[GreenKeys] print hammer

Bob Camp Bob Camp <[email protected]>
Sun, 24 Aug 2003 15:46:57 -0400 

Hi

Thanks for the quick reply. Sounds like Viton would be a good starting point. 

It would be nice if we could find out what the durometer of the original material was. Given that all the pads in existence now have converted themselves to silly putty that may be hard to do directly. 

    Take Care!

        Bob Camp
        KB8TQ


  ----- Original Message ----- 
  From: [email protected] 
  To: [email protected] ; [email protected] ; [email protected] 
  Sent: Sunday, August 24, 2003 2:25 PM
  Subject: Re: [GreenKeys] print hammer


  Bob & Group,

  I don't have anything newer than a 28 so don't have a clue as to dimensions.  The original material was most likely neoprene for which effective specific adhesives are available.  However, given hot oil as the operating environmental conditions, I think Viton scores highest on the Parker chart.  E6000 will bond it to steel or aluminum.  Available in several durometers, of which 70 Shore A is or used to be common.

  In a message dated 8/24/2003 1:15:11 PM Central Daylight Time, [email protected] writes: 

    The questions:

    What are the dimensions of a "real" print hammer pad?

    What's the right material to use (need one that's soft enough and holds up
    to heat and oil) ?

    Given that information the rest *should* be fairly easy.




  73
  Robert Downs - Houston
  <http://www.wa5cab.com>
  <[email protected]> 


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