I'm refreshing some lawn & garden small engines, and I am wondering if it is possible/adviseable to knurl the pistons on a lathe. I understand it was common practice at one time but has gone out of favor these days. Some of these small engine parts are obscenely expensive. I mean its just for mowing the lawn.
I've been honing out the taper with a rigid hone and the pistons have good grooves but are a little under sized after honing. Just use a regular knurler under the pin hole maybe?? I know it was done with a dedicated machine at one time but a knurl is a knurl huh.? If it goes over sized just knock it back with a file?? Need a special chuck or go with 3/4 jaw??
Been grinding the valves on the lathe using a small router (with the ways covered) fitted into the compound, not as nice as a sioux but the final results are great.
Any advice/comments appreciated.