I have used it in the past and have had very poor results in regard to bonding time. Also, I found it to be a real mess to work with. It kind of reminded me of model glue. It was very stringy when applying, and I actually found it to be a little caustic. I have also read some post that raise concerns over one of it's ingredients. I have read some outstanding reviews of Perfectors (I think that's the name) and am considering buying a small bottle of it since it is very expensive and has a shelf life of about a year.