I got some 3/4" clips from Amazon Basics today and made some holddowns per your great idea and info. I’m not all that impressed with these clips, however, I think the clip is a thinner material than a brand name clip (about 9mil thick). They’ll work, I just need more of them probably.
I cut a dozen and decided right away that the angle grinder was a bit too ‘dramatic’ for this task so switched to my Foredom tool with a cutoff blade and that worked like a champ! Safe and only took a couple of seconds per clip (it took more time swapping clips in the vise than cutting them)!
While waiting on my Pro to be delivered I’ve been gathering other items for the system. I did get the silicone splash guards, lasers for cross hairs and purchased 1/2"x1/2"x1/2" N48 Neodymium Magnets. I plan to use the magnets on the slats to hold thinner material down.
The magnet with probably get damaged if it’s in the plasma path. I do use magnets in the water table attached to the bottom of the slats near the water drain. They will pull out a lot of the suspended filings before they go down the drain. I keep them in small plastic bags so they’re easy to clean… whenever I get around to cleaning the table
I use magnets (with baggies, of course) mounted just below both of the grinding wheels on the grinder I use for my turning tools. When they get too ‘fuzzy’, I bring the bracket to my bin, pull off the ‘baggy’ and all the filings fall neatly into the bin. I generally don’t like metal ‘particles’ floating around in my woodshop that also serves as an electronic shop.