I haven't removed a ridge in many years, last I recall using soluable oil and water mixed on the ridge for cutting.

Anything change in the last 15 years?

 

i've done it dry for the last "couple" of years. my reamer has a carbide insert. never had any problems or done any harm that i know of.

 

Hmmn...thanks ede.

Mines just tool-steel, shouldn't make much difference.

BTW, I used my TIG on that crack I had, I forget the type of rod they gave me...but anyway, I threaded in a fitting and did a few hot/cold cycles on the head and fluxed it, seems to be fine so far.

Thanks.