Re: [CAD_CAM_EDM_DRO] lead screw or rack and pinion ?

In a message dated 25-Jun-02 22:31:53 Central Daylight Time,
datac@... writes:

> So, Nice job ! I was curious what that base was that you used though.....

Chris: There is a "sheet-metal bending firm" here I have used for decades.
First contact was way back ('75?)when I needed some professionally-finished
black-anodized panels with precise 1.00" square holes on a specified grid
(for a pipe-organ with a new style of stop-controls; I did pipe-organs in a
former life). Then I discovered they do "anything sheet-metal" (well, except
AC ducting, etc.!). They have done machine-bases, application-specific
junction-boxes, aluminum "electronic cabinets", headstock-covers, etc. to go
on the machines I do. This lathe has a base which consists of a brake-formed
shell which is ONE sheet of 0.175" mild steel sheet, with 2.5" sides folded
down. Then I used 2x2x3/16" angle-iron I cut and welded on intervals under
that, and to the edges, stiffening it considerably. Oh, and 3/4" angle
welded inside to the "rims" with swaged-in ¼-20 inserts for bolt-down. I
also welded the "corners" where the edges "came together" when formed. Once
all the "nasty" was done (welding, grinding, etc.), I milled the bottom "rim"
true all around on a BP mill, and then bead-blasted it all around. Then
primer and finally almond paint. Looks like a new fridge.

Any questions, just holler! Jan Rowland


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