Uhhm, the Forge-OreDictionary has entries for Wood and Planks, even for STICKS!!! If Buildcraft would use those, like IC² and every other large Forge-Mod does, then it would be possible to craft it using that Wood. And I made my Batbox from Fir-Wooden-Planks, so your argument is invalid.
Edit:
V2.74d:
New Material to build your Super-Safe Bunkers: Tungstensteel! But not just Tungstensteel, VACUUM HARDENED TUNGSTENSTEEL!!! Regular Vacuum hardened Steel, is one of the best Materials one can imagine. Many popular Space Stations have been made of it, like the infamous Death Egg, which fell 3 times back onto the Planet WITHOUT EVEN DENTING the vacuum hardened Outer Hull!!! Now combine that with the hardness of Tungsten, and you get a Material, which can resist explosions like Iridium! But not only that! Its awesome dark Blue look, and the possibility to combine it with Iridium to make it EVEN STRONGER, are perfect for building Bases of it!