Buy a circle cutter. I got mine from NCE but you could try other rug making companies.
I have folded/pleated a runner on a staircase with pie stairs and never made a cut. It is a ooold method and not used very often. If you...
It could be scroop. That is when the carpet is overheated and makes a crunch noise when walked on. It can take a little time to show and often is...
Here is what NWFA says The face of strips may contain sound wood characteristics which are even and smooth after filling and finishing. This grade...
So the curve is pretty mellow and i like the idea of sewing darts in them. Will more darts work on a more drastic curve with a little hot water...