Oh OH, I have some experience with quitting dremels - ship it back to them if the body is not working. I just returned my MXP and they shipped me a refurbished one - just like new and now I can kill this one, then send IT back. Yay. I love a good tool company.
If you just couldn't MAKE it work - that does take some practice and fiddling with the different cutting blades etc. Which I also blew through at first.
My first incubator after the foam one, was a bator I dubbed Uglybator but it worked for six hatches. So I kept it going til I could build another.