Cushions came from an eBay replacement cushion store ill find the link and post, same for the decking. Re the decking search local as well the postage can be excessive! will post the plans once finished no problem.
Flattened all the external welds in my lunch break today. Actually took longer than I thought, kept spotting ones I missed! I used my Dewalt flex volt grinder and managed it on two batteries and 4 flap discs. Covered all the welds in some galvweld. Waiting on the decking delivery which hopefully will turn up today so can get the brackets for it attached then the frames will be ready for paint.
Decking turned up, working away at the moment I'm told it flexes over the span of the 3 seater. This is why I was waiting for it before finishing the frames to see how much support they will need. Will probably go with 2x 20mm box supports equally spaced for the base seat.
Waiting for some stainless fixings to attach the boards to be delivered so used an hour this evening to knock up a matching coffee table with the scraps left over. I had to join a few lengths together and adopt a different leg design as i had no more 40x40 but it looks in keeping.