G'day John et al.
We now know the blood(y) line of this Three Jaw Chick; she of sired
by Imprecise, out of True.
My wife is a loverly lady (chick) but occasionally she has one jaw
too many, a three jaw chick must be a fearsome beast.
Seriously, Roy's advice is good, there may be the opportunity for a
bit of gentle lapping but certainly no room for the village
blacksmith. We gets what we pay for. Three jaw chucks were only ever
seen as quick and easy for general work; precision requires either
collets or a four jaw chuck with setting up. The most repeatable
means of centering is to work between centres
One good turn deserves another.
Regards,
Ian
--- In 7x12minilathe@..., "born4something" <ajs@...>
wrote:
Hi Roy,
That's a rather valid (and perceptive) point. I'd never realised
the
compromises necessary in the spiral scroll design concept.
