There is 1 message in this issue.

 Topics in today's digest:

      1. Re: reproducing photos on stone and glass
           From: "Collette" <collette@xxxxxxx.xxxx


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Message: 1
   Date: Sun, 25 Jul 1999 19:55:56 -0700
   From: "Collette" <collette@xxxxxxx.xxxx
Subject: Re: reproducing photos on stone and glass

Hi Dieter,
I haven't done photo reproduction on glass yet, but some of our artwork uses
fine circles, lines or dots to achieve the same effect.  The halftone
screens I've used in printing on other media were acetate sheets with fine
patterns on them.  You put them over your mask while exposing, and the
interference patterns that result become the halftone pattern.  These were
darkroom screens, but I've seen some made for copiers.  I believe that you
are right about the "screen" figure being dots per inch.

For mask material, we've settled on the Rayzist SR2000, which is blue and
has an acetate backing.  We find it washes out faster, and it does not
require refrigeration.  It is supposed to last for over a year, but we never
have any around that long.  We find that Rayzist products do just what they
claim.  We order from them by phone on a regular basis.  Last June they lost
an order, that was straightened out by phone too.  There was no confusion,
double-billing, etc.

After using shower heads for several years (and even a sprinkler once) we
broke down and bought the hand washer.   It was definitely worth the $30 or
so.  There is still some "technique" involved, as I found out yesterday by
ruining a couple of square feet of it.  The longer it stays wet, the more
likely it is to rip up with the spray.  The method that works for us is to
hold the washer close (one inch) until the washout is nearly complete, then
back off a little (to maybe four inches) while the last bits fall off.  The
process takes less than a minute.

The glue (RZ-2) is hand applied with a foam sponge brush.  We buy it by the
quart, and dispense it in squeeze bottles.  After working out the blasting
distance for our pot and nozzle we have very few blow-outs.

Have fun and post the results!

------------------------
Collette & Rod
Christel Illusions
Ancient Arts Studio
Fine Art Glass Etching & Stained Glass
collette@impulse.net
---------------------------------

"He is your friend, your partner, your defender, your dog.  You are his
life, his love, his leader.  He will be yours, faithful and true, to the
last beat of his heart.  You owe it to him to be worthy of such devotion"
Anonymous
-----Original Message-----
From: Dieter Hager <WolfDHager@infocanarias.com>
To: sandcarving@onelist.com <sandcarving@onelist.com>
Date: Saturday, July 24, 1999 3:21 PM
Subject: RE: [sandcarving] reproducing photos on stone and glass


>From: "Dieter Hager" <WolfDHager@infocanarias.com>
>
>Steve, thanks for your input. What do you mean by using a 75 mesh halftone
>screen?
> Is it the resolution?
> It´s been quite a few years since I used Aicello photomask, when the topic
>was fairly new. I remember having a few problems with the washout, also the
>glue application had not been developed as it probably is today and the
>shelflife was relatively short.
>
>I would be very grateful if you could answer me the following questions:
>
>1. which of the Rayzist photomasks do you recommend for photo reproduction?
>
>2. which form of glue application and
>
>3. do you or anyone have any experience with the Hand Washer.
>
>Of course any other tips are highly welcome, like photo cleanup, etc.
>
>(I did try to get direct information from Rayzist by e-mail in January, but
>never received a reply).
>
>Thanks, Dieter
>
>
>> De: Stephen Pinn <steve.pinn@pinncorp.org>
>> A: sandcarving@onelist.com
>> Asunto: Re: [sandcarving] reproducing photos on stone and glass
>> Fecha: sábado 10 de julio de 1999 1:58
>>
>> From: steve.pinn@pinncorp.org (Stephen Pinn)
>>
>> Dieter, I have done this on several occassions.  I scan the photo into
>> Corel Photopaint.  I then print a negative image using 75 mesh
>> halftone screen onto an acetate film.
>>
>> I then use this film to create a photomask, understand that the small
>> dots of the halftone will be very fragile when blasting.  I blast very
>> lightly the fill in with gold wax.
>>
>> Steve
>>
>>
>>
>> On Fri, 9 Jul 1999 23:51:51 +0100, you wrote:
>>
>> >From: "Dieter Hager" <WolfDHager@infocanarias.com>
>> >
>> >Hi there,
>> >
>> >I would like to reproduce portraits on stone and glass.
>> >
>> >Can anyone please shed light on the proceedure.
>> >
>> >Thanks in advance,
>> >
>> >Dieter