Titivating A CNC Plasma Table

The Craftmans Shop > New from Old

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awemawson:
I pressed ahead and mounted the controls on the cabinet door this morning. I debated long and hard (with myself!) whether to put them on the side where wiring would be much easier, or whether to put them on the door, where the ergonomics are much better, but the wiring will be a pain (hinged door, so cables need to flex, and be supported across a door that I don't want to drill holes in)

It's always a bit of a worry drilling that first hole in things like this - spacing has to be EXACT so that the engraved label would fit, and all sit nice and square on the door. I cheated, and using the same file that I created the engraving and cutout holes from, I made a drilling template with 3 mm holes where the 22 mm cutouts would be. Drilled the first 3 mm hole and bolted it with a nut and bolt, squared the panel up with a set square, clamped it, drilled a second hole, another nut and bolt, then drilled the remaining four 3 mm holes. This done, I opened them up with a 'step drill' to 22 mm for the controls. Step drills are superb for this sort of operation, and the final hole is remarkably concentric with the pilot.

vintageandclassicrepairs:
Hi Andrew,

--- Quote ---so thanks for the prompt
--- End quote ---
You are more than welcome
Maybe some adhesive backed slotted trunking and or spiral wrap and some sticky back cable tie thingys
across to the hinge side of the door ?
Neat job on the switch mountings :clap:
I have a few Greenlee hole punches that leave a nice clean edge, since my "real job" days
(like this)
http://www.ebay.co.uk/itm/Greenlee-Knockout-Punch-and-Die-Set-1-2-CONDUIT-7-8-I-D-PAT-1817223-/302163983305?hash=item465a607bc9:g:quoAAOSwiDFYNlJa

Happy New Year
John

awemawson:
Thanks John.

In the end I used Tywrap sticky pads across the cabinet door. Scrupulous cleaning with IPA first as I've had bad experiences with these things falling off in the past. I used to have problems with printed labels curling off until it dawned on me that many painted surfaces have been buffed with silicone containing polishes, and the thorough wipe down with IPA has cured that problem. Hopefully it'll do the same for the sticky pads :med:

The wiring is now mostly completed, just awaiting the arrival of a relay for the E-STOP circuit to drop the power to the stepper drivers, but E-Stop into MACH3 is up and running, as is separate switching for the controller and PC along with the relevant indicator lamps.

Still need to sort out the extractor fan duct, and cut a 12" diameter hole in the right place in the welding shop wall for the exhaust and make a cowl for it. Also need to sort out the driving of the fan relay from MACH3 - the plan is to bring it on when cutting first starts, and turn off 10 seconds after cutting ceases.

awemawson:
Still waiting for the E-Stop relay, but I went ahead and finished off the door cable form.

RobWilson:
Very tidy wiring job Andrew. :thumbup:

Rob.

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