[TR] modifying a reamer for carb shaft

[Gary Nafziger]

Randall sent a link to a good article concerning reaming your own carb for new 
bushings for throttle shafts.

One suggestion included grinding the cutting  edges of the flutes on the reamer 
to make them work in reverse.  I'm not familiar enough with reamers.  How simple 
is this?  I'm guessing that it involves grinding one side of the cutting edge to 
make a "burr" on the other side of the cutting edge?  


Is the cutting edge of a reamer sharp and angled one direction (which needs to 
be changed the other direction by grinding?)
Or is the cutting edge of a reamer square with a little angle?  
It looks doable to me and hopefully I can start soon.

gary n.