Use a carpenter s square to get around to the bottom.
How to miter cut aluminum gutter.
I used a non ferrous metal cutting blade that i go.
This is a quick video showing how i cut some aluminum angle strips with a dewalt dw713 compound miter saw.
Use the old adage measure twice and cut once then turn the gutter upside down on the table and mark it all the way around.
Extend the cut mark around the aluminum gutter by aligning the blade of the combination square with the length mark you placed on the bottom surface of the aluminum gutter and running the carpenter s pencil along the edge of the combination square blade.
How to cut gutters with miter saws.
Laying your gutter on the workbench measure off the amount of gutter you want to cut and mark it with a pencil.
Install a 12 inch blade with a carbide tipped finish on the miter saw.
Measure the gutter to the desired length.
Watch how to create a mitered corner from one of america s oldest and most trusted buildin.
Mark a spot on the edge of the gutter with a pencil as a guide.