meow meow; thanks for describing the cutting mat cleaning. I hadn't seen anything about using vinegar but I am sure it would work wonders. As for my mat, in between cutting strips yesterday I sprayed it with a natural based cleaned and scrubbed it with a toothbrush.... oh my was it dirty from lots of spray starch overspray and temporary adhesive spray. I also turned it around so I am using an end I haven't used much, it seems like brand new! The only thing I can say about the titanium blade is that I have never experienced a regular cutting blade be this sharp before not even at the beginning. Maybe it's my imagination.....
If you can't find titanium blades locally I would google Titanium rotary cutting blades for your specific rotary cutter and see what comes up.