ACME File Master Machine The machine is capable of continuous running at the high speed. Various models of stitching machines are available like Angular-Straight-Bottom etc. You can use flat wire 12 x 25 gauge in all the machines and round wire 21 gauge in straight machine by changing some parts. The design of the machine is universal and world famous. Very easy in operation and also for servicing & repairing. All the spares are always available all around the world.