any hints to jam chucking 35 inch long piece??? used sandpaper on headstock jam chuck, but still was struggling. scared to tighten tailstock end too tight,
worried about messing up bearings
worried about messing up bearings
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jam chuck long pieces
- Thread starter Charlie Knighton
- Start date
Jam Chucking long piece
How about using a steady rest to support the work. You could also insert a length of threaded rod held in a 4 jaw chuck. The rod needs to have a bearing block on the insertion end. It would then provide a surface to pinch the work between the the block bearing surface and a live center. Good luck! Rich
How about using a steady rest to support the work. You could also insert a length of threaded rod held in a 4 jaw chuck. The rod needs to have a bearing block on the insertion end. It would then provide a surface to pinch the work between the the block bearing surface and a live center. Good luck! Rich
thanks
i could and should have use a steady rest, but was trying small bowl at headstock end with jam chuck (which was done), the other end was the base and i was turning the tendon off to make flat for it to stand on
not sure i could use the rod, all i used was the live center, and turned tendon off, but it was slow going
looking for a better way
i could and should have use a steady rest, but was trying small bowl at headstock end with jam chuck (which was done), the other end was the base and i was turning the tendon off to make flat for it to stand on
not sure i could use the rod, all i used was the live center, and turned tendon off, but it was slow going
looking for a better way
It depends on the shape of the peice, but would a dounut chuck work.
Nigel
Nigel
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A "small bowl,"
35 inches long,
with a flat foot,
so that it can stand upright,
without falling over.
Please post a picture of this marvel. We need an amazement fix.
Joe
35 inches long,
with a flat foot,
so that it can stand upright,
without falling over.
Please post a picture of this marvel. We need an amazement fix.
Joe
Thanks for the clarification. The preceding descriptions led me to imagine a l-o-n-g ice cream cone, balanced on its tiny tip. Phew! I'll sleep a little better tonight.
If you're not turning away very much more, the bearings on your mayo monster can probably tolerate the compression needed for stability, especially at low speed. But the foot will be best turned last of all, so that it's centered, and square to, the line through an estimated center of gravity. That might involve a third axis. Even then, some fine tuning, free-hand against a disk or belt sander, should home in on success. I suggest you allow enough material to sneak up on it.
All the best,
Joe
If you're not turning away very much more, the bearings on your mayo monster can probably tolerate the compression needed for stability, especially at low speed. But the foot will be best turned last of all, so that it's centered, and square to, the line through an estimated center of gravity. That might involve a third axis. Even then, some fine tuning, free-hand against a disk or belt sander, should home in on success. I suggest you allow enough material to sneak up on it.
All the best,
Joe
axis
i had not thought to add more than 2 axis, but i acqired a bit of this wood on a visit to small sawmill on a cold day last winter, i may just try, seems in richmond they had a couple pieces in black with small bowls on the sides of 4 x 4, also that wall hanging with the cuts, maybe a combination of things, i did see Barabara Dill demo once upon a time
opps, almost forgot Nick Agar, he's a little farther up the curve
i had not thought to add more than 2 axis, but i acqired a bit of this wood on a visit to small sawmill on a cold day last winter, i may just try, seems in richmond they had a couple pieces in black with small bowls on the sides of 4 x 4, also that wall hanging with the cuts, maybe a combination of things, i did see Barabara Dill demo once upon a time
opps, almost forgot Nick Agar, he's a little farther up the curve
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