A Boma

[DaveH]

Had another go. I though you might like to see the set up and how I did it. Even if you don't I'm still going to show you      
I have to say the set up does look a little on the dangerous side and it probably is


The initial set up, the hollow bar is 33 mm dia the spacing between the blocks is 48mm.
   

After a few operations of the jack handle.
   

It was at this stage I narrowed the gap between the blocks to 40 mm and after a few more pumps.
   

It was further squashed (carefully) in the vice and this is what I ended up with.
   

Not too bad

DaveH