ilford 500 light mixing box and orange filter for de vere 504

[rbrigham]

Hi

I just bought a 504 for b/w and I have a few questions
what is the orange filter for under the lens ?
Mine is broken

The 5x4 mixing box has cardboard inside that bends inward which makes a shadow on the projected 5x4 neg
how can I bend it back
I thought of glue but it gets very hot when the lamps are on

thanks

Robin

 

[Katie]

I would think that the filter would have been red and used to project your image onto paper without exposing it (like a safelight) for alignment, but I could be wrong. It could also be a regular old under the lens filter holder.

 

[mitch brown]

robin
i took the liner out and replaced it with mat board . works just fine , but use 2 ply not 4 ply .
mitch