XMax250Paul wrote:Nice idea with the box section... any details?
..well buy the issue of twist & go. 

  i started out with a 150x150mm box section @ 18 inches long, i got it from a steel stockholder.. offcut for a tenner,  i used a 20mm holesaw to drill a hole through the box section about 50mm centre from one end.   i got hold of a 20mm x 180mm solid bar and welded it in place,
i got a 155x155 x 4mm steel plate and a hinge and welded them in place to make a cover plate,   i also welded a plate on the bottom but left a gap for any rainwater.
I welded some scrap 10mm bar across the post to secure it the concrete.
got it powder coated then set about digging a hole through the block paving.. with some funny looks from my nieghbour, another story 

 , here it is..
 
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