LOL - centre stand is next on the agenda, based on Cam's prototype. I already bought material and produced scale sketches to determine pivot position and spring angles. I hope to ensure it holds up properly and locks over centre when deployed. I bought a new welding shield a couple days ago, after I realised I was blinded for the first few seconds of every arc. That might improve my welding. However I must now commit time to garden irrigation, to avoid extreme noise or icy conditions on the home front.