Asking for some info & advice here - I have a Delta 24" scroll saw, probably a late 1940's model. It's in great shape and runs good. I've made some Christmas ornaments, puzzles, etc. but am still in the learning curve as to what type blade to use where, etc. A couple of questions - How important is speed - could I be running it too fast making following a line harder than it should be (this saw doesn't have the variable speed pulley, but does have multiple size pulleys). I know this saw is a lot beefier than those on the market today - are today's saws much improved and thus give more satisfactory results, or is it just a matter of experience & technique to get equal results to "modern" saws? Not having ever used a newer saw I don't have anything to compare to.