Hi Guys,

I am trying to design a resizable diameter/radius circle for the filter making machine and I need ideas on how/what can I design to make a precise filter mesh. Please find the machine that I am trying to improve. The circle mould will be designed in aluminum and it should be resizeable circle and the aim of that size changing is to be able to make different diametered industrial filters





Please find simplified design below.

Can you guys please give me ideas how would I be able to design something is changing its diameter easily and precisely?

Thanks for your help in advance!!