Making the 7.5 or 9 degree front angle

[JoeyE]

This might help those making a trainwreck style cab. This may not be new news but this is my method of measuring a 7.5 degree angle in a trainwreck style cab.

In a 3/4" thick wood and looking at it the way it is going to be positioned in the cab. I made a line along the length on the front 2" inches from the bottom and another line along the length on the bottom (the 3/4" thick wood) dividing it to 1/2" rearwards and 1/4" forwards.

Joining the start and end of these two lines on the woods sides will give you exactly 7.5 degree angle.

Anyway, heres a drawing that might help.

[Distortion]

If this works for you that is all that matters.
The problem most people have is cutting the taper in a smooth consistent manner.
I use a tablesaw adjusted to give me a 1/2" cut. Then I adjust the angle of the blade out to aroud 10 to 12 degrees.
Place the portion of the panel that will have the taper away from the fence and against the the blade.
Make several consecutive passes making adjustments to the blade angle with measurements on the taper until the taper runs up 2".
Once you have done this a time or two it is quite simple. I can cut the front taper in less than 5 minutes from setup to completion.
The only rub is you are running the front panel upright against your fence and this can be a bit intimidating if you are new to using a table saw.

[skyboltone]

If this works for you that is all that matters.
The problem most people have is cutting the taper in a smooth consistent manner.
I use a tablesaw adjusted to give me a 1/2" cut. Then I adjust the angle of the blade out to aroud 10 to 12 degrees.
Place the portion of the panel that will have the taper away from the fence and against the the blade.
Make several consecutive passes making adjustments to the blade angle with measurements on the taper until the taper runs up 2".
Once you have done this a time or two it is quite simple. I can cut the front taper in less than 5 minutes from setup to completion.
The only rub is you are running the front panel upright against your fence and this can be a bit intimidating if you are new to using a table saw.

this is the way I do it.

[gahult]

Here is another way to try. JoeyE is close on the 71/2 deg. angle as I have suggested in previous posts. See the trig. note at the bottom at the bottom of the drawing.

Gary

[gahult]

So that's not very big. Try this

Gary