Lathe / Multifix A 40 position QCTP

I acquired a Chinese knockoff of the Swiss Multifix (size A) quick change tool post from my good friend Emma, along with a couple of 16mm tool holders and a blank tool holder suitable for making custom tools with.

This QCTP is truly exceptional compared to the tiny Fortuna/Dickson style that I got shortly after the lathe and really was undersized. The Multifix A is perhaps the largest toolpost one can comfortably use with this machine, and while most of the toolholders are for 16mm (5/8 in) tools, the largest tools one can hold is 14mm (a bit over 1/2 in).

This QCTP with 12mm carbide insert tooling is a fantastic match for this machine.

A new stud was machined from a short sample of 4140 Emma sent with the QCTP, it was pre-hardened and my Fortuna struggled to hold the tools rigidly breaking several insert edges. The stud uses a very fine pitch, M12x1, as I felt M10 was too coarse for the short thread engagement in the T-nut.

A nut with a tall column was also machined, the tall column is for clamping tools such as an indicator, or possibly a phone / small video camera for filming close to the cutter.