In this thread:
http://www.bt3central.com/forum/topi...TOPIC_ID=18096
Mudder mentioned the Longworth chuck and included some links. Wanting to make some bowls, that seemed like a very good idea, so I made one:
As you can see I deviated from the plan and made 6 instead of 4 jaws, I figured that would give me a bit more holding power as I am still a beginner and prone to catches...
3/4" ply for the back, 1/4" ply for the front. I used t-track bolts I had around, but they are a tad short and will eventually be replaced. The rubber feet, nuts and the faceplate all came from Rockler. All in all this was still a lot cheaper than jumbo jaws for my chuck, and has the added benefit that i do not need to retool the chuck all the time!
The bowl on the chuck actually was not made with it, it is on there just for demonstration... Some Oak from a neighbor who graciously let me have quite a bit for practicing. I used a few coats of Arm-R-Seal Oil & Poly finish. Don't really care for it, it seems to take forever to really cure and the surface is just too 'applied' looking. I wanted to try tung oil on it, but when I read that it tends to 'sweat' on oak I thought this finish was a better choice. I'll try tung oil next time...
And here the first bowls done with it (well, actually more platters with high sides, as my wife requested these as holders for pillar candles. The first one is about 5 1/2" diameter canary wood:
And this one is brazilian cherry, approximately 7 1/2" in diameter:
Both bowls were finished with Hut Lite.
Gerd
http://www.bt3central.com/forum/topi...TOPIC_ID=18096
Mudder mentioned the Longworth chuck and included some links. Wanting to make some bowls, that seemed like a very good idea, so I made one:
As you can see I deviated from the plan and made 6 instead of 4 jaws, I figured that would give me a bit more holding power as I am still a beginner and prone to catches...
3/4" ply for the back, 1/4" ply for the front. I used t-track bolts I had around, but they are a tad short and will eventually be replaced. The rubber feet, nuts and the faceplate all came from Rockler. All in all this was still a lot cheaper than jumbo jaws for my chuck, and has the added benefit that i do not need to retool the chuck all the time!
The bowl on the chuck actually was not made with it, it is on there just for demonstration... Some Oak from a neighbor who graciously let me have quite a bit for practicing. I used a few coats of Arm-R-Seal Oil & Poly finish. Don't really care for it, it seems to take forever to really cure and the surface is just too 'applied' looking. I wanted to try tung oil on it, but when I read that it tends to 'sweat' on oak I thought this finish was a better choice. I'll try tung oil next time...
And here the first bowls done with it (well, actually more platters with high sides, as my wife requested these as holders for pillar candles. The first one is about 5 1/2" diameter canary wood:
And this one is brazilian cherry, approximately 7 1/2" in diameter:
Both bowls were finished with Hut Lite.
Gerd
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