[ATM] Blocking parts for Polishing

[Alfredo Rainho Neves]

Hi Jeff,

The recipes that you mention is exactly what I am after.  

Thanks,

Alfredo



-----Original Message-----
From: atm-bounces at atmlist.net [mailto:atm-bounces at atmlist.net] On Behalf Of
Jeff Rowe
Sent: Tuesday, September 23, 2008 9:01 PM
To: Alfredo Neves
Cc: atm at atmlist.net
Subject: Re: [ATM] Blocking parts for Polishing

Alfredo;
Many years agoWilliam Marriot posted a link to the list on making 
diagonals, IIRC he mentioned in his post the use of  parafin with pitch 
as his blocking media. I was left with the impression the media had some 
"give" to it. I believe he also stated that folks in the trade guarded 
their recipes. Forgive me in advance if I have misquoted him. Maybe he 
will chime in.
Best
Jeff Rowe

Alfredo Neves wrote:

>Hi All,
>
>I am currently trying my hand at producing a  lot of 10 diagonals. I
blocked
>the parts to a flat pyrex mirror blank with some "Blocking wax" I mixed up
>from rosin and beewax. Unfortunately when I unblocked the diagonals they
all
>came out very astigmatic. I assume that my blocking  wax is the cause. I am
>now temped to use pure pitch so that it flows better. Can anyone give me
>some advice on the best way to set things up for stress free blocking. 
>
>Regards,
>
>Alfredo
>
>
>
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>ATM mailing list http://www.atmlist.net/
>
>  
>

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