When your photoresist arrives it will be in a shipping tube that looks like this.
You can safely open the tube. The resist is wrapped in 6 mil black polytube.
The resist is packed in the black polytube.. Do not open this until you are in a UV safe environment.
Note the light blue color of the reisst. This is due to the plastic coating on one side.
Prepare a clean printed circuit board to the laminate the resist onto.
Cut a piece of resist from the roll just a little larger than the board.
The resist is laminated to the board with pressure and heat. I used a GBC HeatSeal H200.
The resist is covered on two sides. One side is plastic and the other side
is mylar. You want to remove the plastic side. The plastic side has a duller appearance
than the mylar side. It can be tricky to remove the cover. Some people use two pieces
of tape to pull the pieces apart, but I just use my fingernails.
To run the board and resist through the laminator you need to place it on a carrier.
This keeps the resist from sliding around. Also if you have any overlap, it will stick to
the carrier and not to the rollers.
Feed the resist through the laminator. I run it through three times
Be careful. The carrier and board can be rather hot when it comes out of the laminator.
I made a mistake. I did not think about the resist stuck onto the other side
from a previous test. I will have to start over.
No problem. Just soak the board in water with some washing soda for a few minutes.
It will dissolve no problem.
After repeating the previous steps and using a clean carrier, the board looks much better.
Because of the overlap, the board is stuck to carrier. Just cut along the edges with knife and it is free.
Store the board in a light proof container or bag until you are ready to expose it.
