I suppose I should assume that the guys who wrote this stuff a year ago have all made their threading attachments work. Did anyone talk to Sherline about this? I ask because my new Sherline 17" 4400 showed up yesterday and is now secured to an MDF board attached to one of Harbor Fright's $20 folding workbenches. So I got out the additional gizmos I bought with it and when I got to the threading attachment - set it up and found that it slipped just like the ones reported above.
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It looks like the wisdom shared above is that the gears need lubrication and some experience - sort of run-in. This sounds pretty good. I must remember to spend some time on this before I get boxed in and have to produce some threads in a hurry.
I've been away from this stuff for a bit more than 50 years having gotten stuck in another profession, but now that I'm back to what I really like, I'm burdened to some extent by what I remember from the late '50s, or possibly mis-remembered.
I thought we cut threads on one face using the compound slide set at an angle which agreed with the geometry ot the threads we were cutting. The threads were cut in the direction of the chuck. We'd back off with the compund slide run the thing back bring it in some thoudsandths and do the next cut.
This obviously requires a compound slide. It looks as if this cannot be done with Sherline's compound slide unles you do the cutting on the back side ot the work where it would be hard to see what was going on.
Sherline offers a riser which would make it possible, but it doesn't look like the threading attachment could handle a head-stock sitting on a riser so this it out.
I realize that what I'm asking is probably nuts, but has anyone tried using the compound and cutting threads on the back?