Here's the result of the glue up question posted earlier.
Targeted result: Minimize snipe and provide a longer, flat bed for planer.
I used a 1/8" whiteboard glued on to a 1/2" birch ply panel. I constructed a sort of tortion like rib support at each side of the planer in/out feed side using 1/2" birch panel on 2" aluminum screen enclosure rib then a bottom panel of 1/2" birch. The 2" extruded frame plus the 1/2" ply panel is precisely the height of the planer center bed. This was my first reason for using the alum frame but then I realized that the extrusion made it very straight in all directions.
The base is 3/4" oak ply and is screwed to the steel base (contractor saw base)
The planer is leveled and bolted to the 3/4" oak ply.
A level placed on the table has no clearance anywhere along its length. The bed is flat. I will be watching the 1/8" fiberboard glued to the 1/2" ply to make sure it does not warp. As you can see I bolted the bed to the alumn ribs at 2" OC in 3 rows. Hopefully this will keep it from moving or warping.
Unforseen results: The duct for the dust hood needs to be flexible or expandable to allow for raising and lowering the cutter head. I hadnt used the planer since I made the hood and did not plan for the raising of the head. Live and learn.