I am trying to cut a spiral into 1/4" plywood. I have the layout OK, but trying to get a smooth Arc is very tough. Both the jigsaw and bandsaw are prone to wandering. Does anyone know of how to cut a smoother cut? Maybe a roto zip tool would be better but how do you keep the cut arc even?
The spiral is 1" wide and starts at 12" in dianeter.
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