I'm not sure I understand the question. With the jigsaw, it'll cut
whereever you guide it - so I always "follow the lines". Whatever line I
follow, that's where it cuts.

Jack


I'm not talking about "following the lines," my garbage saw will do
that.

I'm talking about the cut you're attemtping to make actually being cut
at 90 degrees...too much blade deflection means your cuts are bevelled
when they're not intended to be. It's the #1 problem with most jigsaws.