Foam blocks that sit perfectly on the inside of the A4 and A3 frames for use during screen exposure.
Foam block measurements:
A4 Foam block: 23cm x 33cm
A3 Foam block: 33cm x 44cm
Both are 6cm thick.
Use the foam block to keep the screen flat to the transparency, use a piece of glass above the transparency to keep the transparency flat to the screen.
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