Hi All - I'm replacing 12" ceramic tile in my kitchen. My fiance had my stepson rip up the old tile and told him not to worry about damaging the plywood because "we're just cementing over it anyway". Now there are some good-sized chips in it. And I'm having trouble scraping up the mortar without causing further damage. I'd rather not replace the plywood if I can get away with it, as I'm under the gun to get my house on the market. Can the chips be sanded or filled in? If so, does anyone have any helpful hints on how to get the mortar up? I just found out that there are such things as chipping hammers and power scrapers. My old man has an air compressor, so the chipping hammer might be an option. I didn't find out much about power scrapers. Are these suitable to use on plywood? Thanks in advance for your constructive replies!