I recently needed to cut a hole in a 3/4 inch pine wood board. The hole was supposed to be about 6 inches in diameter. I drilled a hole near the edge and used my corded Makita jigsaw. I had used the jigsaw before, but only to cut straight. I used a 10 teeth per inch blade that cuts on the up stroke. When I did this and tried to curve, the jigsaw wobbled a lot. It felt like the saw wasn't wanting to do what I wanted it to and I think I must be doing something wrong. I have watched a bunch of videos and it looks so easy to make curved cuts.
I was hoping that someone would be able to give my concrete tips on how to cut curves with a jigsaw. In articular I would like to know how to do this in 3/4 inch thick pinewood (hardwood?). I have looked this up, but I only find very general guides. Do I go fast or slow? What blade is best for curves? What speed setting should the jig saw be set at? etc.
I am a complete noob, so please don't assume that I know much already.