We bought a multi fix style tool post after debating between those and an Aloris style version. Even the Dorian quad style QCTP was under review. However, they’re pricy!

Used, the multifix with tooling was the most affordable option. The size B is perfect for our Mori Seiki MS 850/1050.

With a claimed repeatability of 0.0001″ it’s hard to beat!

We’ll show you the teardown here!

First things first… we had to machine a toolpost post compound mount?!? (Brain fart prevented me from remembering exact terminology for the actual post and base that allows the QCTP to mount to the conpoibd of the lathe.

For the size B we used a 1.25″ diameter cold roll steel rod and bar for the components. The ID of the multi fix was at 1.25″! All we needed to then do was to turn one end down to fit through the top ring of the multi fix and thread of too. We chose a 1″x8tpi thread since the ID of that top ring is 1″! Imagine our luck

We’ll post dimensions of our post in this thread once we finish it up…

Here we are turning the ring step and thread.

We have a Buck Set-Tru 6 jaw chuck coming in for the Mori but for now we’ll continue to use the 4-jaw and get practice dialing in workpieces to a reasonable runout.

We put the t-slot base in the chuck and dialed it in for threading. After that we took inventory and anticipated the end result!

This is the QCTP stem.

Then threaded into the t-slot base.

Note the two holes are for the indexing slot and pin register that’s in the compound. One hole was an overshoot. We used a letter D bit but bit wobbled larger and oversized the 1/4″ pin. Oops!

So then we went one letter less and then were finally able to use the undersize 1/4″ reamer. Once the 0.2490″ reamer was reamed, the pin was pressed in.

After a bit of softening up the corners, we mounted the Multifix to the Mori Seiki compound.

We’ve used Aloris, KDK, Dorian, import QCTPs of the standard variety (I.e. single tool holder style) and while they all work fine weather they’re of the post or wedge style, nothing can beat the repeatability-minded design of the Original Multifix Suisse QCTP. Come on folks… remove tool, rotate by x degrees, kiss edge to chamfer, remove tool, return to original position, and BAM! Back to “zero”.

Now that’s amazing!