That looks pretty cool, and inexpensive. I just forked out last month on a keencut javelin - have to say it is one of the better purchase decisions I have made this year. Amazing tool to have in the shop - safer, more accurate, reliable and strong. Thumbs up to anything that takes away the danger, while making it easier to cut straight every time. If I ever need to advise anyone starting out on what is necessary - I will not hesitate to tell them "something to help you cut straight and protect your fingers". I am lucky enough to not have damaged my fingers in the last 5 years with my manual methods.