[TheForge] Stempeling info needed

[ries]

I have seen this done in a variety of fields, from machining to tool  
maintanence- just never heard it called Stempeling.
Might be a regional thing- The United States is actually about 5 or 7  
different countries, with different regional dialects, traditions, and  
techniques.

It is common for machinists to do this on quick and dirty fixes, but  
usually it more a mechanics trick. I have seen it on auto parts, that  
were repaired by shade tree mechanics.
Machinists will usually go for a more precise fit, and do a heat/cold  
shrink.

Carpenters used to do this to adjust the angle of a dropped framing  
square.

I think its one of those "tricks of the trade" that is seldom  
officially acknowledged- I have a pretty big library of books on  
blacksmithing, machining, fabricating, welding, and metalshaping, and  
I cant recall seeing it in any of em, but most good metalworkers I  
know intuitively use this trick from time to time.

ries

On Apr 23, 2009, at 8:38 PM, 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 part
to tighten up the fit. It worked very well and the parts had to be  
driven
together which removed any doubt about the positioning.

I was talking to friend about the project later and was surprised to  
find
out that he had never heard of stempeling. So last night I spent quite  
a bit
of time searching the web for more information on stempeling.  To my
surprise I didn't find anything on it.  The closest I came was a site  
in the
Neatherlands where they were doing decorative stamping. It thurns out  
that
stempel is the Duch word for stamp and almost every link took me to a  
sites
in the Netherlands.

So do any of you know of a site that talks about using a series of punch
marks to tighten up the fit on parts?  I was under the impression that  
it
was a common practice in gunsmithing.  Do I have the right word for the
process?  Maybe it is known by something else.

My project is done, but I would like more information on the process for
future use.

Robert Ehrenberger
Shelbyville, Mo.
eforge at centurytel.net


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Ries Niemi
Industrial Artist
http://www.riesniemi.com/