OK
Did some more research today.
Hand tool (looks like rivet gun) good for 3mm to 6mm mild steel or aluminium, not real good for stainless steel as most of us dont have the hand strength required. Prices vary from $100 [All Tools in South Dandenong] to $200 [Blackwoods]
Ratchet tool (slightly bigger than the hand tool). This one uses a ratchet action so can do up to 8 or 10mm and is OK for Stainless in smaller sizes.
Starting at $500 [All Tools]
Long handle tool (Bloody long like big bolt cutters) These would be easy to use and the one I saw can do 4mm to 12 mm. But they are big so forget about getting into small spaces. $285 from U2 Industrial Supplies in South Dandenong.
Air Tool Air is obviously going to be good. Starting around $1000.
