@Allen levine, usually, the largest blade I have used is a #5. That was for thick wood, 3D cutting. I normally use a #2 or less skip pegas. But I rarely scroll more than 3/8" thick stacked. For 3D cutting, I use a double skip with fewer teeth than a skip. Anxious to see how you like intarsia. I have done a little of it. I Want to do more. To me, that is really where the artist of scroll sawing starts. Selection of woods and shaping. The only thing, in my opinion, above that is double bevel marquetry. Do not get upset, people this is my opinion. But marquetry is the real scroll saw art to me. I only wish I had the talent to do it. But time is not over for me. Went to to the Doctor yesterday, he thought I was doing very well for my advanced age (advanced age, excuse me!). I to him, he is 42, just a child yet, I hope he is as happy at my age as I am (80), That damn whippersnapper!