[TheForge] Stempeling info needed:warped

[Paul]

> Bob Ehrenberger wrote:
>> While doing some repair work on my power hammer yesterday I was concerned
>> about the loose fit of a couple parts that I needed to weld.  Being that 
>> the
>> positioning of these parts is critical to the opperation of the hammer I
>> didn't want to leave the alignment to chance.  So I stempeled the inner 
-->snip/
Hi Bob
Sort of a warped corollary to stippling is 'golf balling'. In another 
life I raced motorcycles... or tried to at least.
In an effort to improve the engines we used to port the 2 stroke pistons 
and then 'golf ball' the piston skirts by drilling pock marks into them 
to reduce the contact area in a effort to reduce the drag of the piston.
This was accomplished by pecking the surface with a drill, not to raise 
the surrounding area as in stippling but to reduce the amount of metal 
in contact with the cylinder wall and help hold oil. Don't know if it 
helped win any races, but they looked cool.
I have used stippling on a competition pistol for both 
decoration/practical use  on the front and back strap of the grip, and 
functionally on the slide surface of the frame to reduce the side play. 
I used an automatic center punch and a lot of patience to stipple the 
grips. I also hid my initials in the stippling. Sort of my version of 
steganography.

Paul Sperbeck  WB9HCO

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