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Angle on bowls

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Forum topic by KarenMW posted 05-18-2015 02:04 PM 679 views 0 times favorited 5 replies Add to Favorites Watch
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KarenMW

37 posts in 593 days


05-18-2015 02:04 PM

Topic tags/keywords: question maple oak scroll saw

So I spent time gluing 2 different woods together. A 1/4 in red oak and 3/4 maple. Waited a whole day for the glue to dry and starting scrolling the bowl per the instructions of 20 degrees. After I cut the bottom and the first ring, it did not layer correctly at all. Why are they not laying up? How does one determine what the angle should be?

-- Do not follow where the path may lead. Go instead where there is no path and leave a trail. ~Ralph Waldo Emerson~


5 replies so far

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MrsN

975 posts in 2990 days


#1 posted 05-18-2015 02:27 PM

How far off are the rings? bowls are never perfect and always require sanding, sometimes lots of sanding. How thick are the rings you are cutting? To determine the angle you need to know how thick the wood is and how thick your rings are.
Some where I have a chart or something, I’ll see if I can find it.
Katie

-- ----- www.KNWoodworking.com ----- --

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KarenMW

37 posts in 593 days


#2 posted 05-18-2015 02:35 PM

The wood height is 1in. The ring width is .25 I forgot I had a site http://www.scrollmania.com/ where one can design their own bowls and determine the angle. I was way off! Instead of 20 I should be somewhere around 14. I guess I’ll have to figure out a project to do with the bottom of the bowl that’s already cut. I forgot to measure twice and cut once …..:(

-- Do not follow where the path may lead. Go instead where there is no path and leave a trail. ~Ralph Waldo Emerson~

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Al Breit

32 posts in 1357 days


#3 posted 05-18-2015 03:00 PM

Karen Just the thickness of the wood will make a difference as far as the angle goes, the 20 degrees is an approximate. You would need to figure out he correct angle once you know the exact thickness of the wood. You could google trigonometry or figuring out angles and possibly get very close. Hope this helps.
https://www.mathsisfun.com/algebra/trig-solving-triangles.html

-- Al Breit

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MrsN

975 posts in 2990 days


#4 posted 05-18-2015 08:56 PM

The Scroll Mania site is awesome, very good information on cutting the bowls.
You can probably change your angle and do a little more sanding to make the bowl work out.

-- ----- www.KNWoodworking.com ----- --

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KarenMW

37 posts in 593 days


#5 posted 05-18-2015 09:14 PM

Thank you for all your help.

-- Do not follow where the path may lead. Go instead where there is no path and leave a trail. ~Ralph Waldo Emerson~

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