ANBULL Mini Portable Stained Glass Grinder Machine - 65W 110V Art Grinding Tool with 5/8" & 1" Bits (Blue) - Perfect for DIY Stained Glass Projects, Jewelry Making & Home Decor Crafts

Purchased the grinder in September 2021. Works great, really easy to use. Made some great looking mosaic pieces with it using the included 1” bit. After a few weeks I wanted to raise the bit, because it was getting dull, but I could not remove it, as it was stuck onto the motor shaft. Finally, after using WD40 and a lot of tapping onto it, managed to remove it and noticed that the shaft was corroded where the bit was making contact with it. After resetting the bit, the grinder would not turn on anymore. Dismantling and checking everything it turned out that (using a magnifying glass to look) on the armature hair-thin winding coil wires had come loose, because the solder holding them on to the commuter bar had fallen off, probably because of the tapping. That shows some bad workmanship. My suggestion to the people who have also purchased this item is to periodically remove the grinder bit from the motor shaft, inspect it for corrosion and put a little WD40 onto it. It is the same water that is being pulled up to lubricate the bit that is causing the corrosion. This is a great machine and I would have loved to have it working again. So, Amazon, it is still within the 12 months’ return and exchange period…What now? Do I get it replaced?…….Update: I changed the rating to five stars due to the excellent Customer Service at Anbull. Immediately after the review, I was contacted by the Anbull Customer Service through email and the Amazon messaging Service. They started the process to send me a new machine, without me having to return the defective one. The new machine is working flawlessly, still very quiet and doing an excellent job at smoothing tiles for my mosaic projects. Based on what caused the problem in the first place (the grinding bit getting stuck), I now remove the bit after every day of use and rinse it.Once again, a thumbs up to the excellent Customer Service at Anbull!