CHEERS,
we were very proud of it, my dads still sending out pictures of it, has shrunk a fair bit though now, one of the reasons we did the sloping sides.
difficult to say how much wood went in as we got all the timber as rough cut lengths, it was four van loads though so a lot of wood. there was one dumpy bag full of sawdust after I’d cut it all up. Bases diameter is probably pretty close to 3m.
Also we didn’t really have any system for filling the inside went for the random approach again this was to try and accommodate the shrinkage and not loose any of its structural strength.
hope this helps
Sam.