Took one of the scrap off cuts and cut a latch out of it after measuring up and determining where the runner bolts would go. Drilled and welded in a threaded pivot pin and a 'hook' point for the spring, also cut and bent a stop. This all probably took up most of my time.
All I had to buy was the runners .... couldn't get the heavy duty alu ones in the length I required, so just got the steel ones that are rated at 45kg on full extension ..... a lot cheaper at only R50.30 incl. for both, so if they're not good enough I can always replace with the correct length alu later.
Anyway, it was only when I got to the point of fitting the runners that I realised I didn't have any nyloc nuts for that small size bolt (will have to get tomorrow), so in the meantime I just drilled the holes a little smaller and tapped threads into them as an interim solution.
Mounted the runners to the side rails and then to the carrier.
All that was left for now was to cut the groove for the latch to locate and I was done for today.
All the brown marks on the steel are just dirt, so I will have to give it a good clean-up before fitting into the van. To fit I will just use Tech-screws ... about four or five per side rail. Also have to still cold-galvanise all my welds, cuts and grinds. Of course I will also still have to make some kind of arrangement to secure the fridge ... for this I have a couple of canopy clips and will use them to make a couple of adjustable quick-release brackets.
Will post more pics when it's completed.
..... You wouldn't understand.... 
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