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Bowl Turning

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Forum topic by oakdust posted 406 days ago 280 views 0 times favorited 4 replies Add to Favorites Watch
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oakdust

158 posts in 709 days


406 days ago

I tried to turn my first bowl todat out of a blank of spalted malple. I mae it round and cut a tenon on what was to be the bottom of the bowl. I put the tenon in the 3 jaw chuck and tightened it down, I mean really tight. So I starteed to hollow out the inside and the blank flew out of the chuck, rolled accross the floor and came to rest under the work bench. Needles to say it really messed up the blank. So what did I do wrong? Is there a better way to mount the blank to hollow it out?

-- Bob, Rockford IL, http://www.woodandwax.net

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cmaeda

192 posts in 447 days


406 days ago

Haha… that’s bowl… bowel is something else…

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Eric

784 posts in 677 days


406 days ago

LOL!

Yeah, seriously, oakdust, you need to edit this post QUICK! or you’ll never get a serious response to your question.

-- Eric at http://adventuresinwoodworking.com

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NY_Rocking_Chairs

435 posts in 490 days


406 days ago

Can you turn bowels? I thought they were kind of long and squigly, not at all straight…

How deep was the tenon? I usually aim for about 1/4” to 3/8” deep.

You should angle the tenon wall so that the outside edge (surface of the bowl) is smaller than the inside (3/8” into the bowl). This creates a lip for the chuck to grab onto. If you look at your chuck you should see that the teeth on that are angled too. So cutting the same angle into your tenon will allow the two to mate harmoniously.

Hope this helps.

-- Rich, WNY, www.nyrockingchairs.com

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mike

46 posts in 1203 days


405 days ago

Bob

A couple of turning points for chuck use. As Rich indicated you need to match the angle of the chuck jaws
to the tenon. also a common rookie mistake is to have the tenon bottom out on the base of the chuck. The mechanical advantage of a chuck lies in matching the jaw angle for maximum contact and that the base of the bowl blank rest firmly on the top of the jaws.

Also this is not as mechanically sound as a face plate to a gently touch without too much side pressure and sharp gouges will increase the probability of success.

PS Rich I love your chairs.

Hope this helps
Mike

-- Mike, Maryland, www.thewoodenquill.com

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