I was going to refer to them as 'disposable' tools but didn't want to offend anyone. Guess I didn't have anything to worry about.
Ya know, I always refered to them as disposable tools, but I muyst say, I have 3 inline air grinders, 5 right angle air grinders, an in-line air sander, 4 DA sanders, 1 cut off grinder, an air riveter, a sandblasting cabinet, a full size sand blaster, a parts washer, an 80 gallon 15 SCFM air compressor, 2 hydraulic floor jacks, 2 staple guns, a 16 penny air nailing gun, (which built my complete garage), 5 different air spray guns, an air and an electric multipurpose tool, an air and an electric power hacksaw, a 4.1/2" electric grinder, an 8" bench grider, a 6" bench buffer, a vise, my tap & die set, my 2 electric hoists, my chain fall, and that does not include all the small hand tools, creaper, and even the free stuff from Harbor Freight that I bought as "disposable tools" which are still working after several years of what I call real abuse. I even stopped buying the extended warranties because I was throwing money away!
In fact, I can only think of one thing from Harbor Freight that I have that has failed, my electric 12VDC trailer winch, and they replaced it no questions asked. The part of it that broke was not even the winch or motor, it was the plastic case where the power cord plugged into. Even my Harbor Freight air compresser out lasted my Sears air compressor and did 6 times the work, and so far it also is still going strong. I could buy TWO 15 SCFM air compressors at Harbor Freight for less than what Home Depot or Lowes wanted for one 17 SCFM compressor with the same size tank. I would have 160 gallons of storage at almost 30 SCFM, but so far I have not needed it. And from my posts on my '68 Custom Restoration, it is easy to see the work I have put these tools through so far.
At least for me, it has been real good luck so far! And if an air grinder dies on me tomorrow, I get another one for nine bucks - with another free tool!