A few nice grinding stainless steel images I found:
the grind
Image by legdog
so how long did it take to build the pyramids?
IMG_20101230_162904.jpg
Image by jonno85uk
Mid-pipe welded and fitted.
Decided to grind and sand the welds off, mainly as I failed to get a neat weld all the way around. One-handed welding is awkward; really could have done with a proper welding mask.