Rarebear has kindly agreed to make some custom pieces for my Cremina 67. He asked me to determine thread sizes for the original portafilter, the OE Penney portafilter, the handle, the boiler cap and the steam knob. For the life of me, I find that I do not have the hand strength to twist off the bakelite portion of the handle or the plastic portion of the Penny portafilter. And, I am unable to remove the steam knob from the machine.
I would appreciate the help of anyone who owns a Cremina to determine these thread measurements. I'm going to try and warm the handle and penney portafilter to see if that will help loosen the plastic pieces. Are there any other tips anyone might have to help me unscrew these pieces? I'm going to watch the OE videos too in the hope that Doug and Barb have addressed this type of problem. Thanks