Electric Drill Shears Attachment Plate Sheet Cutter Nibbler for Cutting Aluminium, Iron, Stainless Steel, Copper or Other Metal Sheets(0.6-2mm), Saving Accessory Retrofit Cutter

Easy to use

Missing drive shaft "C" clip to hold shaft from sliding in and out binding the driven gear. Machine shaft retaining plate for clearance for "C" clip to rotate. Machined a 0.022" shim for driven gear that had to much play. After tightening to gear nut the gear teeth start to cut into the housing about 0.008" deep. This means the housing where the thrust bearing sit is 0.030" to deep. To bring the cutter blade to make contact with the driven gear face, the adjusting screw was to short, so machined the lock nut thinner. The long rod that only reaches my Dewalt cordless battery case not the handle in the pictures. I am able to cut 0.022" thick copper sheet easily. Poor design. Would not work right out of the box.

Good product

If you need an inexpensive tin shear, and own a cordless drill, this is a decent attachment for light use. Installation is straightforward, just be sure to get the little rod that aligns it positioned properly and the jam nut good and tight before use. It works fine for lighter sheet metal, tin or aluminum used for flashing and trim, that sort of thing. This is not a heavy duty industrial tool for a professional, but rather a tool for a homeowner who may need to cut some trim or flashing around the doors and windows of their house or garage. It actually works quite well, and is amazingly cheap for what it is. I have used it for cutting several pieces of trim and ripped a piece of corrugated roofing steel lengthwise with it, and it is still going strong, but if you have a BIG job, or plan to use a shear a lot, I'd spring for the Malco drill shears. For occasional use, I don't think you could beat it for the price.

Will not cut metal or at least run a straight line on tin.