Mark the plumb cut at the top of the rafter.
How to figure and cut a outside angle on gutters.
For example if you have 30 feet of guttering the calculation is 1 4 x 3 0 75 i e.
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I ve got an aluminum blade on the miter saw.
For example if the gutter is 16 feet long the end near the down spout must be 1 inch lower than the starting end.
It was easier for me to determine the angle cut a pattern from a scrap piece with the miter saw then cut the angle by hand so that i could keep 3 4 or 1 inch tab beyond on the interior portion to overlap.
Set the framing square on top of the rafter beam with the tongue facing the top of the rafter.
Then use a pencil to trace the outside edge of the framing square s tongue.
As a general rule gutter slope is set at 1 4 inch per 10 feet of guttering.
Making an outside gutter miter.
Easy way to cut a 45 degree angle for inside and outside miters in gutters.
Cut all the way through the trim to create the corner angle.
Step 1 measure carefully and determine angles the 90 degree turns that must be made by your seamless gutters to go around the corners of your house are accomplished by attaching to pieces of gutter at the corner that are both cuts at 45 degree angles in relation to each other.
Gutter installers a new product.
Tips for cutting inside outside gutter corners.
To get started measure the side of the house directly under the gutter to determine its length in feet.
The plumb or ridge cut is made at the top of the rafter.
Choose which end of your rafter you want to be the top.
This means the downspout end of the gutter should be set 3 4 of an inch lower than the other end.
Turn the angle gauge clockwise until it is oriented to the left hand 45 degree angle setting.
Doing this is similar to cutting an outside corner.