On the bottom of the gutter itself take a pencil or marker and trace the outline of a sleeve.
Cut hole in gutter for downpipe.
Drill a hole in the bottom of the gutter at the 4 inch mark with a 1 inch hole saw attachment to the drill.
This one came with holes in it for rivets.
Center the connector around the hole and trace the outside of the connector with the pencil.
Step 2 drill four holes in each corner of the outline you made of the sleeve drill one hole.
Here you can see the shape of the downspout flange i had.
Then i used a fine tooth metal cutting blade in my jig saw.
Step 1 is to draw the shape of the hole and drill s few holes around that shape.
How to cut and install a gutter outlet.