Door makers:
Should a raised panel that'll be about 3' wide be engineered with an MDF core to prevent extreme expansion and contraction/warping? This is going to be a "solid" Sapele door, but I will be making engineered stiles probably with a ply or pine core and 1/4" veneers.
Obviously I'm not saving any time on labor, but this door is going to be a massive 4'x9', so I want to make sure I don't run into any warping/ twisting issues with it.
Jack