dnalot
Project of the Month Winner !!!
My next step is to hollow out the upper half of the crank case. This required three stages, first the center area that is flat, followed by the two angled sides. I plunge cut for the rough out. Its a lot of material for a small mill so it took some time. Next I made the cutouts for the center bearings, cut the slots for the bearings splash oilers and bored the holes for the cylinders and push-rods.