On 05/09/2016 16:32, Tim+ wrote:
Mike Perkins wrote:
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:

http://www.screwfix.com/p/deta-galva...ck-of-10/1946j

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!


Are they allowed a hole in the middle?

https://www.ebay.co.uk/itm/271233181310


Most certainly a hole but fear the ones you found the hole will be too
big to be of use.

I did find:

http://www.ebay.co.uk/itm/M12-x-50mm...-/281093811226
which is similar but has a M12 clearance hole rather than M20 so
suitable for welding a 13mm/M13 nut to.

I did have a further look and found some M10 x 50MM dia x 1.5mm thick.
The conduit lid is 0.6-0.7mm so given the reduced diameter and double
the thickness I believ it will be rigid enough and have the right feel.

Many thanks.

--
Mike Perkins