I built this workshop using green glass for the pipe and corkscrew, DFHack was very upset with me. DF hack also did not specify that a corkscrew specifically was needed, only a "trap component"

@geg
The labor associated with working on the sieve is pump operating.

What labor is used to operate this workshop?

I had the components in green glass. now I've made them in gold and I could use those. the green glass ones did not show up as an option when picking materials

@LennaB
Maybe you have crafted the components out of wood?
The Magma Sieve can only be build if the components are made out of inorganic materials, so anything that isnt wood.
So if you have that it should be buildable.

As to why Dwarf Fortress tells you that it needs to be rock when it isnt even possible to craft those, I got no clue.

when I try to build the magma sieve I get the message that I need a rock enormous cork screw and rock pipe section, but I can't find a way to make those things in rock. I do have enormous cork screws and pipe sections in other materials. am I missing something?

now do one for Minecraft and call it Magma Steve