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# Cutting 45* angles

## Cutting 45* angles

#1
12-21-00, 06:17 PM
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Hoping you can help me
figure out a simple way
to figure: am gonna be
doing lotsa 45* on 2 x 4s
and 2 x 6s....

calculation......

If I have a 48 inches
(outside edge) 2 x 6
(5.5" wide), my 45* angle
off this is 45.5
inches????

I am thinking my medium
is 5.5 (inches) times 45%
= 2.475 (2.5)
inches......am I on the
right track. If so or

#2
12-22-00, 04:03 AM
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Join Date: Dec 1999
Location: South Dakota
Posts: 2,999
I am very unclear as to what your doing. When you make a 45 degree cut, just lay you square down on either the top of the cut or the bottom of the cut and draw a line and cut.
One thing I did notice by your calculations, you have assumed all your lumber is an exact 1/2" For instance a 2x6 is 5 1/2" by your calculations. In reality this is not true especially with the lumber dimensions system just put into place. I can honestly say in my entire life I have never cut a 45 degree angle using a median measurement. It is a waste of time.

#3
12-23-00, 07:32 PM
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Join Date: Nov 2000
Location: Austin, TX
Posts: 4,857

I think he is refering to "long point" and "short point" on the 45. If this is true and on the edge cut, at 48" Long point the short point would be 45"
Now for a flat cut, the short point would be 37".

#4
12-30-00, 10:25 PM
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Join Date: Mar 2000
Location: Lake Murray, SC USA
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Received 1 Upvote on 1 Post
If you want to cut a 45 degree angle, Jack has the easiest method. However, what will always work is to measure the true width of the board, be it 5 and a 1/2 for a 2X6 or 3 and a 1/2 for a 2X4, and measure down the board the same dimension, 5 and a 1/2 or 3 and a 1/2, and draw a line connecting the end with this mark.

#5
12-31-00, 04:20 AM
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anyone ever hear of a speed square?