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14 x 14 mm not quite right?

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Eszett:
I made a switch plate with 14 x 14 mm cutouts. I thought this is standard. But it turned out that switches don't fit in because they have these bumps here https://i.imgur.com/BnaXPny.png If i sand these bumps off the switches fit in quite well. not too tight, not too loose. What did I miss there? Is 14 x 14.5mm the cutout I should order, rather?

if I try to jam them in anyway the amount of force I have to apply is sick, maybe the hot swap sockets add up to that. Anyway it doesn't feel healthy. I guess I have to order 14 x 14.5 cutouts next.

suicidal_orange:
Those little bumps are supposed to clip under the plate to stop the switch falling out so they might require a bit of pressure but not too much, 14mm is the correct hole size.

Where did you order from and have you accurately measured the holes?  Could be the wrong allowance for kerf (cutter thickness) meaning the holes are smaller than you specified.

Eszett:
I don't have precision calipers right here yet, maybe tomorrow. But AFAIK the cutouts are exactly 14x14, since it's a FR4 plate and cuts are pretty darn exact. However, I already plan to order new plates, with little 5mm x 1mm salients in the spot where the bumps would take hold. That should nullify the bumps, while keeping the support for the switches still intact.

Rob27shred:

--- Quote from: Eszett on Sat, 25 June 2022, 12:50:54 ---I don't have precision calipers right here yet, maybe tomorrow. But AFAIK the cutouts are exactly 14x14, since it's a FR4 plate and cuts are pretty darn exact. However, I already plan to order new plates, with little 5mm x 1mm salients in the spot where the bumps would take hold. That should nullify the bumps, while keeping the support for the switches still intact.

--- End quote ---

Yep that's the way to go, plates need to have that little cutout in the thickness of the plate to accommodate the bumps that lock the switches in AFAIK. Without them the switches will want to push themselves back out & feel like they're a little too big for the cutout IME.

fohat.digs:

--- Quote from: suicidal_orange on Sat, 25 June 2022, 12:05:40 ---
Could be the wrong allowance for kerf (cutter thickness)


--- End quote ---

I have been stung by this conundrum so many times in my life. 14mm to the outside of the blade is not the same as 14mm to the inside.

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