Arbors and accessories

Machining the arbours was simple enough, using the collet chuck in the lathe, so I didn't end up taking any photos of that. But some of the subtleties are shown below.

A test of the cross drilling process for insertion of the tapered pin into the centre arbor.

The set up used to ensure concentricity when cross drilling the centre arbor. Precise measurements are required here to ensure proper compression of the friction spring.

The cross drilling set up.

The cross drilled centre arbor.

Centring the depth adjuster for the anchor escapement.

Slotting the depth adjuster for the anchor escapement.

The finished depth adjuster for the anchor escapement.