Re: [CAD_CAM_EDM_DRO] Re: MachMotion vs. DIY for a Bridgeport

Hi Danny,
I think you've got that a bit wrong.... The G540 does not contain 4 G203's.
It contains 4 G250's which are rated at 60% of the voltage and half the
current compared to a G203 (50V/3.5A vs 80V/7A), that makes quite a bit of
difference when talking about Bridgeport sized machines.

I'm pretty sure that a G540 and the 200oz-in NEMA23 motors you referred to
are too small for a Bridgeport without going to ridiculous reduction rations
between the motor and screw. Most Bridgeport conversions I've seen runs on
600-1200oz-in step motors.

/Henrik.



-----Original message-----

The G540 is the equivalent of 4 individual G203's in one box, plus it
ends in a prewired parallel port connector instead of a bunch of wire
quick connectors. Also has isolated switches for controlling a motor
relay which the G203 does not. Either one will work great electrically,
pretty much the same driver. The G540 is just tops for practicality and
not especially expensive. Far easier to mount and connect.

My computer came was found on the curb during heavy trash day. I even
looked it up and found an ad for that model that was like $129 I think.
Wow... that's cheapo. But only a few years old. Well I found its power
supply was bad, which conveniently explained why it was discarded. I
found the RAM and processor from my last computer were actually better
than what was in there so I swapped them out. Also it had on-board
video and would require an older AGP card for external video, again, I
had a junk pile from my previous machines which obliged on that front.
Also found on heavy trash day was an LCD monitor which kept going out,
requiring much slapping, but I found the cold solder joint on the board
causing that. But now, hey, free computer! Except for like $50 for the
power supply.

Danny