From: John Murray 
To: Amateur Telescope Makers 
Reply-To: John Murray 


G'day Bob,
        As I said in my post, the temp at night here is getting around 10c. To
me
this is quite cool but I don't know whether the pitch will think that! With
my machine I would imagine an hour or two or polishing would be enough to
warm the pitch up somewhat. From what I understand, machines require a
harder pitch than when hand polishing. Have you found this?

Cheers

John Murray
Whyalla
South Australia
Check our web page at http://astronomy.sa86net.com ATM and M-O-M stuff.

>
> Some of the "conventional wisdom" tends to indicate that the
number on the
> pitch is the basic operating temp in deg. F.  I'm not too sure about that
> but the lower number on the pitch does indicate that it is a softer pitch
> and since pitch is very sensitive to temp, I'd consider that pitch if the
> working temp in the room is going to be very cool.

--- BBBS/NT v4.01 Flag-4