The vintage pushbutton knitting machine developed a set of sticky buttons shortly after it came home with me, which was annoying but not terribly surprising for a 55 year old mechanical object.
I tried to see if I could fix it without taking it apart, but that didn't work. It wasn't actually the buttons that were the problem, it was the sliding needle selector plates which are controlled by the buttons. They're supposed to slide, but they were sticking to each other.
So with great apprehension I took the machine out of its case without breaking a single plastic rivet (there's a trick to it!), removed the pushbutton set, took the needle selector plate assembly apart and cleaned each plate with simple green, then put it back together. Now the buttons are all nicely clicky again and I'm so very pleased with myself.
(I bet this is the same thing I'm going to have to do with the punchcard machine... which is "only" 47 years old. If only the 38-year-old electronic machine could be fixed so easily!)










