Re: carbon transfer (mainly: digital negatives)

[phritz phantom <phritz-phantom@web.de>]

hi loris,
i think you're right there. i took a second look at the label and it 
says: "technical gelatin: type: 'rabbit skin glue' " and the description 
says it's a hide glue.
i tried varying the sugar content a little - mostly to find out what 
it's good for, because i didn't know what a plastiziser is. sandy king 
said 12.5 gr (50 a litre) in his glop recipe. so i lowered it to 10gr 
and the result was extremely curled tissue. i really had to struggle to 
get the tissue and negative in place. so i upped the sugar again to 15gr 
and the result was completely flat tissue.

phritz

Loris Medici schrieb:
> Hi phritz.
>
> If it's cheap and can is listed under "technical gelatin", then it's not
> "real" rabbitskin glue but hide glue (= very high bloom gelatin?) instead.
> Your relatively high sugar content is already telling me something; hide /
> rabbitskin glue is pretty brittle when dry, therefore you needed higher
> content of plasticizer, right?
>
> Regards,
> Loris.
>
>
> 30 Mart 2009, Pazartesi, 3:45 pm tarihinde, phritz phantom yazmış:
>   
> > kees,
> > because the art supply store i buy my stuff from sells it cheaply in big
> > units. they also have it listed under the name "technical gelatin" - so
> > i guess it behaves a lot like normal gelatin. i haven't noticed any
> > differences to normal gelatin yet. i use it for sizing without
> > hardening. i should probably make a face to face test with some knox
> > gelatin from the supermarket.
> >
> > phritz
> >
> >
> >     
> > > > both are on homemade tissue (glop: 20gr rabbit skin glue + 15gr sugar
> > > > + 3.5gr lamp black (powdered) + 250ml water)
> > > > spirit sensitized with: 2x 4ml per 8x10 (20ml acetone + 20ml 2.5%
> > > > dichromate sol.)
> > > >         
> > > hi phritz,
> > >
> > > why do you use rabbit skin glue instead of gelatin?
> > >
> > > kees
> > >       
>
>
>