I bought one of these 4 months ago and have been using it every time I put on the scroll chuck or faceplate.
But I think maybe it is the wrong size or not a good idea for my lathe. There is no step in the shaft behind the threaded area and the washer does not center. It is always as shown when the chuck tightens.
What I think is happening is that the washers is allowing the chuck to sit against the spindle in a slightly angled fashion. I know there is about a .016” lash in the threads, which is necessary.
I never really payed it much attention until recently when I began making some pen blanks with the Celtic knot inlay. I just could not get the hole drilled in the center. It started out OK but ended up as much as a sixteenth off at the other end. Tried all kinds of jigs, fixtures, techniques and still had limited success.
BTW, I use a set of fixtures in the scroll chuck to hold the blank and drill with a drill chuck in the tail stock.
My cheap drill press is of no use for this operation.
Then during one of many tool changes I considered the spindle washer and how it does not center on the shaft.
I left it off and proceeded to drill 3 blanks 2” long and the most variance from end to end was .009”.
I am in the process of making 2 more Celtic knot blanks to confirm this by drilling and turning them down.
What I also did was make a washer from some 10 mil lexan that is used to make decals. It is a very consistent .009” and I cut the center hole small enough that I actually had to screw it onto the threaded part to get it behind the threads. That one sits where it is supposed to.
I’d be interested in anyones thoughts on this and if anyone else has one of these washers that fits better on 1” 8-TPI spindle.
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