Question: i want to add one more hard drive to my pc case and this case can only fit 2 hard drives, if remove the brackets, i can add a new one

do i need some barrier for my hard drives? and what kind of material? wood, acrlylic, plastic?

Answer:

i want to add one more hard drive to my pc case and this case can only fit 2 hard drives, if remove the brackets, i can add a new one

do i need some barrier for my hard drives? and what kind of material? wood, acrlylic, plastic?

I have done what I think you are talking about and I used cardboard. It worked great for years.

Edit: I rubberbanded them together with cardboard in between.