how can make in ourself hand made exposing chemical of screen printing?

amilakmg6 years ago
I have very easy exposing chemical making system for quality screen print. Instructions are below...

Ammonium dicromate 10 g
Calatak 100 g
Gelatin 25 g
Hot water (100 C) 100

1. mix gelatin & hot water must be a cream effect
2. mix then with calatak 100 g
3. ammonium dicromate 25g mix with hot water 25ml & add to above paste.
DONE...! and then little bit add some colour for see after expose your screen.

then coat your home made exposing chemical for your screen & try to make your own print...exposing time is normal from your experience....

Amila Chandana.
For more details- amilakmg@yahoo.com

wow thanks for the info.

nfarrow nfarrow2 years ago

what is Calatak?

frollard6 years ago
To the best of my knowledge the photo-resist method uses some pretty specific chemicals - someone correct me if I'm wrong but I think you're stuck with off the shelf products, or using other screen printing methods.