I just bought a cheap roller cutter off eBay for around a fiver and do the same with the tbg, I cut quite a lot as I sell a few sets plus I,m the only one among my mate that makes band sets so I,m forever cutting for them as well and my current cutter is still going strong after nearly two years of use
i just bought one off amazon,, and a cutting mat for £8.00 both were half price