Vacuum adapter for Stepcraft HF500

This is a 3d printable replacement for the Stepcraft vacuum adapter for HF500 spindle.

I was having clogging issues with the original one wen cutting MDF so I redesigned it to make the internal tubes wider, and keep the magnetic hold and the rest of parts from the original.
You need 8 cylinder magnets 3mm diameter x 2mm height that need to be inserted with a print pause.

I started with 4 magnets and kept increasing the number in several iterations until I had a reliable hold.

[UPDATE 1