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I have a 1x42, its handy for all sorts of small jobs like shortening screws or any other light grinding. For making blades its definitely better than a 1x30 but that still isn't saying much. Bottom line on these little grinders is that the belts are just too small which means they wear out VERY quickly. And, as you mentioned they are usually under powered. I know some guys build them up (I changed the pulleys on mine) but if you're going to do that you should probably just hang on to the money until you can buy something better. I'm not a huge fan of 2x42 or 2x48 grinders either but for a first grinder they are far FAR better than any of the 1" grinders and can generally be had for about twice the price...
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