Re: gum printing and sodium di

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From: pete (temperaprint@blueyonder.co.uk)
Date: 02/24/03-01:02:47 PM Z


My limited experience of it is it stains very badly. This may be because it
is very strong I think it is possible to get a 60 to 70% saturated solution
compared to a 20 to 25% with amm and a approx 10 to 15% with pot. You can
also use chromic acid but this is a real NO NO from a safety point of view.
I certainly would not sprinkle it on my fish and chips %-<.

Pete

> Steve Bell wrote:
>>
>> By the way, a quick question. i read somewhere that sodium dichromate can
>> be used to make gum prints, has anyone ever done this? does it work? any
>> notes you can share with us?
>>
>
>
> It's deliquescent (meaning that it soaks up water and gets all wet and
> messy) I assume that's the reason no one's ever used it much.
> kt


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