It was very supricing for me hanging on WLO DB to discover that i can hame aliminium or hard aluminium plates with wood. Its a trick of the game that Airship steer (made from rope saw) is aluminium.
For 1 Airship steer u need to have 2 lauan wood and 3 original rubber. And need to wait 8 minutes to build it. Then when u compound it with something rann 4-5 u can get aliminium plate.Or if u have basalt, obsidian or huge hands u can get hard aliminium plate.
U can also make high rank stone ( i mean 6 7 or 8) wich organick muck. Compounding muck + muck will give u common stone. and then compounding stone + stone will increse the rank. That way u can het a lot of hard alu plates. It will still take a lots of time to build this airship steer but its still better than minin aluminium ores. For 1 day i could mine onli 20 of them i gueess. :)
So good luck :)
and there is some compounds for it
http://wlodb.com/items/273