I am developing a new hybrid AM process than combines FDM and lost foam casting.  This is the basis of my ongoing PhD work and startup company.  I also do consulting on a range of items.  

If you just want to chat the following are good: Metallurgy stuff in general including: Metal 3D printing, Casting, Heat treating, and Machining. Business things: forecasting, marketing, supply chain, quality (incl. Nadcap). Other: SBIRs, wood working, printing for Toys for Tots.