So I figured I’d do a little project, I need 500mm panels for. Home depot says they wont guarantee better than 1/8" accuracy for their cuts, so I figured I’d ask for 20" (508mm) which should allow plenty of leeway, so I can cut the 500mm on the CNC, and still bring home the panels in the car.
And they’re 20" – provided you measure at the correct place.
I checked at the panel saw when the sheet was put on. No debris or scraps under it, the panel was jn good contact with the rollers at the bottom… when I got home, stacked the panels against the wall, and noted that they didn’t align like I thought they should… each panel is at a different angle!
This one is nearly square, it’s only about 4mm out by the opposite side.
This one is nowhere even close. More than 15mm out at the other side of the 4’ run.
As far as I can tell, no 2 crosscuts are actually parallel. I had it cut to 5 pieces, and all 5 have a discrepancy measured at the top and bottom. The only 4 square corners are the panel’s original corners. A couple of pieces have opposite slants off square on each side.
I can still use this, and I will, but next time, I’ll spend the $10 extra to get cut panels from a different shop. I might need to change my width dimension from 500mm to 490, though.
This is the second time I’ve had off-square cuts from Home Despot. My LR3 table wings are off square, too.
I can only surmise because the cuts aren’t parallel that the rollers on the bottom are somehow loose and able to move. The sheet seemed to stay in contact with the rollers as it was being cut, but the results speak for themselves. Oh and the saw blade seems dull, lots of chipping on the melamine…
Good thing I didn’t need square corners for a table saw!