Roundish Back Spacer

I wanted a roundish Back Spacer which could stand the weight of voron 2.4 with a roundish Spool Holder.

I designed to fit them for 5mm gap for the back panel 3mm + 1mm foam tape x 2.

I could adjust the model for 4mm gap if anyone requested, or they could just add 1mm foam tape to the model to fill the gap. 

I added the stp.file just in case someone want to adjust the model by themself.