I finally got around to getting a "professional" DIY oil filter cutting tool and after some research, picked the JEGS 80532 (bought off Amazon). I've cut open my first filter with it (Kia OEM filter, MANN+Hummel made) and have been pretty impressed with it. The cutter wheel is not easily replaceable but if you take 4 or 5 turns (tightening the cutter each turn) so as to not overload the cutter, it should last a long time. Very easy to use. I would highly recommend it. Cost was ~$45 w/shipping.
Some quickie tips:
Use it over your oil drain basin used to drain the oil out of your car as their is plenty of oil in the filter that will come out when you cut into it. It also helps to use a fluted cap tool (w/wrench) to help turn smoothly the filter while mounted to the cutter tool.
https://www.amazon.com/JEGS-Performance-Products-Filter-Cutting/dp/B007VR8C0U
Some quickie tips:
Use it over your oil drain basin used to drain the oil out of your car as their is plenty of oil in the filter that will come out when you cut into it. It also helps to use a fluted cap tool (w/wrench) to help turn smoothly the filter while mounted to the cutter tool.
https://www.amazon.com/JEGS-Performance-Products-Filter-Cutting/dp/B007VR8C0U