My head porter and I developed this tool to keep all valve job bowl cuts identical. Very simple to make and quickly scribes exactly where to make cuts. Scribe is made from a carbide point from pocket metal scribe. It is epoxied into a drilled hole in the adjusting screw. An assortment of cut valve stems allow the tool to be used in variety of different guides.

Eric Gartner
Performance Off Road
Shadyside, OH
July, 2019