Should work on all of those substrates with the correct blade.
Mike, I'm currently having a problem with cutting out thinset that oozed up in the grout joints while setting mosaic tile, and it hardened (long story, don't ask). My usual means of cutting it out won't work because it's a little hex mosaic, similar toThe high speed burns up every bit in seconds
As you can see, this won't work in the case of the mini hex mosaics.I use a multi tool to remove the extra thinset if I let it go to long to simply knife it out.
I don't understand this at allThe tile you have sound like the blades might be to long----could you trim down an old blade with a pair of tin snips?
Agreed, as the proper blade will be able to handle the work depending on the power tool that is.Should work on all of those substrates with the correct blade.
On Dremel's main website, model number 7144 is diamond particles.What I found was the the 7144 didn't seem to get hot. It was "cool" to the touch during normal use. It must have a thin coating of diamond on it. As soon as the very tip broke or rubbed off, or the diamond coating wore off in a spot, things went downhill very quickly. Then they would heat up, but at those spots it was spinning plain metal. I'm not sure they "burned" up as simply wore off.