I did years back but didn't like the bending forces on the case and the loads on the bar studs. No reason for concern, many people use them, just my concern for vintage cases.
Last month I made this based on the Husqv design. China copies of Husqv splitter are $55 on amazon, but I wanted adjustable width to use on mc cases also, and adjustable height for the push screw as in some cases I can't get the tips down far enough to be directly in line with the screw. Plated would have been better, as painted means paint chips can come off into the case, but since it is a take apart tool, not a put together tool, it is fine.
1/4 x 2 and 2-1/2 flat as that is what I had handy. 3/4 threaded rod, Hex njut tacked on end and hole drilled to turn with screwdriver or rod, countersink hole in the push end, and use a loose bearing ball sized as needed to mate into the crankshaft center point. ties between sides are 3/8 threaded rod. The long leg was just dropoff I never cut off as it was handy to clamp in a vise.
