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In mere seconds, the friction from the cutting edge had heated the cutting surface and spattered molten metal on my wooden deck. The industrial design is intuitive and quite frankly, amazingly well thought out. In the end I had a very clean product that only required a bit of polishing.I would highly recommend this tool as it is an absolute steal at under $150 and is amazingly capable with many different abrasive disks available. I have yet to need to run this up to the rated maximum speed.I'm glad I practiced using this tool on an old computer case as I did not realize it was powerful enough to melt the steel case. I purchased a factory reconditioned 6154-20 in reasonably good shape several months ago and it has performed flawlessly on many tasks.
Other positive features include; the variable speed 12 AMP motor, detachable handle, movable guard, paddle switch with safety, and the quick lock plug. I mainly use it for computer case modifications or to cut pipe for home and garden projects. oops. This is one very well engineered product and I am happy to add it to my other Milwaukee tools - they are the only brand that has consistently exceeded my expectations.My only regret is that I wish I had purchased a new one from Amazon instead, as the reconditioned model I acquired from the Milwaukee store was about the same price. It tore through that modification in about 5 minutes and accomplished in that time what would have taken hours with a Dremmel tool - having the right tool makes life much, much easier.
as a long time user of milwaukee tools, I'm not disappointed with this one. I don't know how they determine what will come from where. It is powerful and heavy duty in the true sense. But you now have to watch for some imported from china stuff from them.
Being able to slow the wheel down helped me control the tool better to get a clean, straight cut. I've cut metal, ground out mortar joints, cut tile and marble with it. I've been using this grinder for several years now and consider it one of my "go to tools". The variable speed is great for precision cutting. The 12 amp motor gives it enough power to cut 4" cast iron and everything else I've put in front of it. I had a job remodeling apartment units where every vanity top had to be cut down a couple of inches.
All of which are built to last. With as many grinding, sanding, and cut-off wheel attachments there are on the market, this little machine has endless uses. It comes in very handy especially if you want to maintain precise control of the grinder for various operations. I've owned several Milwaukee electric tools over the years including a sawzall, circular saw, 1/2" drill, and 1/2" hammer drill. This 4-1/2" grinder is no exception. I also like that it has a detachable cord. I love the variable speed feature on this grinder.
The variable speeds this model affords makes short and pleasurable work on wood carvings / and shaping. The variable speeds makes this a well rounded performer. Heavy duty performance. Have used this grinder for specific purpose of using it as a wood chipping / log carver. The easily adjustable wheel guard was especially helpful.
A specific 4 1/2" chipping blade was used in my efforts. The grinder was easy to manipulate, and did not suffer from over heating during the shaping processes. I can safely assume that when using a metal grinding wheel the tool would perform equally as well. A good reliable grinder at a fair price.
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