My 1935 powr kraft saw uses regular plain end blades. To make sure that they work well in the powr kraft saw I have to snip them down to about 5 1/8 inches long with a pair of dikes. This gives the saw return spring enough of a preload to keep the tension where I want it. It also has the bonus feature of removing the angled ends of the blade which allows the blade holder to get a real good grab on it.
Make sure you pull the blade clamps off and really give them a good cleaning, it will keep the blade from slipping. Also, assuming you saw is similar to mine, you'll have to make sure you keep the blade guide just a little above the work. The spring can be overcome if you feed to fast, causing your cut to wander. Keeping the guide close helps this a bit.
Last edited by kp91; 02-17-2012 at 08:40 AM.