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General Mach Discussion / Re: holes .2mm undersized, backlash???
« on: February 19, 2014, 01:44:43 PM »
Backlash will show up in circles as either flat spots at the cardinal points or even an oval shape depending on how bad the backlash is.
Easy way to test for backlash is place a Dial indicator on the table, mag base on table and point agains the head or quill and then jog one way for a wee bit. Zero the axis DRO then put Mach into step jog mode and set the step increment to maybe 0.01mm and start to jog the opposite way a step at a time. As soon as you see the needle move your backlash has been taken up and you can see how much by reading the DRO.
Hood
Easy way to test for backlash is place a Dial indicator on the table, mag base on table and point agains the head or quill and then jog one way for a wee bit. Zero the axis DRO then put Mach into step jog mode and set the step increment to maybe 0.01mm and start to jog the opposite way a step at a time. As soon as you see the needle move your backlash has been taken up and you can see how much by reading the DRO.
Hood