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it99 05-02-2012 09:51 AM

cutting mouldings that are not right angles
I am trying to cut mouldings around the base of my bar I am building. I cut the angles 45 degrees, but realized that it wasn't lining up right so it must not be a right angle for the corner of the bar. So I thought this was going to be easy but now i have no idea how to figure out the correct angle to use. Are there any trick measuring the correct angles to cut it correctly. Thank you very much.!

joecaption 05-02-2012 09:59 AM

I use one of these, but just using some scrap pieces first for test fits also works.

mae-ling 05-02-2012 10:01 AM

Or overlap paper past the corner and tape it together. Then fold it in half.

it99 05-02-2012 11:48 AM

angle question
Thanks for the ideas.

What if the angle I find is > 90 degrees?

I can only go as high as 45 degrees on my mitre.

Is there a trick with flipping the wood or something?

inthedrops 05-02-2012 01:07 PM

If you have the patience, and scrap material, you do test cuts until the fit is perfect, then cut the real pieces. It's how I install molding when I do it. I've tried the calculation and measurement methods and this is the only foolproof method I've personally found. Nothing is ever square. For your scrap cuts, make sure the pieces are long enough that you can push them in as though they were being nailed to ensure it bends the same as when it eventually gets nailed (this is one of the issues those measurement transfer tools can't handle)

jaydevries 05-02-2012 08:39 PM

to get past a 45 use a thin shim against fence. not fun but if saw only goes to 45 that is what i used to do

mae-ling 05-02-2012 10:22 PM

if they are more in the 50degree range this works.

woody4249 05-04-2012 12:34 PM

This is a little difficult to describe with out using my hands, but it is really simple.
Imagine things from a plan view [birds eye]
I use a sliding bevel square or maybe you call it an adjustable angle square.
If you don't have one, you can easily make one with something like a couple of paint stirrers and a small screw. This can be used to transfer your actual angle from work to piece of paper or scrap wood. This works for an inside or an outside angle of less than or more than 90 degrees.
Using a pair of compasses, "Bisect" the angle now drawn on the piece of paper. This is done by opening the compasses to any random angle. Place the point of compass onto the meeting point where the two surfaces of your work meet......we'll call this [A] Strike an arc across each angle line.......we'll call these [B1 & B2]
Then place the compass point on each of these intersecting lines first on B1 and draw a circle. Repeat this on B2 Where these circles cross over each other is the Bisecting point........we will call [C] Join this point C with point [A] and you have the correct mitre angle. This can be transferred to the mitre saw.............piece of cake.

Woody 4249

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