sardine
Member
- Messages
- 3,660
- Location
- Buckinghamshire
Some HGV exhaust pipe , cut to shape & size . Perhaps a visit to a scrappies is in order. Would it really hurt if it was stainless steel & the soil fairly free of stones / rubbish.
Maybe even buy some tube on eBay or cheaper ask on your local freecycle , face book social group , " Does anyone have a broken handled rabbiting/ post hole digging spade ? ". Have a look on a car boot or in a junk shop for one as well.
I did some Googling and found out that scuba tanks are made from EN19 steel, there's a diving shop with a stack of failed cylinders round the back, I reckon this could be my materiel, depends how thick these tanks are.
I wonder what steel grade Calor gas bottles are ?