I made a heavy cardboard template that was cut out to go over the 2” cold roll. I used the longest arm possible given the amount of stroke the cylinders have. I found these in an auction, so I got them cheap. But for fabricating jobs in my shop it works great. No, I would not recommend it for any kind of production setting, of course. This shear will easily shear 16-gauge x 48” sheets without much drama or bouncing around. The rotating shaft is 2” 1018 cold roll solid. The cylinders are 4”, and the arms are 1” plate steel. I believe this isolates most of the leverage and force to the lower portion of the sheer. These are freestanding and not attached to the top in any way. These are welded to two cross members that attach to the underside of the sheer feed. To reduce stress on the table top and shear itself I made two towers underneath that the pneumatic cylinders attach to. This table top sets clearance with the shear blades. Sometimes on these small shears, pneumatic hydraulic conversions can push the table top out of alignment. I’m sure there have a few of these conversions posted, but I decided to share these pictures because of something I did different on this conversion. This shear was originally a stomp shear which I got tired of stomping on – especially with 16-gauge steel. These are some pictures of my pneumatic conversion of a Tin Knocker 1652 shear which I believe is a copy of a Pexto shear.
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