There are 2 messages in this issue.

Topics in today's digest:

      1. Tips on stencil wash-out.
           From: "Paul Stevenson" <p.stevenson@virgin.net>
      2. Adhering stencils to glass.
           From: "Paul Stevenson" <p.stevenson@virgin.net>


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Message: 1
   Date: Wed, 2 Feb 2000 06:57:52 -0000
   From: "Paul Stevenson" <p.stevenson@virgin.net>
Subject: Tips on stencil wash-out.

I wash out sandblasting stencils the same way I wash out screens for
screenprinting, as follows;

Shoot (expose to UV) the stencil in the regular way.
Lightly wash water over the exposed area to 'soften' the emulsion.
Leave to 'sit' for ten seconds, before blasting out with an airline and
water hose attached to a syphon gun.

Blasting at 3 bar and very cold water, the stencil washes out in about 15 to
25 seconds with line-art.  If I use hot water I find the emulsion becomes
too soft and washes out too quick, so you have to work faster.  The cold
water is more forgiving and allows the emulsion to stay in a more 'plastic'
condition, before solidifying.

Hope this is useful to somebody, it took me quite a bit of material to
figure it out because of duff information.

Paul Stevenson

>Engraving
>Gilding
>Signs

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Message: 2
   Date: Wed, 2 Feb 2000 06:57:56 -0000
   From: "Paul Stevenson" <p.stevenson@virgin.net>
Subject: Adhering stencils to glass.

Thanks for your post April, I thought it wiser to share the info, for the
good and benefit of my fellow consumers.

Just to add that the supplier of the resist also supplied me with the
screenprinters pallette spray mentioned in the original post and it cost me
nine pounds fifty pence for the aerosol tin.

I didn't know there was such an animal as RZ-2; is it available by the
quart, or as an aerosol?  What is the recommended retail price?  Is RZ-2 a
solvent- or water-based adhesive?

I'll still continue experimenting April and share the results with the
group, if that is okay with you?

There must be a way to adhere Autotype's Capillex onto glass and use that
for resists, as it is cheaper, but there you go.  It's just a matter of
time, I guess.

If anyone else on the list would like to share some ideas that would be
appreciated too, thanks in advance...

Paul

----- Original Message -----
From: April Sparr <April@rayzist.com>
To: <p.stevenson@virgin.net>
Sent: Tuesday, February 01, 2000 4:19 PM
Subject: Adhesives

> Paul,
> I don't usually reply to posts made to the sandcarving one list,
> because as the host - we like to be just that. Which is why I'm
> emailing you direct. With all you're experimentation with spray
> glues, I could not find a reason why you don't just use the RZ-2
> adhesive... it can be sprayed with an automotive type of sprayer. If
> spray gluing is what you're after, that's what we would recommend.
> Otherwise, happy hunting. We are doing the same & will more than
> likely end up with a special formula for aerosal cans. When that
> occurs is still up in the air, as we are still experimenting.
>
> Best Regards,
> April Sparr
> Rayzist Photomask, Inc.
> www.rayzist.com/800-729-9478