Sure. I'm just used to people either making a two part silicone mold for the wax (print your positive, mold it, cast your wax, mold in plaster/sand, cast in metal. downside is you have to factor in 10-12% shrinkage all told.)
or doing lost PLA (one of the more common filaments these days, happily burns at the temp liquid metal pours at). Seeing printing in wax is just kinda neat.

*a quick google later*

Wow, and it's only $50/kg. that's not terrible. I'll have to try it once the weather dries up enough I can put my forge outside again.

--
-Pasha (jesus this .sig is evergreen for me)
"Don't change the subject"
"Too slow, already did."