Lots of ways to hurt yourself or damage the cutter changing a blade. I serviced everything printers used for 35 years. A funny one for you..I had to go to a state prison to install a new cutter and they shipped it with the bed out. When I asked for a fork lift to help install the cutter bed, the guy laughed and called about 8 inmates over to lift it into place. They handled it like it was a sheet of plywood.
Nice machine. I have changed knifes on a polar cutter many times. You want fun though try it on older cutters without all the safeties. I spent about 10 of the 17 years in printing running a 38" (1938) Oswego and 44" ( 1930's) Seybold. Those were fun to change, but doable if you know the machine
This operator has made a boo-boo straight off the bat! You should always keep the knife fixing bolts opposite/in - line with the holes they are removed from. If a bolt is damaged then it doesn't move around different holes and spoil the threaded holes in all of the knives! This is especially important if you have expensive tungsten carbide tipped blades which have only one row of bolt - holes. Looks like this operator is at the Perfecta factory showroom, so if he damages the bolts or the knives, he call walk to the Parts Store and get some replacements free of charge! Not the real World when you have to watch the pennies and the manufacturers' agent is miles away.
