Here is a letter I sent today to RotoZip customer service:
I received the RZ5 as a gift last Christmas. I have not had a reason to use it until today to remove some excess sheetrock around twelve 20 foot 2×8 rafters that I installed in my garage. I want to share with you my experiences with the tool.
1) Upon inserting the bit into the chuck, it was very hard to get the chuck to lock down tight enough to hold the bit in place. I thought I had it tight enough on two occasions yet, it fell out of the chuck when I operated the tool. I am lucky that I was not injured. I decided to remove the depth guage and tighten up the chuck with the included wrench.
2) Upon tightening the bit with the included wrench and re-attaching the depth guage, the tool actually worked the way it is supposed to. Once I was finished, I wanted to try out the abrasive cutoff attachment on some conduit. I could NOT get the bit out of the chuck!
3) After muscling up on the chuck, turning it counter-clockwise, I actually removed the entire chuck from the shaft. (Why isn’t the shaft reverse threads??) So now I have a drywall bit stuck in a chuck that I can’t get out. Very frustrating.
4) I can’t believe that the dust hood isn’t included in the kit. This thing throws dust like crazy. I had to put on my half face respirator to finish the job.
5) I really feel that the handle is unreliable. Because of the removable function of the hard auxiliary control handle, the handle does not fit snug up against the tool housing and rattles when the tool is turned on. The handle does not provide enough stability to use while the tool is in cutting operation.
I have almost every tool there is. I am a far more accomplished craftsman than the best weekend warrior. I am not sure what to do at this point; My father gave me the tool and he said he bought it from Home Depot, but I know they will not do a thing about this as I don’t have a receipt and the tool has been used (let alone the fact that it has been a year).
I would like a replacement kit just like what I have. I am willing to send you back (at your expense) the tool I have now so you can have you product and manufacturing folks evaluate what I am talking about. Clearly there is something wrong with this tool. Maybe it was a faulty manufacturing run?
To the two people reading my rants, I would not recommend this tool to the most experienced person. It is junk. I am just trying to get another one that works, so I can use it somewhat in a limited fashion.
Cheers!