<VV> Removal of Casting Flash

[JVHRoberts at aol.com]

It'll be VERY slow. The trick I came up with is an air chisel. I made a  
blade out of tool steel, with a VERY square and sharp end, just wide enough to  
fit down between the fins. I brazed it to an air chisel bit, machined to take  
it. Worked like a champ, and fairly fast. Required periodic facing to keep  the 
square end with the sharp corners, but I totally deflashed a pair of 140  
heads in less than an hour. Oh, and wear hearing protection. The air chisel is  
loud enough, but the ringing of the fins was worse! 
 
John
 
In a message dated 7/12/2005 10:09:15 A.M. Eastern Standard Time,  
vairmike at sbcglobal.net writes:

I've  heard lots of suggestions over the years about how to remove the 
flash in  the heads. One idea I've wondered about but never heard is sand 
blasting  (after the passage is partially opened). Would this work? I 
haven't tried  it yet. It seems like this would clean and smooth with 
much less risk than  saws and drills.

Mike Kost
Show-ME Corvair  Club