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General Category => Brag Forum => Topic started by: DWSudekum on March 03, 2011, 06:56:15 pm
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Here is my new bowl with a few work in progress pictures and the finished bowl.
(http://i53.tinypic.com/1zg23d.jpg)
As you can see in the picture above I used 3/4 in Poplar Plywood and 3/16 Clear Pine and cut strips that were 7/8 wide and 9 in. long. I decided that the blank was incomplete so I marked halfway on each side and connected the marks. I cut the corners off and added a 1/4 inch thick padauk strip on each side. I decided on a simple round bowl cut at 29 degrees left side down.
(http://i56.tinypic.com/futn5l.jpg)
(http://i52.tinypic.com/i3v4ft.jpg)
(http://i56.tinypic.com/fn7q52.jpg)
(http://i52.tinypic.com/2a6nlad.jpg)
DW
I have reposted the pictures using an alternative hosting for the images as aparently ImageShack still is infected. Sorry about that
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Really, really cool! The padauk strip really looks awesome!
Sheila :)
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WOW you did another great job. really like the bowls you make. i got to learn how to to make them someday. thanks for posting
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The extra stripe looks awesome! Great job. I have done a few baskets, but haven't tried a bowl yet, I may have to do that one of these days.
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Your bowls look fantastic.
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Very nice Bowl, i like the extra stripe, looks very good.
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awesome job.
thanks for the pictures of the " whole" process
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Beautiful job, DW.
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Looks amazing.
David
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Fantastic work! Thank you for posting that.
Bill
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***WARNING***
I had to remove the pictures/links to the bowl do to the AV8 virus. It tried to attack my computer when I tried to view them, but my anti-virus stopped it. I have also had reports from others who have had the same problem. Once again make sure you check you computer if you viewed the photos.
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Is there a trick to knowing the angle of cut, compaired to the width of the rings and thickness of the wood?
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Very nice. The stripe gives the bowl a special, unique look.
Jim
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Is there a trick to knowing the angle of cut, compaired to the width of the rings and thickness of the wood?
There is a formula to find the exact angle you need so that the ring is the same thickness top to bottom. The formula is straight out of Trig. Set your computer's calculator to scientific so that you have the trig functions available.
Take the Inverse Tangent of the answer of( ring width / board thickness ) this will give you the angle.
So for instance
a board you want to use is 3/4 in. thick ( .75 ) and the rings you want to cut are 3/8 in. thick (.375) then you would divide .375 / .75 and that gives you an answer of .5 Take the inverse tangent of .5 and the angle you would need to cut is 26.56 degrees. Since most of us can not measure degrees that closely, 27 degrees works out just fine. To get the inverse tangent on the calculator locate the INV button then then the TAN-1 button.
hope this helps
DW
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AWWW! And they said there would be no math! Seriously DW that bowl is awesome and I think you should consider submitting an article to the scroll saw mags with step by step instructions. I have lots of strip wood and would dearly love to make one of those.
Regards,
Terry
terrysscrollshoppe.blogspot.com
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All ready been done by Carole Rothman. She has a book out called Wooden Bowls from the Scroll Saw published by Fox Chapel Publishing. The techniques I used for the bowl were heavily influenced by this book. Once you get the idea and techniques down the sky is the limit. You can really make some outstanding looking bowls, boxes, vases and urns all with the scroll saw. If you do not have the book it is well worth getting for your library.
DW
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Good work there DW!
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I followed along how you got the rings cut .....and then I got lost. The math stuff just made me wimper. ;D
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Great job thanks for posting it.
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fantastic bowl wish i could make them
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I followed along how you got the rings cut .....and then I got lost. The math stuff just made me wimper. ;D
Ok here is a simple table you can use - Remember the table will be set LEFT side down and you will be cutting clockwise ( rotating toward the down side )
wood thickness ring thickness degree to set
1/2 inch 1/2 45 degrees
3/4 inch 1/2 34 degrees
1 inch 1/2 27 degrees
1/2 inch 3/8 37 degrees
3/4 inch 3/8 27 degrees
1 inch 3/8 21 degrees
1/2 inch 1/4 27 degrees
3/4 inch 1/4 19 degrees
1 inch 1/4 14 degrees
Hope this helps
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Well that makes it much simpler now! Thanks DW.
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Nice job. looks great
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Sorry to "thread jack" here, there is a site http://scrollmania.com/index.html that you can make your own patterns and it also does the math for you. I have 5 bowls I am finishing up I made from this site. There are tutorials on how to use the programs. You can make round, oval, asian(square), and morph bowls with his program. I also like his bowl press.
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There are several ways of doing bowls. One is to stack the rings so that they alternate one on top of the other, yet another way is to cut the rings at an angle so that when they stack they form a continuous wall. Both styles make neat looking bowls. Dave's program can with some inputting of some numbers on your part and with a bit of time and effort to go through the tutorial, can make really neat patterns. I have used it myself for some of my bowls. Have not tried the angle calculator he has though so I can not speak about it but if it makes it easier cool by all means use it. Easy is good :) Above everything else have fun, stretch yourself see what you can build. What is the worst that can happen.... another piece of designer firewood? We all have been there and done that, you should see my pile:)
DW
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Awesome job , unless someone has made one of these they don't know just how much time is in one of the bowls......time consuming in the sanding for sure ............