Help with creating an assembler with an automatic loader output

[redplasticstraw]

Hi!

I'm currently developing a mod with metal casters that can convert molten metal directly into intermediate products. I would like for the assembler to automatically output these products, similar to how the recycler appears to in FFF-375.

Any ideas on how to achieve this?

Was thinking of potentially just spawning a sub-entity on placing the entity in control.lua, but is there a less hacky-feeling solution?