Sure. It's more akin to wood lathing than steel lathing in that you are holding on to the tool rather than the tool being fixed to a jig. Get one of those long locking jaw clamps that you can expand to grip the engine mount and have the excess of the tool stick out toward the clutch side of the engine. This will be what you will rest the base of your chisel tool on just as on a wood lathe so you can get leverage. Hopefully have prepped the shaft with acetone before you applied your epoxy putty. It needs to be very clean for good adhesion. When your PC Plumbing putty or JB weld has set, start the engine and let it idle (in a well ventilated area so you don't inhale exhaust) and use a sharp 3/4" chisel as a cutting tool. You cut from the bottom of the shaft, not the top, and your chisel bit should be upside down so the slant of the bit is facing down. Put the left edge of the chisel lightly against the clutch as it is spinning so you can get a right angle on the cut. Take a small amount off and see if the bearing can fit snug on the shaft. Keep doing till the bearing can slip all the way down to the clutch side of the shaft. It should be true when you are done and the chisel should be in need of sharpening as the epoxy resin is very hard. You can use a strip of sandpaper as the shaft is spinning to take off the last .001" or so for a perfect fit. If you mess up, just clean with Acetone and apply again and repeat till you get it right. Sharpen your chisel with an oiled stone for best results.