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First Segmented Bowl

Joined
Nov 5, 2021
Messages
6
Likes
106
Location
Tyngsboro, MA
The first time I used a lathe was a green bowl turning class in October 2021 and that's how I got hooked. I bought a Rikon 70-220VSR, safety gear and a few tools and have dabbled with bowls, pens, snowmen, captive rings on goblets. I tried my first segmented bowl within the last few days and I really like how it came out. The base was a maple bowl blank from Woodcraft, the segments were cut from maple and red oak boards from a box store, and from a piece of walnut board from a friend. The walnut pieces were a slightly different thickness than the rest to start. My finished product is just over 7" diameter and 4" tall. I don't have a drum sander, so I used a 10" diameter piece of pine on my lathe headstock as a large disc sander and tried sanding each ring that way.

I used a bowl scraper on the interior and it was slow going, I don't own any carbide tools (yet). I do have a sharpening set-up and resharpened a few times. Just when I thought I had the interior nice and smooth, I'd hit another spot and get some tear out. I knew I had plenty of material thickness but felt I was starting to just chase down a rabbit hole. The last time I did that, I ended up going the funnel club. Finally I decided to call it a "win" for my first try.

I included some photos of the specific spots, and appreciate any advice from the this group. Most of these "design features" are between the bottom ring and the bowl blank and I'm wondering if I didn't get those two surfaces perfectly flat. Or, is this relatively common and next time I should just keep at it with the scraper. I've made perhaps six or eight bowls so far, this was my first attempt at a segmented bowl.
 

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It looks to me like a job well done. If you're asking about the little corners at the intersection of the base and the first ring, turning off a little more from the inside surface would eliminate these. It looks like you have plenty of wall thickness to work with if you had wanted to go thinner.
 
Very nice segmented bowl. A little thinner wall thickness and those inside corners would be gone,
The glue lines between the rows are visible. I glue one row at a time vs. all of them. Flatten the row on the vessel and flatten the face of the next row then glue. I think a bowl gauge on the inside will get you a better finish. Hope you are working on number 2.
 
Haven't done segmented yet. If and when I do, I will use my drum sander for each ring to make sure they are dead flat before I glue them together. There are always some 'deviations' when gluing multiple pieces together. It would be possible to glue up several rings at a time if you have the clamps, and are quick enough, but I would think single ring would be the easiest way to go.

robo hippy
 
My 2 cents.
The AAW has a segmenters chapter. Gallery, forum and resources. Anything you want to know you will find there.
Most segmenters have Malcolm Tibbets book on segmenting in their shop. Valuable information on techniques and the math formulas I cant remember any more.
Most software companies for segmenting have free trial periods.
Lots of youtubes on bowl turning. robo hippy has good ones.
Learn the bowl gauge. No end grain in segmented bowls.....all side grain. Cuts like butter. Easy to ride the bevel, maintain direction and depth.
 
Learn the bowl gauge. No end grain in segmented bowls.....all side grain. Cuts like butter. Easy to ride the bevel, maintain direction and depth.
Refer to the photo 9490 and you will see the kind of typical chip out at the end of a segment that you can get no matter what tool you use. The way that I have found to avoid it is to use your bowl gouge the same way that you would to avoid tear out on a side grain bowl. The grind would be conventional with the heal rounded off then the cut is mostly on the point of the tool (see the video's by SB and his 40/40 grind).
 
Check this AAW chapter out ... https://segmentedwoodturners.org/ ... we have over 400 members ranging from beginners to experts and pros. Best $25 you'll spend to learn segmented woodturning!
 
"I don't have a drum sander, so I used a 10" diameter piece of pine on my lathe headstock as a large disc sander and tried sanding each ring that way."
I don't either but use MDF or plywood as sanding disk.
My method; I only flatten one side of the ring and glue that to base. When dry turn the top of the ring and use long board with strip of sandpaper to smooth. (Mark the ring with pencil and sand away the pencil marks). Turn the inside of the ring and bottom--may adjust latter but this avoids any deep turning. Flatten the bottom of the second ring and glue. Repeat above.
When all rings have been glued, turn the outside after overnight cure.
 
Nice bowl. I had the same lathe. Nice lathe I just out grew it. I also got hooked after turning my first bowl. I turn segmented bowls in between rough turning green wood and letting them dry.
 
My 2 cents.
The AAW has a segmenters chapter. Gallery, forum and resources. Anything you want to know you will find there.
Most segmenters have Malcolm Tibbets book on segmenting in their shop. Valuable information on techniques and the math formulas I cant remember any more.
Most software companies for segmenting have free trial periods.
Lots of youtubes on bowl turning. robo hippy has good ones.
Learn the bowl gauge. No end grain in segmented bowls.....all side grain. Cuts like butter. Easy to ride the bevel, maintain direction and depth.
Thanks, I'll definitely try my bowl gouge on the interior of a segmented bowl. I've been hesitant to try that, still a lot to learn.
 
My 2 cents.
The AAW has a segmenters chapter. Gallery, forum and resources. Anything you want to know you will find there.
Most segmenters have Malcolm Tibbets book on segmenting in their shop. Valuable information on techniques and the math formulas I cant remember any more.
Most software companies for segmenting have free trial periods.
Lots of youtubes on bowl turning. robo hippy has good ones.
Learn the bowl gauge. No end grain in segmented bowls.....all side grain. Cuts like butter. Easy to ride the bevel, maintain direction and depth.
I signed up with the segmenters chapter today. Looking forward to learning more.
 
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