The following website on U Tube shows how to bore out a cylinder using plastic spoons in a hand drill honing it out using a tennis ball and putting shims on the piston skirt!!!
https://www.bing.com/videos/search?...E8C85102E6ADBD3E2129E8C85102E6AD&&FORM=VDRVRV
https://www.bing.com/videos/search?...E8C85102E6ADBD3E2129E8C85102E6AD&&FORM=VDRVRV