Cutting angles on a flat sheet.

[porschercr]

To make angles on a part, do I initially make it wider and or longer than needed, then sand diagonally?

[Fat Brian]

What I do is make the part a little long, fit the joint how I want it, then sand the flat end to correct the length. Parts that are mitered on both ends can get a bit tricky.

[porschercr]

Brian,

Thank you, mitered.... I couldn't remember the correct term.

"Parts that are mitered on both ends can get a bit tricky." That is what I need to do..?

Trevor

 

[Plowboy]

Exactly what is it you're making? If you're using sheet styrene, I see no need to miter the corners. I just let the edges stick past and sand them off.

[Tom Geiger]

If you are working with Evergreen strips, this chopper comes with attachments for the popular angles. I have also taped down a stop to get pieces the exact same length. 

[NOBLNG]

Thin flat strips can be overlapped and Chopped at the inside and outside intersections to get a symmetrical joint...if that’s what you’re after?

 

Edited October 14, 2020 by NOBLNG

[porschercr]

11 hours ago, Plowboy said:

Exactly what is it you're making? If you're using sheet styrene, I see no need to miter the corners. I just let the edges stick past and sand them off.

This is the rear section between the wheel wells, I'm specifically asking how to cut those angle. I need to raise that section for the project I'm working on.

Sorry for the rough picture, difficult to get a clear shot.

Edited October 14, 2020 by porschercr

[NOBLNG]

I would hang the piece over the edge of your bench and file the angle you need. Use a very large flat file held at the angle you need and file inline with the edge, not across it. This will give you a flat and straight angled edge. Cut the second piece wider than needed and glue it on protruding a little above the top piece. When dry, sand the edge down flush. This way, you are only dealing with one angle. Someone may have a different method? Good luck.

Edited October 14, 2020 by NOBLNG

[Fat Brian]

Okay, that's a lot different than what thought you were asking. Here is how I did that. I cut out the area over the axle and notched up into the wheel wells the amount I needed to lower it. Then I used strips of styrene on the top of the chassis plate to deepen where the axle goes through. Once that was deep enough I used a flat sheet to replace the floor pan piece then sealed the wheel wells back with more strips. I still need to trim the inside but this is what it looks like.