Steel cutting method

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And it takes me about 20/25 seconds with a new blade and about 25/30 seconds with a half blunt blade to cut through a 25x25x1.6mm square tube,dead easy.Now I tried out a sabre saw,nowadays they are called reciprocating saws,(not a jigsaw),it took, with a new blade about 1min 40 seconds but did make a surprisingly accurate cut.I have cut 50x50x6 angle often with this,slow but sometimes very handy when nothing else will do the job.So a simple hacksaw will be hard to beat.I found in an old Mechanics Illustrated book(1968) a sort of a home made power hacksaw using a sabre saw.roughly,2 pieces of say 200 x40 timber ,one cut about 800 loa and the other cut about 600 loa were hinged together,with 2 "saddles"holding down the saw into position on the top board (600) while at the blade end of the bottom board a machine vice held the steel tube.The weight of the saw gently lowered onto it makes the cut.I have no idea if this works but it looked like it may do! David