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graet post ..i will try soon

as i read here that the grease cause problems ...
what type of grease you mean ?
what about oil ?

hi team
can I use some spray like (WD-40) AND (A40 MAJIC)for ball screw and liner guide for lubricating my cnc ?
any advises please .

thanks very much CNCMAN172
now i understood .
:idea:

pleas be patient with me
sorry i more confused about this point !!
if i connect the shield as you say ((connect the shield to a bolt that attaches the spindle to the axis, or pinch it between the...

thanks every one here for helping.....
ok
i have question at this point :
now i have braided shield cable and it have 4 wires inside + braided shield...that is mean i have 5 connection for...

witch ground do you mean ? ac or dc ?
because i connect the body to the earth of ac but no thing changed .
....when i isolate the body of spindle then every thing work good
should i isolate the...

update
the main problem was in the body of the spindle
when i take the spindle out of the cnc body then every thing work great
now ....
the fourth wire(gnd) of the spindle are not connect to...

what do you mean by interference ??
could you explain more !:)
ANYWAY i did some test and the problem gone
i connect the body of cnc and all stepper motors to the pc ground DIRECTLY ...the...

hi team : sorry for my poor English writing ( i am Arabic) it its the first time i post here ...so i searched many times on google but i did not found my problem. i built my cnc machine finally , so...