MGN12H Arm Base

This is a drop-in replacement for the arm block in the Minimalist Heat Insert Press model allowing you to use an MGN12H carriage block, instead of the LML12B carriage block listed in the original bill of materials. This arm block also has the same tooth profile as the original arm block, so you will be able to use the same GT2 belt. You will need about 280mm of GT2 belt.