Have got the flat bar chopped up into 112mm lengths and made up a drilling jig to make the holes in the pieces.

Lots of flat bar pieces

Drilling jig for making sure holes are in the right place

The stack for one track

Cut out the jig for welding the plates to the chain and started welding. each track is using 80 pieces of flat bar, these are not light tracks :)

 

Jig to hold flat bar in correct place for chain to be welded to each link

Nate Sitting next to one complete track, 3.08mtrs (10foot)

One track rolled up ready for storage

 

Now to make the other one :)