Karol:
Sorry you didn't have good luck...have you asked the friends you shared with what their experiences were? I use my blades with my Olfa without any problems. I have put the guard on backwards once and had an issue but it was strictly operator error.
If you sincerely don't like the blades, I would be happy to purchase them from you...of course at a greatly discounted rate since you feel they are defective. Please let me know if you wish to sell them.
As with anything in life, you take the good with the bad. Some things I have read on here cause me to roll my eyes in disbelief but other things have given me a "a ha" moment.
Keep reading but make your own decisions...nothing ventured, nothing gained.
