An interesting discussion. Many changes in saws over the years. I started with a cheap Dremel Moto saw that used 3 inch pin blades. Very soon found out it was not the saw I wanted. Then moved on to a Delta 15 inch single speed direct drive. After using for a few months I found some information on how to make some modifications that made it easier to use. First I cut a slot in the table with hacksaw blades taped together similar to the Hegner . That made it great for changing /threading blades. The saw still ran too fast for my liking and had a lot of vibration. To slow it down I changed to a belt driven system. Mounted the saw and motor on 3/4 inch plywood. The motor was mounted at the back to the right of saw and a small 1 1/2 inch pulley attached to the motor shaft. Then I mounted a shaft on pillow blocks to the lower arm of the saw. A solid steel 3 inch pulley was attached to the shaft and a belt then from the motor to drive it. The steel pulley acted like a flywheel and smoothed out the vibration, while the difference in pulley sizes slowed the speed to where I was comfortable sawing. I used this until I wore the bushings in the arms out. I replaced the arms (you could actually get replacement arms at the time) , continued using it for a while and then decided after much browsing of books and magazines on scroll sawing that , if I was to continue I wanted a saw that would last. I ended up with the Hegner 22 inch which had just come out not long before (1993) and with regular oiling and replacing a couple of parts it still serves me with excellent results. Each saw has its own pluses and minuses and what you make is easier with one than the other. You get what you pay for, cheaper saws do not last , are noisey, vibrate, and you soon give up on scrolling . The better saws are quiet, smooth, easy to use and you can enjoy your scrolling experience for years as I have for over 30 years now, since about the mid 1980s.
Garry