Cutting precise angles - Router Forums
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post #1 of 21 (permalink) Old 05-02-2014, 09:24 AM Thread Starter
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Default Cutting precise angles

I want to make a stave drum and I'm not sure how to cut the angles. I want 12 staves which will mean a 15 degree angle for each cut. I have a choice of a router and a hand saw.

I have nothing to measure angles at the moment, I was planning on using trigonometry and measure things. I was going to make an angled jig to clamp my wood to and then run it along my router table. I'm not convinced that the router bit is completely perpendicular to the table though. The other option is a hand saw, but I think that will probably be less accurate.

What would you recommend?
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post #2 of 21 (permalink) Old 05-02-2014, 09:48 AM
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Peter,

Comparing accuracy of cut with router table versus "hand saw" is like comparing a sniper rifle to throwing a rock. You can buy a protractor to measure angles for $1.00 at Wal*Mart. A good quality protractor or angle gauge for woodwork can be had for $15.00 or less...

Otis Guillebeau from Auburn, Georgia

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post #3 of 21 (permalink) Old 05-02-2014, 11:47 AM Thread Starter
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Peter,

Comparing accuracy of cut with router table versus "hand saw" is like comparing a sniper rifle to throwing a rock. You can buy a protractor to measure angles for $1.00 at Wal*Mart. A good quality protractor or angle gauge for woodwork can be had for $15.00 or less...

Otis Guillebeau from Auburn, Georgia
I've just ordered an angle guage. I'll start making the jig soon.
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post #4 of 21 (permalink) Old 05-02-2014, 05:01 PM
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Hi, Peter; welcome!
You didn't fill out a profile, so other members wouldn't know whether or not you have access to a tablesaw(?).
For what you want to accomplish, sure, you could cut the staves out oversized, and hand plane them down to a perfect fit, but that assumes a lot of hands-on experience on your part. Might be a fun learning project, but don't expect a perfect fit first time out of the gate; that's going to take practice. But as I said, a great learning experience.
I've been working with wood since my teens, but that'd be a challenge for me.
Begging the use of a tablesaw is your best short term answer.
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post #5 of 21 (permalink) Old 05-02-2014, 07:10 PM
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Cutting angles on the table saw
at 12:30

https://www.youtube.com/watch?v=O1-LYCKbYG8
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post #6 of 21 (permalink) Old 05-02-2014, 10:39 PM
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I would also probably use a table saw but you can also buy a 15*bevel router bit (along with a variety of other angles).

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #7 of 21 (permalink) Old 05-03-2014, 03:11 AM Thread Starter
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I haven't got a table saw. I only have two power tools, a drill and a router. A table saw would be ideal, but I haven't got anywhere to store it.
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post #8 of 21 (permalink) Old 05-03-2014, 09:08 AM
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Build a jig to hold the wood at a 15 degree angle. The jig should be adjustable. Then use a straight bit.
Use cheap wood for the staves until you have dialed in your jig.
Great project. You will learn the difference between theory and practice. (Practice wins)

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Last edited by rwl7532; 05-03-2014 at 09:12 AM. Reason: added the battle.
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post #9 of 21 (permalink) Old 05-03-2014, 01:05 PM Thread Starter
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Originally Posted by rwl7532 View Post
Build a jig to hold the wood at a 15 degree angle. The jig should be adjustable. Then use a straight bit.
Use cheap wood for the staves until you have dialed in your jig.
Great project. You will learn the difference between theory and practice. (Practice wins)
I started making a jig today but got the sizes completely wrong.

What's the best way to cut the pieces to size (not angle them, but just do the lengths and widths)? Would it be best to do one, and then use it as a template with the router? The lengths aren't as important (as the ends will be cut off later), but the widths must be the same.

What's the best way to make the jig adjustable? Nuts and bolts to adjust the height at the end of the ramp?
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post #10 of 21 (permalink) Old 05-03-2014, 02:31 PM
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You need 12 identical pieces to determine that your attempts at 15 degree cuts are good. Likely they won't be. Which is why using cheap wood is a good strategy.

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