Hi Lads, looks like this post has struck some interest
Jeff, I will post a photo of my mallet ' family' soon Father mallet sounds like yours lol
David Meldonmech, I think the idea of the round head is when ever you pick it up its the right way around , opposed to a square headed one having to be in line, when you use it it does not seem to slip off the chisel top anyway in practice. The shaft does go right through and is glued with epoxy and wedged so not going to come loose, in the photo where it is still on the lathe its the end of the shaft sticking out that the centre is sticking into. Although the lignum is a really hard wood it turns really well, its weird stuff as it comes off like dry wax flakes and leaves a nice dry shiny finish, when sanded it clogs paper up but will brush off the paper. The shine on the head did have a touch of wax on it but it was really that shiny from just sanding with finer grits of paper down to P600. You could turn with carbon tools no problem.
Stig , I think apple wood is also a recognised wood for carvers mallets, I have heard if you want a bigger size mallet a Lignum one gets too heavy and apple is still hard but lighter so you get the right size per weight ratio with it. Its probably got a softer feel to it as you tap I would think.
Arablist, I will be making another so will post pics , I have also made a couple of'brass' that turned out to be phosphor bronze mallets, some say you should only hit the gouges wood handles with wood so clas the brass ones as stone carvers mallets but I think either would do the job myself.
David , The wood is used for bearings and if you look it up on wikipeadia it has been used on the propeller shafts of a neacular submaines as well as many other high tech stuff so seems to be perfect for the job, it would seem it was also used on brackets to hang power lines and after some fire it had withstood heat that had buckled the metal poles it was attached to.............it is an amazing wood and is also beautiful to look at.
I will be making another one soon so keep checking back.