Cut it by hand using an Airway #6 knife. 4 or 5 passes. Clean no dust. Cut curves easy. Replace blades frequently.
This knife uses the #25 straight blade, order them with the knife. Sometimes at HD.
This is like a box cutter but much thinner and way more sharper. It has a shaving quality edge on it. It will not bind up in a deep cut. Caution: you can cut a finger to the bone before you feel it enter the skin. Ask me how I know.
No dust, just a clean cut. I use a lot of blades. I love neat crisp edges.
This is one of my TT locations.
Knife and blades available at floor covering supply houses.