Re: Gum questions - 101

From: Marek Matusz ^lt;[email protected]>
Date: 11/12/05-10:49:15 AM Z
Message-id: <BAY101-F13E915D2332A8309E7CA04BB580@phx.gbl>

Jeremy,
Mine foam rollers are from Lowes, called Shur-line ultra smooth surface. The
are 6" long.
Hope that helps
Marek

>From: Jeremy Moore <jeremydmoore@charter.net>
>Reply-To: alt-photo-process-l@sask.usask.ca
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: Gum questions - 101
>Date: Fri, 11 Nov 2005 11:48:43 -0600
>
>Can anyone who uses a roller give me a web link that points me to the type
>they are using? The first one I tried seemed to make things much, MUCH
>worse than helping at all!
>
>-jeremy moore
>
>>>
>>>
>>> > From: Marek Matusz <marekmatusz@hotmail.com>
>>> > Reply-To: alt-photo-process-l@sask.usask.ca
>>> > Date: Fri, 11 Nov 2005 15:43:29 +0000
>>> > To: alt-photo-process-l@sask.usask.ca
>>> > Subject: RE: Gum questions - 101
>>> >
>>> > On the subject of coating gum.
>>> > I spread gum mixture with a brush and then use a dry foam roller to
>>>smooth
>>> > the coat.I roll in one direction only applaying little pressure. You
>>>have to
>>> > time it just so to get a nice coat. It is easy with a bit of practice.
>>> > Marek,
>>> > Houston TX
>>> >
>>> >
>>> >> From: Don Bryant <dstevenbryant@mindspring.com>
>>> >> Reply-To: alt-photo-process-l@sask.usask.ca
>>> >> To: alt-photo-process-l@sask.usask.ca
>>> >> Subject: Gum questions - 101
>>> >> Date: Thu, 10 Nov 2005 22:17:15 -0500
>>> >>
>>> >> Since gum seems to be the topic of the evening I have a some
>>>questions for
>>> >> our gum nation.
>>> >>
>>> >> 1) My brushes seem to have a dichromate stain built up. What is the
>>>proper
>>> >> way to clean these? I'm guessing a soak in potassium metibisulfite,
>>> >> followed
>>> >> by a clean water rinse, then perhaps a short bath in an ammonia
>>>solution to
>>> >> dissolve any residual gum, followed once again by a water rinse then
>>>a
>>> >> final
>>> >> rinse in hair conditioner.
>>> >>
>>> >> 2) I know that sodium dichromate is rarely mentioned for use because
>>>of its
>>> >> hydroscopic tendency, but compared to potassium dichromate or
>>>ammonium
>>> >> dichromate would it printer faster or slower have a lower or greater
>>> >> contrast than the other two dichromates?
>>> >>
>>> >> 3) Since many gum printers recommend a weak bath of potassium
>>>metibisulfite
>>> >> (1 to 2%), what is an effective and safe way to wash prints after the
>>> >> clearing bath? Should the print then have a treatment in sodium
>>>carbonate
>>> >> to
>>> >> neutralize the acidic pH of the paper? Would the sodium carbonate
>>>weaken or
>>> >> soften the gum?
>>> >>
>>> >> 4) I've read here and there that some printers use a micro fiber
>>>roller to
>>> >> coat their paper. In my experience this simply results in a coating
>>>with a
>>> >> lot of bubbles. Any hints about how to coat with this type of roller?
>>> >>
>>> >> Thanks,
>>> >>
>>> >> Don Bryant
>>> >>
>>> >>
>>> >>
>>> >>
>>> >
>>> >
>>> >
>>> >
>>>
>>
>>
Received on Sat Nov 12 10:49:28 2005

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