Shear sharpening

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We have a Accurshear thats starting to develop a pronounced burr on the metal edges.The backside of the blade hasn't been used so I could flip it and use that, but I would like to sharpen the used edge, there are no indents or nicks in it. Last time i talked to a Accurshear serviceman he mentioned that you could hand file the burr off the shear blade as long as it wasnt to badly damaged. Tho i havent talked to one as of yet.Was wondering if anyone had any advice on this?
Reply:Use a really good file and ONLY remove metal from the narrow cutting faces of the blades maintaining the same slight shear angle,Only remove enough metal to get rid of the dull rounded cutting edge. NEVER  file the flat faces of the blades,When refitting shear blades make sure they are adjusted(by shims or built in jacking screws) to pass each other as close as possible without binding.hope this helps, no doubt there will be several more useful replies,      Cheers  Gordon.
Reply:It is better to rotate the top and bottom blade regularly before you have serious damage to the blade.  If you do excessive damage to the edge you pay for it in lost blade material.  The two Accushears I worked on had four edges you could use before you needed to send in for sharpening.  Also if you have a good shear operator the left hand end of the blade will not be worn out long before the rest of the blade.  A lazy operator can seriously shorten the blade life by favouring the left hand side.  If you have rounding over of the edge something is wrong.  You should have been rotating the blade long before or you are not checking your blade clearance weekly with a feeler gauge all along the blade length.  When you rotate the blade torque your bolts evenly and after the first day of operation check everything including blade clearance and bolt torque.  If you can have one operator-one machine it is considerably more economical than everyone in the shop abusing it and pointing fingers all around when damage is done.... like cutting round bar or worse rebar.
Reply:we use all four cutting edges and send them out for sharpeningDewayneDixieland WeldingMM350PLincoln 100Some torchesOther misc. tools
Reply:Any shear, that is not dedicated to a certain range of sizes,,,,,   should have included, and always there, shims to install or remove,,,   to go from say 16 ga. to 1/2 inch, or more, to provide the correct clearance for that particular cut.  Too big of a clearance, for a particular thickness,,,,  you take the chance of tearing, or jamming, the metal between the knife and the anvil, too little, you might even break something.
Reply:usually you have 4 shear edges and 4 anvile edges.  clearance is the most important thinginsert thoughtful quote from someone else2000 Thermal Arc 300GTSW 3.5 hours1946 Monarch 20 x 54 Lathe1998 Supermax 10x54 Mill2004 Haco Atlantic 1/2" Capacity Lasernot mine but i get to play with it