I feel an idiot for not being able to get this damned thing fixed myself,
but I have a smallish bench mounted metal cutting bandsaw of good quality.
OK, she's done a bit of work before I got her, but there's no wear in the
bearings and the cast iron wheels run true. I have played with blade
tension (tighter seems more reliable) and with the top (none powered
wheel) tilt, which is adjustable, and the blade guide ball bearings, which
are adjustable, but STILL the blade will suddenly jump off one of the
wheels. 3 things look less than perfect. the wheels had some sort o gritty
coating, when new, like coarse carborundum paper, this is now quite worn.
The blade makes a noticeable jump as the welded part passes through the
work piece. Nothing much, but when worked hard it is audible and can be
felt. Finally the blade is quite old and not as sharp as it might be.
Cutting alloy makes the blade come off more than steel.. Can anyone with
experience of these machines point me in any directions to look to?