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Flat Jaw Extensions-- Home made

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Forum topic by poospleasures posted 10-29-2014 11:35 PM 1005 views 2 times favorited 10 replies Add to Favorites Watch
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poospleasures

544 posts in 1949 days


10-29-2014 11:35 PM

Topic tags/keywords: woodturning tool jig tip home made jaw extensions

I have a set of flat jaws which will hold 8 inch bowls for finishing the bottom which work well. A few months ago found myself wanting to do some larger plates and bowls. Did not want to wait, or to pay the price for flat jaw extensions. I have some heavy aluminum alloy road signs given to me by our state hwy road crews. These are very rigid and strong and easy worked with bi metal tools. Used this material for my extensions and several other jigs and stuff.

You need to be pretty accurate for all the hole drilling required. You can use the rubber retainers from the original jaws or the ones like mine which came from lowes. They are tapered hard rubber stoppers which have 6mm holes drilled thru. They hold many times better than the ones that come with the jaws. Next pic shows the back and ugly side of the extensions.

I wanted to use them a while before showing them to you all. These pics show the 6th bowl they were used for. I always start by using tailstock support until I,m assured bowl is holding well with no wabble.

This is after some finishing and without the tailstock support and knowing it is holding well.

I usually start at about 200 rpm and increase on up to about 500. This one shows spinning at 500.

Hope I didn’t leave out anything. Thanks to everyone for looking. Always interested in questions and comments.

-- I,ve had amnesia for as long as I can remember. Vernon


10 replies so far

View recycle1943's profile

recycle1943

1156 posts in 1087 days


#1 posted 10-30-2014 12:46 AM

Vernon – you never cease to amaze

Great job !!

-- Dick, Malvern Ohio - Your imagination is your only holdup

View Jim Jakosh's profile

Jim Jakosh

17172 posts in 2570 days


#2 posted 10-30-2014 01:56 AM

Great job of adapting, Vernon!! I love it!!
Very nice bowl you are making, too!!

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View runswithscissors's profile

runswithscissors

2189 posts in 1490 days


#3 posted 10-30-2014 04:26 AM

I have used quite a few road signs for the aluminum. You’re right, it seems to be tempered, and very strong. For really heavy duty, I like the “Cascade Mall next Exit” type signs, or similar. They’re usually 3 or 4 feet square, and thicker as well. Yours looks like a stop sign.

You did a really nice job of fabricating.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

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poospleasures

544 posts in 1949 days


#4 posted 10-30-2014 10:15 AM

Mine is the thick stiff stuff. To protect the innocent I will not tell which Park it welcomes you to. I think these are supposed to be scraped and not used by cheapo’s like us.

-- I,ve had amnesia for as long as I can remember. Vernon

View Roger's profile

Roger

19878 posts in 2269 days


#5 posted 10-30-2014 11:46 AM

Fantastic Vernon. Wow! That bowl looks very awesome as well. I wonder if wine corks would work for gripping the bowl edge??

-- Roger from KY. Work/Play/Travel Safe. Keep your dust collector fed. Kentuk55@yahoo.com

View doubleDD's profile

doubleDD

5237 posts in 1508 days


#6 posted 10-30-2014 01:32 PM

I thought of making a set but opted to buy the penn state ones. Yours look professionally made. Great work Vernon. Wished you posted these earlier, I may have been out looking for road signs.
What are these rubber retainers from lowes you bought?

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

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poospleasures

544 posts in 1949 days


#7 posted 10-30-2014 04:28 PM

Roger I don’t think the corks even the synthetic ones would hold up to the tightening against the bowl edge. see rest of answer to DD.

double DD I found these at lowes in their specialty fastners drawers. There was several sizes there. Some are a little shinny but I got eight of them as I just wanted to drill small holes through them to use screws to fit on a plywood disc (with a glue block on it) to use for attaching some bowls to finish turn the bottom. I went back and got some much thicker ones and some 6mm bolts to fit the jaw holes after getting the flat jaws (because the silly little ones that came with them kept letting bowls jump off) then drilled 6mm holes in them. As these stoppers have quit a taper and are about 1” long they hold really well. I’ve only lost one bowl since but because I forgot to clamp past just hand tight.
Hope this helps some jocks and jockettes out there.

-- I,ve had amnesia for as long as I can remember. Vernon

View Rick M's profile

Rick M

7923 posts in 1845 days


#8 posted 10-31-2014 04:16 AM

Very professional looking job on the cole jaws. Reminds me of a ‘67 Bronco I had that someone had replaced the floor panels with stop signs. Now all I need is a sign and I can make a set of these.

-- http://thewoodknack.blogspot.com/

View doubleDD's profile

doubleDD

5237 posts in 1508 days


#9 posted 10-31-2014 04:45 AM

Thanks for the info Vernon. I like the idea of the taper. Should head to Lowes this weekend.

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

View Roger's profile

Roger

19878 posts in 2269 days


#10 posted 10-31-2014 12:30 PM

Thnx for the reply/s DD & Vernon

-- Roger from KY. Work/Play/Travel Safe. Keep your dust collector fed. Kentuk55@yahoo.com

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