Find an old Printer enclosure. It is a lid opening box and it has thick
foam on the inside area. The issue you will come in with is air. Cooling
a working computer in an box isn't easy. Not silent.

Perhaps in stead of asking for what you did - you might tell us why or for
what reason.

Might be just a different computer to solve the problem. Might be exotic
water cooled...

Martin

Christopher Glaeser wrote:
Anyone have plans or photos of an acoustic enclosure for a desktop computer?

Best,
Christopher