BS0 chinesium semi-universal dividing head problem

The original B&S version used a large center thread to attached the Chuck. Try unscrewing it. Lefty loosy.
 
I ended up making a "bushing" i turned that was ever so slightly smaller than the threads of the head chuck, set down inside and "tapped" with a dead blow that got it loose. then I cleaned up the mating diameter of the plate surface on the lathe to match.

will post a picture of the "bushing" or mandrel or whatever to call it in case interesting to others.
 
looking forward to your pictures bbaley. In part because I'm not picturing what your solution was & also, I just like to see pics of what others are doing ;-)
 
BROCKWOOD said:
looking forward to your pictures bbaley. In part because I'm not picturing what your solution was & also, I just like to see pics of what others are doing ;-)
Click to expand...

brockwood, ok here they are (or what I actually documented anyway)

Here you can see that there is a "step" where the diameter of the chuck bore is smaller than the bore of the back plate;
https://photos.google.com/photo/AF1QipOekCS2PedxZwUEnF5KsB3GNd8x14fTz4oIPfKN

I took a really thick washer and turned it to fit the back plate threads and the bore of the chuck - really only because there is room down there to slide around - I imagine anything that would fit down there might have worked.
https://photos.google.com/search/_tra_/photo/AF1QipOnCn_0emK3x1T9bTq2ajVe5iG0nlJQdZiH7qua

I tap-tap-tappy-tapped with a piece of wooden closet dowel/rod that was about the right size.
I could tell by the screws down there there was a backplate on the chuck - and looking at my other cheap-o chuck it didn't look very robust, so I was a bit afraid I'd break it being super high quality Chinesium cast crud.

once I got it loose, I put it in the lathe and trimmed it up a tiny bit - it really just needed to be kissed on the OD of the backplate "step" because it wasn't perfectly round and pretty rough. I could test it in the lathe chuck by carefully holding the (other) chuck up to it each light pass until it fit but no wobble or excessive play. i tested this when I first took it out by tapping the backplate when it was in the back of the chuck to listen for any play/rattle and it sounded and felt solid but I could still put them together and remove easily enough.

After that - which was the purpose of all of this, I drilled three new holes in an extra face plate I had - to mount to the dividing head backplate so I could mill some circular cutouts and recesses in some large rectangular stock - and also use the same setup to drill and tap some holes for some pieces that fir in the same holes/recesses.

https://photos.google.com/search/_tra_/photo/AF1QipM-SuMf1KKGxRKI-wxom3FEoiCWV1uYIWrrRfc9
https://photos.google.com/search/_tra_/photo/AF1QipPiljACrCMcuyUM0QpTsAY0PPLmhc1joi1kVd_4
https://photos.google.com/search/_tra_/photo/AF1QipOuA4At5NPTc5ngdQhG3gxxzioHP5gGHwbSUx0N

and then mounted it to the dividing head
https://photos.google.com/search/_tra_/photo/AF1QipPWYaReQWp1J2YIxVS6f5RTSaW7Dzkc3AT829RW

I then learned what an extremely trying and patience testing operation trying to tram this monstrosity is going to be every time I use it.
I'll have to learn the tricks and tips, if there are any for that. what a PITA. Not to mention I need to find someone with a bigger lathe to true of the face plate which is definitely not flat enough....

https://photos.google.com/search/_tra_/photo/AF1QipO4X1rrUaPNjOICYUr73gpjOXPdBFefftMfTk7p

The purpose of all of this was a bunch of stepped holes in some rectangular pieces;
https://photos.google.com/search/_tra_/photo/AF1QipNh95sTU5oygHNP2i6pyqU6rHt6PbnsznVCdSW_

And that exercise is teaching me it ain't easy getting the front and back side of a stepped hole to match up, especially with matching parts through those holes that have drilled/tapped holes that can bind it up when put together and it's only off 0.002"... I expect the order of operations has a lot to do with how well all of that turns out...
 
All those links & I can't open any of them :-(

Nice write up just the same!
 
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