Skirting Mitres!!

[electrified]

Hello I’m trying to cut skirting board mitres but my issue is that I have 6 inch skirtings and will not fit under my chop saw upright against the fence is it called?

So I was under the assumption okay no worries I’ll lay it flat and use the bevel angle, however after some searching it appears this gives you a complementary angle on the piece you need?, so say I set the bevel to 30degrees, it’ll leave me with an angle of 60 on the skirting. This obviously isn’t what I want, I’ve measured my wall and the angle is 87.5degrees, so half of that is 43.75degrees, but if I want to use the bevel I need to subtract this from 90, so 90-43.75=46.25degrees, but my chop saw only goes to 45degree bevel, is this right or am I missing something big? I feel like this is a tool limitation?

Thanks.

 

[crank39]

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[chirpychippy]

On a chopsaw, if you lay the piece of skirting flat on the bed and set the angle at 45 degrees, the mitre it will give you is 45 degrees.

If you set it at 30 degrees the mitre on the skirting will be 30 degrees not 60 degrees, if you cut two pieces of skirting at 30 degrees and glue them together you will have a 60 degree angle.

So setting the bevel angle at 43.75 and cutting two at this angle will give you an angle of 87.5 when both boards are joined.

If it doesn't there is something wrong with your saw.

 

[electrified]

Hi yeah I’ve done this but instead of me getting an acute angle for my wall it give me an obtuse more than 90 that’s why I thought about if you needed to take it away from 90, just wish all my walls were 45, I’m not sure what I can do I’m really lost.