One of my students expressed a wish to learn more about hollowing....not for closed forms, but for more open, deep vessels. He was having difficulty with his shielded hook, hollowing tool (I'm not surprised) so brought it along on his training day; and decided not to bother taking it back home!
So here it is, but what is it! I'm wondering if it's a cheap far eastern attempt at making an affordable tool for a western market.
The 18mm shaft is hollow and is fixed within the handle
The hook cutter is fixed on the end of a thinner shaft which telescopes in and out of the outer shaft.
The brass knurled knob rotates by about one full turn and draws the hook tool in and out by no more than a few millimetres
The shield over the hook has been formed out of the top edge of the outer shaft, and is adjusted by three screws.
Screws 1 and 3 are threaded into the shield and their tips just rest against/press against the inner shaft, so adjusting these two screws bends the shield up or down
Screw 2 passes through a clearance screw in the shield, down through a clearance slot in the shaft of the hook cutter and then down even further into a threaded hole in the underside of the outer shaft.
It's all rather crude!
Anyone know anything about this!
Les