Gutter joint at odd angle

For reasons best kept schtum, I needed to extend an existing gutter with a 6° offset.

Take a standard coupling and remove the seals.

Remove the stiffening web.

I used a Fein multitool, with a narrow saw blade, from both sides.

Cut along the red lines, a bandsaw's easiest

The underside will be reinforced with a piece of gutter so pull the cut edges together, clamp

 and make a paper templet.

Mark templet shape on gutter and cut out.

Deburr and abrade bonding areas.

Apply your favourite epoxy, I used Ever Build Putty Aqua.

Clamp the outside together then use a couple of carpenters cramps to squeeze the adhesive at various places back to the inside.

Warm the joint with a hairdryer and leave clamped until cured.

Apply more adhesive to fill the gap.

Install

Here's a video of how to do it properly