I¡¯ve noticed the carriage on my U3 can lift slightly. If I grip the front of the carriage I can rock it very slightly from side to side. This allows it to yaw a fraction - it cuts on the back as well as forward stroke.
Assuming that the gibs that hold the carriage down on to the bed were worn (Emco call them ¡®keep plates¡¯) I made some new ones (twice as thick - 6mm oilon) - fitted them today but it has made no difference.
I¡¯m thinking it can only be that the base of the carriage is somehow lower than the bed, so the gibs aren¡¯t pressing the carriage down properly on to the prism. I can¡¯t imagine that the underside of the bed can be worn, or the top of the bed (considering the carriage is aluminium).
Has anyone else come across this, and, if so, how did you rectify it?
Thanks!
