I'm trying to source a steel disk of 50mm or slightly greater where I can weld a nut in the centre and retains an element of rigidity.
I'm currently using:
really its too large a diameter though not a serious issue but is too thin where it distorts badly whilst welding a nut in the centre.
Are there any off-the-shelf sources I can obtain a couple of these that are 2-3mm thick? I've run out of ideas!