R8 Drawbar Upgrade For PM25 Mill

The drawbar on the Precision Matthews PM25 mill is difficult to torque properly with its unusual 8mm square head. In this video we replace the standard drawbar with a new one with a 3/4″ hex head, similar to those used on Bridgeport mills. This work was done to ensure proper torquing of the Tormach TTS collet and thus ensure tool retention while performing heavy machining.

Cutting speeds reference guide (Little Machine shop)

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