Bests & Worsts Reviews from Amazon

I bought this engraver to mark all of my tools with serial numbers and my name. On the very first tool, after engraving the serial number, the diamond tip began to loosen and slip out. I reached for the included little wrench with a standard screwdriver tip on one end to tighten the set screw that holds the diamond tip in the tool. I tried to use the screwdriver tip to tighten the slotted set screw and quickly discovered that the provided tool was too thick to fit into the groove in the set screw. I was a little miffed, but just walked over to a benchtop polishing wheel to remove a small amount of steel from the tool so that it would fit in the screw for which it was made. When I returned to the engraver to tighten the set screw the tool fit perfectly, and with one turn the screw, all the threads stripped out of the tool, not off the set screw. The set screw is just fine, but the metal that was threaded for it to go into is made of a metal so soft that it cannot withstand a single turn of the set screw that is essential to hold the diamond tip in place. I'm still rather incredulous that this tool would be made so poorly; perhaps they had a bad batch that got out on the market. If you already have one, with a soft metal housing for the diamond tip, you might wish to try some Locktite on the set screw and perhaps even the diamond tip where it contacts the soft metal housing. Be sure to take note of the different strengths of Locktite so that the bottle or tube you buy will be effective. My engraver will be going back, and I do not think I will be purchasing any more Dremel products in the near future.