90 Degree Channel/Chamfer Cutter Double Blade Holder

This tool holds two metal blades tilted at 45 degrees horizontally (also 40 degrees towards the pull direction, for easier slicing).

I made this tool to cut perfect 90-degree v-shaped channels into 3mm foamed PVC. It takes out a triangle of material, 1.5mm deep, 3mm across, great for making 90-degree heat-bends look sharp and create smaller fillets.

The cut is made 25mm away from the straight edge of the tool (I use a printed spacer).

To make straight cuts at full depth you need a good