On Sunday 17 January 2016 17:23:40 andy pugh wrote:

> On 17 January 2016 at 21:58, Gene Heskett <[email protected]> wrote:
> > o200 SUB ( subroutine to enlarge selected holes )
> > G91 (relative distance mode)
> > G91.1 (incremental distance for arcs)
> > G1 X0.00300
> > G3 X0.00300 Y-0.00010 I-0.00300 J-0.00000
> > G90 (back to absolute for the rest of the code, till the next o200
> > CALL. o200 ENDSUB
> >
> > Simple enough, and the data is straight out of Big Johns newest arc
> > code generator. Only problem is it doesn't draw the circle to a
> > 0-360 degree arc, you have to end it at 359.9999.  For that small a
> > hole, who cares.
>
> You might find it better to code a full circle by hand
>
> G91 G91.1
> G1 X#<radius>
> G3 I -#<radius>
> G90
>
> Will do a full circle.
>
And of course because Andy wrote it, it Just Works(TM).

Thank you Andy.  I put that in the drill file, and drilled everything 
with a .03125 mill, and if that hole needed to be stretched,

#<_bigger_hole> = 0.004, .005 or .006
o200 CALL

while the mill was buried in the hole.

> G3 I-#<radius> P6 will run round the circle 6 times
>
> G3 I-#<radius> Z-6 P6 will spiral down through your 6" PCD at 1" per
> rev. (It is more plausible in metric)

Chuckle.  We speak either because it goes with the electronics, but as an 
old Iowa Farm kid, more comfortable in inches etc.

I've got 3 of them ready for parts, and the first one has been stuffed 
and soldered, and checked with a DVM, but its test voltage is just 
enough the schottky's are turning on before I get a stable reading.  
Continuity is good, so unless I static damaged the mosfet output switch, 
which was shipped w/o any static foam or small wire wrapped around its 
legs, it should work.

20:00 local, so I'll setup the function generator and the scope for live 
tests tomorrow.

Thanks Andy.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

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