Wonder if you could help me out, like most of you have a few machines laying around collecting dust. Reciently I picked up one of my machines that was given to me during my apprenticeship (given to me to rebuild and mess around with, etc.) It has an iron fram and I set it up as a slow and punchy shader/ color machine, it runs great for the first hour or so and then it seems to loose some juice. From what I've been reading it seems that this is caused by the frame becoming magnitized. (because it is iron)
Here are my questions.
1) is there any way to prevent this iron frame from becoming magnitized?
2) If I were to replace the coils with shorty's, then use brass shims and insulate the coil screws from the frame, and use a yoke under the coils, would this keep the frame from becoming magnitized? and thus keep the machine running at full juice?
I really don't want to get rid of the frame, I love the look of her and it does have some sentimental value.