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lathe chuck question

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Forum topic by bobasaurus posted 04-25-2011 05:01 AM 796 views 0 times favorited 4 replies Add to Favorites Watch
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bobasaurus

1259 posts in 1839 days


04-25-2011 05:01 AM

I want to buy a chuck for my old delta lathe. The Teknatool Supernova 2 is on sale at woodcraft, and it seems a pretty good buy. It apparently comes with jaws that fit a dovetail profile cut on bowl bottoms and the like. This is fine, but will these jaws will also hold straight (non-dovetail) tenons? It would be nice to use this for other round stock without having to make the dovetail shape.

The PSI Barracuda also seems like a good alternative. The price difference is pretty much negligible, though the PSI comes with a few more sets of jaws.

I’ll probably also pick up some flat jaws for finishing bowl bottoms.

What do you think I should buy, fellow lumberjocks? Sorry if this has been answered before.

-- Allen, Colorado


4 replies so far

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poopiekat

3630 posts in 2389 days


#1 posted 04-25-2011 08:44 PM

A few of us turners here prefer to glue on a sacrificial circle-shaped piece to the end, for the chuck to grab onto. The prevailing mindset behind it is that it’s safer to squeeze the chuck jaws down onto something, rather than expand into a recessed opening. This is due to the compressive strength of wood exceeding it’s ability to withstand outward pressure. I have the Supernova 2 also, and though I have no others to compare it to, I like it a lot! It’s popular enough that if I want other jaw options they are readily available. I have used the expanding feature without dovetailing the recess, with success. I should also say that I have a 3-jaw machinists scroll chuck that enables me to easily do larger mountings, so I am not really in need of larger jaw options on my Supernova.

-- Einstein: "The intuitive mind is a sacred gift, and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift." I'm Poopiekat!!

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bobasaurus

1259 posts in 1839 days


#2 posted 04-25-2011 09:04 PM

Thanks for the input guys. I went ahead and ordered the PSI Barracuda CSC3000C off Amazon, with the large flat jaws. Having the extra jaw sets included will be nice. Apparently there are dovetail jaws available for it as well, though I haven’t found them available anywhere.

-- Allen, Colorado

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poopiekat

3630 posts in 2389 days


#3 posted 04-26-2011 01:15 AM

bobasaurus: Please do a review of the PSI Barracuda, once you get the feel of it! Let us know if you find a source for optional jaws for it too. It is comforting to have an added measure of safety if the work does loosen up on the chuck.

-- Einstein: "The intuitive mind is a sacred gift, and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift." I'm Poopiekat!!

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bobasaurus

1259 posts in 1839 days


#4 posted 04-26-2011 01:22 AM

I found a seller for extra jaw sets (including dovetail jaws):
http://www.pennstateind.com/store/c-series-replacement-jaws.html

I can’t wait to turn some bowls on this thing :). I’ve got some russian olive chunks just itching to be turned.

-- Allen, Colorado

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