Curious about the mention of Lyptus above, I did some investigation. Lyptus is actually a hybrid of two varieties of Eucalyptus grown in Brazil. It is apparently denser and also cheaper than Rock maple and quite stable for woodworking/milling. Even denser than Lyptus, and slightly more expensive than Lyptus and Maple is White Oak. I am attaching below some density and pricing info for different kinds of wood. Has anyone experimented with them in platforms?
rock maple
Density: 630
Cost 6/4 $4.80 board ft.
Cost 8/4 5.24 board ft.
Lyptus
Density: 650
Cost:
6/4: $3.94 board ft.
8/4: $4.02 board ft.
NOTE: Most highly recommended for stability, ease of milling, etc. .
red oak
Density: 630
Cost:
6/4: $4.25 board ft.
8/4: $4.78 board ft.
white oak
Density: 680
Cost:
6/4: $4.48 board ft.
8/4: $4.98 board ft.
pecan
Density: between red and white oak.
Cost:
8/4: $5.15 board ft.
Ipe
Density: even higher than White Oak.
Cost: $2.03 approx per board ft.
NOTE: Ipe may develop cracks.
rock maple
Density: 630
Cost 6/4 $4.80 board ft.
Cost 8/4 5.24 board ft.
Lyptus
Density: 650
Cost:
6/4: $3.94 board ft.
8/4: $4.02 board ft.
NOTE: Most highly recommended for stability, ease of milling, etc. .
red oak
Density: 630
Cost:
6/4: $4.25 board ft.
8/4: $4.78 board ft.
white oak
Density: 680
Cost:
6/4: $4.48 board ft.
8/4: $4.98 board ft.
pecan
Density: between red and white oak.
Cost:
8/4: $5.15 board ft.
Ipe
Density: even higher than White Oak.
Cost: $2.03 approx per board ft.
NOTE: Ipe may develop cracks.