.
Rick: On the monster 5'x12' X-Y router I did in '86, before I affixed the
"table surface" to the (precision-woodworking hardwood-) frame, I glued wood
shims about 7 mm thick to the frame-rails at all points the router-axis would
cover, and then, with a 2" dia. carbide bit, I "milled off"a bit of the top
surface of the shims with the router fixed at a "down position" that would
JUST-touch the lowest point, taking off whatever necessary of the highest points. An
old machinist observed this operations in photos, and said I was "facing off a
face-plate in a lathe, in effect". Exactly. Thus, when the Melamine top was
affixed, the locus of the top plane of that was exactly parallel to the locus
of the tip of the router-bit.

No "universal motor" router for that! I used a Perske 3.5 hp. 400 Hz 3-Ø
router motor with a rotary power-converter (which cost MORE than the
router-motor!).


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