my main worry is about "checking" as we already noticed eucalypts and acacias suffer a lot from that - we are working most of them green (although we have a couple already cut from last winter that we still didn't try to make joints)
i've seen it written that most problem about checking is about aesthetics, when should i be worried about structural affect?
what is wood-tar? how to make it?
would wax work out? and paraffin? (we can skip a lot of paraffin [and probably mixed wax] from the local cemetery garbage containers)
lin seed oil would be suficient? and burnt car oil (the local farmers nowadays "tradition" to treat wood - it worked quite well on preventing rotting on some exposed wood on our woodshed)?
Basically If it loses its leaves in the fall its a hard wood, if it keeps green leaves(needles) through the winter its a soft wood