Re: gum mixes
- To: alt-photo-process-l@usask.ca
- Subject: Re: gum mixes
- From: Guido Ceuppens <altguido@gmail.com>
- Date: Thu, 03 Jan 2008 16:08:21 +0100
- Comments: "alt-photo-process mailing list"
- Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com;s=gamma;h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references;bh=QTwC+jIGL2tXrRYnEJxAvZCOi2cSAn3G/kGJmCFId1o=;b=rMFjYyySCgaIN/oySx6QdqXz0pZ+zMPILPlErd4bCzP2GVmzE1J8CxVKPcUn/U6xX3pbk9ZZQUyIiCUzj8VQyLVNx6wN/wjCDUt9S+yK98nlb7yFeOf0k4LYsofnqAwUNOQMR1vfVc7QvTyTBmiVEfRCd/t2QP6ItARGNIY89fo=
- Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma;h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references;b=HwXfXjWTLiOgJbnoxU+4qDydHFgkNKqk2FTofGTJ2022SAxEFeqtPHteDTCjwEAUgQ9fR2LdAd1all4V7yqPGlvjU1gMd6vFoZrzbC48bLFS6c2FWGHtrxnrs+ILKyVfisaMtGPwYz0ryjB4m4ydSq4D3PDT35wK1CEiWdZ5HZE=
- In-reply-to: <00cc01c84e14$367a5b40$a15dc844@christinsh8zpi>
- List-id: alt-photo-process mailing list <alt-photo-process-l@sask.usask.ca>
- References: <C3953B52.BBED%henry.rattle@ntlworld.com><001d01c84641$f0c8f720$a15dc844@christinsh8zpi><25E8FFA1-0647-4E94-A4F0-3A22FABA65CF@zeelandnet.nl><00cc01c84e14$367a5b40$a15dc844@christinsh8zpi>
- Reply-to: alt-photo-process-l@usask.ca
2008/1/3, Christina Z. Anderson <zphoto@montana.net>:
Dear all,
Guido, same thing--do you use
that little potassium dichromate in your mix--essentially 1-5 parts gum to
only 1/2 part pot di? If I have anyone's info wrong, let me know.
Chris
Christina,
Sorry probably
expressed myself wrongly:
I make a stock mixture of 1 part (gr)
watercolor paint to 6 parts (ml) gum. This
stock solution is, before use, diluted with
up to 4 parts of gum – or used as is. Sensitiser (saturated pot
bichromate) is added at a ratio of half the
total volume of the paint/gum mixture.
I use a sun bed,
tubes 20 Cm's from the paper, and exposure is between 1,5 to 4
minutes.
Guido