Re: [ATM] pitch lap question

["John Graves" <jgraves@straight2you.net>]

Mark,

I've been exchanging some emails about this with a representative at
Salem Distributing for the past few days. According to him, you actually
can mix grades of Acculap to achieve a different hardness level.

He writes, "The Acculap can be softened by blending with a softer grade.
I have been told that the hardness will be linear as 50/50 mix would
yield something very close to the middle. The viscosity would not be
linear when blended according to the manufacturer."

Neither he nor I fully understand the distinction about the response of
the hardness vs. the response of the viscosity when grades are blended.
He is checking with their resident chemist to clarify this further and
will be getting back to me. I'll pass on the information when I get it.

John

----- Original Message ----- 
From: "Mark Cowan" <toolontop@yahoo.com>
Sent: Tuesday, June 29, 2004 10:11 PM
Subject: Re: [ATM] pitch lap question


> 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.

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