Been using a Sears for years. EXACTLY what isn't safe about it? Hundreds of thousands were sold. Small cabinet shops ran door edge profile using them. I've used mine to make replacement siding, and treads for fold up stairs, amongst other things.
Well, first, go back and re-read EXACTLY what I wrote. I never said the Sears wasn't safe, now did I? I only said the Magic Molder was safer.
But, lets look at the physics here- The Sears has a larger diameter which means high tip speed. The cutters extend past the main disk in some cases by an inch or more, increasing the diameter and also making a grab a much more serious event. I had one or two grabs but was lucky, no injury and I have all ten fingers. The large diameter and cutter extending beyond the disk means, in addition to a wide table insert cutout, you must have a long table insert cutout, so depending on the cut, your stock may not be adequately supported. Cabinet door cope and stick cuts were especially problematic. Years ago I made oak frame and panel cabinet doors for an entire kitchen using the Sears molder, but never again. The Sears, wasn't especially well balanced either, and caused my Shopsmith to vibrate and walk across the floor. It caused my Unisaw to vibrate, also. That is tough on arbor bearings. I may be wrong, but the Sears cutters are held in place by only one screw, while the Magic Molder has a multiple step retention design to securely hold the carbide cutters (the Sears were not carbide.) There were all kinds of tools and machines that were in wide use and considered safe in their time, but certainly not by todays' standards. So, I'll let everyone make up their own mind.