that is very interesting that so little coolant volume is used. i had visions of coolant dripping off the table everywhere, but it doesn't sound like that is the case at all. i may yet again look into setting up for coolant, and try aluminum at some point.
an idea i had previously was a plywood table painted with epoxy floor paint, but the HDPE sounds far better. i was thinking of mounting aluminum T-track in the spoilboard, below the surface, and using the T-track as coolant drains. but with so little coolant being used, i can envision just a curb at the sides, and back, and let it drain off the front into a channel, and catch container.
see, my new shop floor is wood (Advantec 3/4" T&G), and i would rather not get much coolant on it.
Oh! Speaking of noise, WEAR EAR PROTECTION! We had an earplug dispenser for the operator and a pair of monkey ears for guests.
already planned on it.
there isn't much noise while i am making sure everything is connected and working right during the build, though there are some times when testing something that i forget, and only realize afterward that something may have been too loud.
We bought three of those 5' tall free standing office partitions, the ones with fabric.
that's not a bad idea, as those panels are usually sound-deadening as well. they are expensive, even used, in my area as they are in such short supply, but they are easy to make.
at present, my biggest noise maker is my air-compressor. it is an oil-less pump, and really grates on the nerves. particularly when i forget it is on, and it starts to re-charge. good thing the ceiling in the current shed is very low. that way i have less distance to fall when i peal off the ceiling.
i kinda wish i had a nearby CNC guru, as i have an odd issue... well two actually.
firstly the sensor that detects if the ATC spindle is unlocked is not triggering. traced the wire out, and tried a different input, but nothing. i even verified, after the pin move, that the signal is not present directly from the ATC spindle. my guess on the solution is it has to do with the second issue.
the second issue, is that my ATC spindle needs up to 95psi to unlock the tool-holder from it, on paper. yet i need to feed it 115psi for it to be able to actually unlock, and it is slow doing so. not sure if my gauge is wrong on the regulator, or what is going on. could have something to do with the spindle internals being so cold, too. no full-time heat in this shed, so the machine only warms up when i go out and turn the heat on.
it would make sense if the pneumatic piston in the spindle needed some air-tool oil, but the instructions say specifically dry air, free of oil and water. though i have thought of a drop or two of oil, and just work the piston a few times to work in the oil, and expel the rest.
...oh dear... i seem to have written a novel again.