EVA foam thickness for sound dampening

[Morsher]

Hi guys. Is it okay to use 5mm EVA foam between PCB and a plate in a hotswap build? I saw one guy used it for NK65 EE in his video and it looked and sounded good.
Source: 

 

[TrigrH]

20 minutes ago, Morsher said:

Hi guys. Is it okay to use 5mm EVA foam between PCB and a plate in a hotswap build? I saw one guy used it for NK65 EE in his video and it looked and sounded good.

It will vary based on what keyboard you use, for mine 2mm was plenty

[Morsher]

11 minutes ago, TrigrH said:

It will vary based on what keyboard you use, for mine 2mm was plenty

You mean case clearance? I saw an article that said there's 3.5 mm between PCB and a plate. Problem is you can't buy 4mm foam or 3.5 mm foam. 2, 3 or 5mm only.
Article: https://www.maketecheasier.com/modify-keyboard-case-plate-to-perfection/#:~:text=A large part of a,acting as an acoustic chamber.

[TrigrH]

2 minutes ago, Morsher said:

You mean case clearance? I saw an article that said there's 3.5 mm between PCB and a plate. Problem is you can't buy 4mm foam or 3.5 mm foam. 2, 3 or 5mm only.
Article: https://www.maketecheasier.com/modify-keyboard-case-plate-to-perfection/#:~:text=A large part of a,acting as an acoustic chamber.

in that case I would consider two sheets of 2mm, if its a plastic frame 5mm might work

[Morsher]

1 minute ago, TrigrH said:

in that case I would consider two sheets of 2mm, if its a plastic frame 5mm might work

Ye i'll be using a plastic case. So like for plastic case 5mm is fine?

[Morsher]

1 minute ago, James Evens said:

Normal approch is the take 2 2mm sheets.

 

Hmm... Haven't seen that anywhere. I don't really care if it's ugly i just don't know if it can stuck upon each other normally.

[Morsher]

2 minutes ago, James Evens said:

It is close enough (you want some compression anyway) and easy to buy.

Hmm... Compression you say. If it does require compression then i should take 5mm i suppose? Or it'll be too tight?

[Firewrath9]

foam sounds like shart in keyboards but if you must i would use neoprene.

[TrigrH]

3 hours ago, Morsher said:

Ye i'll be using a plastic case. So like for plastic case 5mm is fine?

Yes, that way you can adjust pressure using the screws, plastic is a lot more forgiving.