I haven't heard anything bad about them, and they look the part.. it's just one of those 'don't know for sure til you try it' kind of things. I'm pretty sure they'll be fine and I'll break something else long before they're an issue.
strung the video clips from saturday together and tossed it up on youtube. camera angle is kind of weird because I normally a) don't record myself and b) had it in selfie mode trying to see what was going on while I was working. I'll try and do better next time lol
https://youtu.be/SgU17JuiZb4
and last night I worked out the relief cutting process (well, mostly)
https://youtu.be/7eARaRlzdeA
so I knew when I hit up home depot the other day I was looking for adhesive backed sandpaper, and you'd figure that would be with the rest of the sandpaper... but no. so I began to second guess myself (and I was in a bit of a hurry), grabbed some random 3m stuff and a bottle of superglue and thought "what the hell"
turns out superglue and paper do not bond... really at all. I tried several different types and processes, and that dog didn't hunt. so I googled it, re-verified that adhesive backed sandpaper does exist and should be readily available almost everywhere, checked HD's website and found it somewhere completely different.
When I stopped in last night, the front end people looked at me like I was crazy, they'd never heard of such.. so I pulled it up on the website again (And they had a fair amount of it listed online), we went to the bay location listed, and sure enough, tucked in with sander discs for floor surfacing machines, there were 12x16 sheets of said sand paper.
That works much better, and as a slight added bonus, the grit is bonded better than traditional sandpaper. Speed does seem to be the key, if you run your m12 drill on "2" full speed, it will load the paper up in about half a second and then smooth over the abrasives. 1, working up to full speed, seems to work fairly quickly, but I haven't really figured out a mean best time yet, if I can get out to the shop tonight, I'll probably work out a timer and try and finish'er on up, pop the rods and pistons back out briefly to make sure none of the grit got anywhere bad, and do the ol final assembly on the rods and pistons (and then probably also go ahead and button up the bottom end depending on available time. If not tonight, hopefully tomorrow night. lot of work to do, not just parts assembly, but once this part is done and an oil return solution has been worked out, it should start going faster. I need to sit down and work out the fuel pump situation and get those on the way I reckon, will probably do that this weekend or early next week.