I’ve been researching various methods of rapid prototyping. So far I have used FDM to create the parts for the coil winder, including the bobbin. I’m leaning towards using SLA to fabricate the chassis itself. SLA offers the largest build envelope (20″ X 20″ X 20″), and new resins are strong and heat resistant.
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Prometheus Fusion Perfection 
the Viper pro offers a build envelope of 25x30x14. there are number of resins that would fit this application depending on strength requirements and heat resistance. Urethane may also be a solution depending on budget