not to steal the thread but brownells next month flyer shows how to cut the root 2/3 then heat and bend down then fill gap in and finish.a interesting point,ive been doing them this way for 40 years,i learned from a gunsmith that went to school with the pillars of the gunsmithing world or new them on first name basis.point is back then there were no migs, tigs,or fancy welders he stuck a bolt in the end a wet towel around the face and arced it up with a old lincoln or used ox/act with a coat hanger.now when people talk about welding bolts the young kids would have a heart attack at this method.