Wet plates in sheet metal film holder?

[-chrille-]

I am going to modify a sheet metal film holder for wet plate use. Is silver nitrate very corrosive on steel?

The film holder is made of steel, no plastic parts. I am not shure what kind of steel this is but it is thin and seems to be easy to form and weld.

How do I protect the steel against corrosion? Some kind of laquer or silicon spray grease? I dont want something that can migrate in to the collodion layer or on the surface that affect developing. Any ideas?

 

[koraks]

Is silver nitrate very corrosive on steel?

Yes. If the metal isn't painted, simply primer and paint; that'll do the job.

 

[awty]

Usually you remove the film holder and use the plate holder without the film holder, so I’m confused how you will use a film holder.
You will need to keep everything clean whether it's plastic or metal. I use both.

 

[-chrille-]

Thanks. Then I will repaint it when done with modification.

Awty: the film holder will be removed. I am going to drill the 11 welding spots to remove it.