Chopper 2 nwsl5/2/2023 ![]() The reason for the single bevel edge is that a back to back beveled cutting edge causes a thing called back-lash to the work piece and will prevent a straight cut as part of the front of the blade pushes back at the work piece. The front side is flat and flush with the cutting face. On the guillotine cutter, the blade edge only has a bevel on the backside of the blade (the part of the blade facing the operator). Your facing the blade and not parallel to it. The main differences between this tool and a guillotine cutter is that, 1. The ones I used for paper and plastic cutting were 4 to 8 feet long. The blades on theirs are about 12 to 18 feet long. Coors Container uses them for cutting thin sheet aluminum. When paper money is cut to final size it is cut on a guillotine cutter. In industry, they are use for many types of sheet material cutting. The essential parts are all identical to this "Shay Cutter". When I worked in the printing business, we used a machine called a "Guillotine Cutter" to cut paper and plastic. ![]() They were like $250 to $500 dollars but really nicely made. About 25 years ago or so, Division Point Models marketed a real nice all metal one that was about 2 feet long and a foot wide with an anodized aluminum bed that was marked in like one inch squares and had a scale rule attached up by the cutting face. I haven't seen a Shay Cutter since I was in my twenties. Nice to see this great little tool again! Dale Buxton toggle quoted messageShow quoted text It really prolongs the life of the razor blade. The other thing it could use is a bit of self-healing cutting matte that inserts flush into the table where the blade contacts the cutting surface. ![]() This would make for less final sanding of the ends of work pieces. This would insure squarer cuts and eliminate having two cut pieces with a beveled end the matches the double bevel of the single edge razor blade. These blades cutting edge are identical to a guillotine cutter blades single bevel edge. This cutter and the NWSL Chopper could really benefit from a picture framing, matte cutting blade. This so the work piece isn't dragged into the direction of the blade travel, which is usually to the left and skews the cut if the clamp is not holding the work piece firmly in place. There is a hydraulic or electro-mechanical clamp that comes down behind the blade face to hold the work piece in place while the blade powers through it. The lead screw is connected at the front of the machine to a hand crank or electric motor. The metering face (called the "Fence") pushes the work face towards you and the cutting face of the blade with a lead screw and a T-nut that goes in the slot in the table (just like this ones thumb screw). This is so the blade does not bottom out metal to metal and ruin the cutting edge. There is a trough in the table parallel to the blade where a plastic stick is put. Where the blade comes down to contact the table at the end of the cut.
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