MerlinTech wrote:
Invest in some actual honing oil. It will help a great deal with the process. Doesn't smell bad either.
https://goodson.com/collections/grindin ... honing-oilA gallon should do it. Maybe two?
Ordered some.
I also ordered another set of 70 and 150 stones. I'm certain the 70s are glazed and that is why I'd been honing the same cylinder for hours. I switched to the 150grit set and 20-30 minutes later is was ready for 280. I left it sit over night and will measure again today to be sure but its probably done. The shoes on the 150 set just seem kind of loose compared to the the way 70 and 280 sets fit the bore and acted so I ordered a new set of150s too just to be sure and upgraded to 2nd day shipping to keep things moving but I think al it looking well at the moment.
Edit - forgot, I moved the 2 insert screw out away from the flat area....that was in fact causing the out of round I saw the day before. The stones were cutting stupid slow, I used more pressure, that slightly rotated the cylinder into the screw which acted like a little wedge. Removed the screw, cylinder was mostly round again because the stones were cutting so slow not much harm done.