After using the laminator perhaps a dozen times here is what I noticed: 1. It overheats after 10-12 sheets requiring you to wait while it cools before continuing. 2. It will bubble and wrinkle laminating material or 3. Jam up requiring you to pull the laminating sheet and insert back out and essentially unusable. 4. It took in a normal thin laminating sheet with a single copy sheet of paper and jammed irreparably. I tried to unjam it; I tried opening up the machine to pull paper; nothing worked -- I'm unhappy and having to purchase a more reliable machine.
I bought this laminator for my classroom and love it so far! It heats up quickly and has both hot and cool functions. I have not experienced any issues with this machine.