It's impossible with caster mk1 to make iron plates.

Hi, do you have other mods installed, that change recipes?

Because I can't reproduce this at my end with full bob / angel suite

there is a way to check mods that affect it in any way? in description there is only angels and your experimental mod.

All MK1 buildings are not able to make any plates sadly. There is some patch to remove limit of input items? or allow liquids? to override mod that changes that?

You can see if a mod changes something, on the blue mod names in the tooltip of machine and/or the recipe.

But a easier way is if you can give me a save game, so I can load it up with the exact same mods and settings...

https://drive.google.com/file/d/1Abt2z7aEieoVfiac7pqUs7S5AXCD-mrN/view

looking into this, but I guess I already see a mod in the list that potential change the machines...

flare stack mod?
nah its not that one.

ShinyAngelGFX it is,
its overwrite MK1 from angel with only 3 input pipe connection, no output connection, so the recipe cant work in it.
My mod dosent overwrite the pipe connection on mk1 because in angel the mk1 machine already has an 4. pipe connection as output defined.

I'm writing a patch right now.

Wow... i thought that its just graphics mod and does not have any functions.

So now with the new version 0.18.04 this should work as expected.

Wow thanks, greate mod!

btw.
Would it be possible to make asphalt to work with asphalt roads?
https://mods.factorio.com/mod/AsphaltRoads

you mean my asphalt from Amator Phasma's Coal & Steam? then yes, I will look into it for one of the nex small updates.