Flattening Segmented Rings

3/21/05, 4:13 PM #1

Stuart Johnson
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Registered: 1/6/04

Flattening Segmented Rings

Stuart Johnson

>Rather than keeping with the topic under drum sanders I thought I would start a new one.

I start with the bottom (either segmented or solid) glued to a waste block. My rings are now glued up at one time rather than pairing the segments. When I initially tighten the ring clamp I snug it up and then tap each segment and divider to make certain it is flat on the underside. I then finish tightening the clamp.

Once tried I stick it in the cole jaws and flatten the side that is to be glued to the bottom or last ring. The face plate is then returned and the bottom orlast ring is flattened. I screw on a tailstock chuck adaptor (Packards pg. 23). The ring is then glued on using the tailstock for centering and pressure.

The drawback to this process is the lathe is tied up while the ring dries.

Re: Flattening Segmented Rings

3/21/05, 4:40 PM #2

Jay in TX (formerly from Ohio)
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Re: Flattening Segmented Rings *LINK*

Jay in TX (formerly from Ohio)

>Stuart,

This sounds like a good method, except for the lathe being tied up. I'm not a segmentor, but if I wanted to start and didn't want to invest much time or additional funds to begin the adventure, I'd do what you're doing to bond the flattened ring with the base (or previously bonded pieces).

If, after a couple projects, I thought I'd like to put this talent to moderate use; then I'd build a glue press like the one shown on Kevin Neeley's site. You can find the page at the link, just manually scroll down (as I couldn't get the perlink on the page to work). There are also models out there that self center using a longworth chuck as part of the design, but I couldn't find it quickly so its not listed in this message.

Kevin's Press

Re: Flattening Segmented Rings

3/21/05, 4:46 PM #3

Stuart Johnson
Member
Offline
3,310 posts

Registered: 1/6/04

Re: Flattening Segmented Rings

Stuart Johnson

>I actually have a Longworth chuck and the rest of the the hardware to make one of Kevin's centering jigs but don't want to try findinge shop space for it.

Re: Flattening Segmented Rings

3/21/05, 7:39 PM #4

Mark Kauder, Phenix City, AL
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Re: Flattening Segmented Rings

Mark Kauder, Phenix City, AL

>Well, as has been said before - find 4 segmented turners and you will have 8 ways to buid a segmented bowl.

I turn the base flat on a waste block for either my chuck or a face plate.

I glue up rings with all segments at one time (I used to do pairs).

I sand the bottom of the ring on the belt sander.

I then lay the ring, top down on the bench, center that portion of the bowl that is on the faceplate on the ring. I then take 3-4 small scrap pieces and CA glue them around the perimeter, so that the bowl will remain centered while gluing. I also make a couple of registration marks with a pencil to show joint alignment.

I apply glue, spin the pieces a little to spread the glue evenly, and then clamp in a homemade bowl press (similar to Kevin's). Just made a bigger one this weekend. It will hold a 18" wide by 23" tall bowl (though I could make it higher by just moving the top brace).

Once dry, the assembly is turned round and the top flattened with gouge and sanding board.

The lathe is only tied up while turning, I keep glue squeeze out of the lathe, and I do not have to keep changing chucks and Jaws, etc. The only time I have used the Cole jaws for flattening since I got the belt sanders, is when I did an 18" platter. Since I do multiple bowls at a time, I can have rings drying, bowls clamped and drying, and be turning bowls that are dry, all at the same time.

Repeat process until complete.

Mark

Flattening Segmented Rings

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