Re: [ATM] pitch lap question

[Mark Cowan <toolontop@yahoo.com>]

The Acculap (I call it SynthPitch for fun) grades seem
harder than Gugolz to me - I tried various grades and
found the "Medium" was equivalent to Gugolz 64 which I
use for machine work. Works well, doesn't load up with
CeOx so less maintenance, very nice bright polish but
works slower than regular pitch - possibly because it
doesn't load up with CeOx. Doesn't dry out - /this/ is
valuable for consistency.  Smells terrible when you
melt it, though, a chemical back-of-the-nose effect. 

I've gotten some down to "Very Soft Hardness" (kind of
an amusing label) in hopes of trying it for
parabolizing but even that's harder than what I temper
Gugolz to.  It can't be tempered or mixed; the
manufacturer will custom brew a grade but you have to
provide them a sizeable sample of what you want and
I've no idea on pricing.

Mark Cowan
Salem, OR

--- John Graves <jgraves@straight2you.net> wrote:
> Acculap does. There are 10 different hardness grades
> ranging from one
> softer than Gugolz 55 up to one equal to Gugolz 82.
> The one I got,
> labeled Very Firm, is supposed to be the equivalent
> of Gugolz 73. It
> seems extremely hard, but so was the batch of Gugolz
> 64 I just got.
> Working at 79 degrees, the Gugolz 64 was unbearably
> hard. Gugolz just
> seems to be running harder than it did a few years
> ago.
> 
> I've been having some real pitch problems lately,
> but enough is enough.
> Now I'm the proud owner of a Twyman viscosity
> tester. ;-) That will be
> the end of that I hope.
> 
> ----- Original Message ----- 
> From: "Richard Ozer" <rozer@pacbell.net>
> Sent: Tuesday, June 29, 2004 6:24 PM
> Subject: Re: [ATM] pitch lap question
> 
> 
> > Does SynthPitch come in different hardnesses? 
> Recently, someone
> showed up
> > at our workshop with a SynthPitch lap, and it was
> unbearably hard
> pitch.
> 
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> ATM mailing list http://www.atmlist.net/
> 



		
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