I think the wood is dense enough to sink. woodcarving mallet, almost ready made. But splits easy I think. I was told by a marine fitter they used that wood to make bearings. My dad used to work somewhere in Glasgow and he could bring off cuts home for the fire, burns like billio. He made some rabbit bookends out of it, the rabbits one sitting up and one crouched down were cut out like on a bandsaw. He had used brass nails as eyes. he said he kept splitting them putting in the nails. Railway sleepers and fenceposts were shipped into this country from Australia, by the ship full. A very good turner I know, in fact I bought his old lathe had a pile of sleepers he was going to make steps from in his garden. He was very sceptical when I told him they were Jarrah, a hard oily red coloured timber.