Hey guys, I've read a bunch of the FAQ / watched a few videos on the process and decided that I want to try maintaining by blade using a strop + paste & a naniwa 12k stone.

I have a Thiers-Issard blade (picture below)


I have read a decent number of "first-time" honing posts where, after using the 12k stone, the blade is actually much duller and the bevel is messed up.

I guess my question is, how do I know if my factory bevel is at the correct angle for me to start honing by blade on the 12k stone? I was planning on NOT using tape on the spine, but I can if needed. I just don't want to ruin the bevel since I don't have any other stones besides the 12k (i.e. I don't want to completely re-make the bevel) - any suggestions?

ALSO - I have also read some of the stones do not come perfectly flat from the factory and may require some tweaking before using on the blade. Is there a cheap way to do this? I don't really have the budget to go and buy another expensive tool.

I apologize if these answers have been answered already. I looked briefly but did not find any specific answers.

Appreciate the help!