Re: frame shop glass = float glass

Hi,

I don't know much about glass but the names of two kinds of different
glass have been used on this thread, namely "Plate" glass and "Float" glass.

Could somebody take the time and explain the difference between the two.
  It would be much appreciated.

By the way, I remeasured the piece of glass in my 8x10 holder and the
thickness is a hair over 1.5mm, so probably 1.6mm, well within the
parameters that someone posted, namely between 1.4 and 1.6 mm.

Cheers,
Bogdan

Robert Newcomb wrote:
> Well cleaned smooth glass. May have to sub with a thin coat of gelatin
> that has been harden, then coat with emulsion.. Could also use albumen
> as a sub - I think.
> Robert N
> On Jun 22, 2006, at 10:14 PM, Murray Leshner wrote:
>
>> I know more about frame shop glass than plate glass...I only order
>> 'plate' glass in the form of 1/4" mirror for people who don't like
>> the thinner kind.
>>
>> The 'brand name' glass I get in boxes is float glass...rarely, one
>> finds a spot of tin (the glass is, or at least used to be, floated on
>> molten tin) on the surface.
>>
>> Re: Flatness...I have made ground glass with it and never noticed
>> anything 'funny' with grit about 500 or coarser. However, I tried 5
>> micron ( ~1000 grit ) Aluminum Oxide and was utterly frustrated with
>> the 'waves' or ripples that were in the glass.
>>
>> Say, does one put emulsion on smooth glass, or etched/ground glass
>> for negative plates?
>>
>> Thanks
>>
>> Murray
>>
>>
>>
>> Yahoo! Sports Fantasy Football ’06 - Go with the leader. Start your
>> league today!
>
>
>
>

-- 
________________________________________________________________
   Bogdan Karasek
   Montréal, Québec            e-mail: bkarasek@videotron.ca
   Canada
                   "I photograph my reality"
__________________________________________________________________