What is Reddit's opinion of BLACK NEOPRENE PLAIN SPONGE/FOAM RUBBER SHEET 300MM X 300MM X 3MM THICK by Camthorne?

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ah right yeah, I can see how it would be straight forward for the plate, but maybe the case foam would be a pain with the hotswap sockets, might be what I end up doing though. Something like this would be appropriate, right?

Good that you haven’t had any pcb damage from the sorbothane.$26 seems reasonable, but I think the shipping to the UK on McMaster would be fairly hefty, as the sorbothane on Amazon also comes from the US. The dampener I linked does look like it may press down enough for the pcb components, but I looked at some neoprene foam anyway and found this https://www.amazon.co.uk/BLACK-NEOPRENE-PLAIN-SPONGE-RUBBER/dp/B00I2SNTLY/ref=sr_1_5?dchild=1&keywords=neoprene+foam&qid=1591370564&sr=8-5 It’s more than big enough and very cheap also.

I was looking through how people dampen their boards, most of them said sorbothane, but Butyl rubber seemed used quite a bit aswell, it’s super heavy and used on cars to dampen them so I’m sure that would work, but I don’t know if I could get a piece thin enough so it doesn’t touch the pcb components as I’m not sure it would let the pcb components squish into it.

The planer definitely wasn’t going to work, didn’t really think about it though. Some stand-off measurements would be great thanks, I can then figure out if I would even need to sand the brass down from 4mm as I could possible just fill the space up between the brass and pcb with some sort of dampener.

edit: was just looking on eBay and I can get a ⅛” piece of sorbothane sent from Australia for around £25 inc. shipping. But it’s only 100mm 100mm so...

Thanks!

So something like this from Amazon is sufficient?