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Paint residue

Posted: Tue Aug 15, 2017 9:14 am
by Marblemad
Can anyone help please?
I am using acrylic paints which are suitable for leather and having problems with the stronger colours such as black,red and blue
I use carrageenan lambda as my floater solution and when I take out my leather from the marbling tray those stronger colours cling to the carrageenan
I am forced to leave the leather until the colours are set as if I rinse straight away some of the colours wash out leaving it very wishy washy
This means that the excess colour which is mixed in the carrageenan is washed off I am left with patches of sludgy colour over my pattern which really spoils everything
I have tried at least 6 different brands of paint and have also tried using the strong colours at the beginning and at the end with improvement
I end up having to do a second marbling to try and cover the mistakes which is not great
Thanks in anticipation

Re: Paint residue

Posted: Mon Aug 21, 2017 9:53 am
by Milena
Hi Cheryl
There might be a problem with your leather being unable to absorb those finicky colors. Leather has tanins and oils that act as a resist and you didn't state if you're applying a mordant to the leather first. If so, perhaps you need to give the leather a light sanding to hold the mordant, which will, in turn, hold colors to the leather. However, I've never heard of only certain colors not being absorbed by leather. Acrylics tend to sit on the surface on which it's applied. OK for paper, but leather is tricky. You might want to switch to a dye rather than paint.

Re: Paint residue

Posted: Fri Aug 25, 2017 2:16 am
by Marblemad
Many thanks for your reply
I have used alum but will try sanding it first and use alum after that
Fingers crossed