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Topics - robh

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General Mach Discussion / Accuracy in pocketing.
« on: March 16, 2010, 02:31:50 PM »
I am having a problem with the accuracy when milling pockets. I have re-adjusted my leadscrews and also checked the X andY travel with a dial indicator to compare with the displayed measurements in Mach3 and all compares well.
I have used the backlash mode on and off in Mach but the round pockets are still consistently smaller than the programmed size. i.e about .5 mm on 35 mm Dia. (They are perfectly round though) I have checked the tool settings and the settings are correct..
I generate the G-code using LazyCam.
Any help would be much appreciated.

FAQs / Cutting outside profile problem.
« on: March 12, 2010, 05:59:35 PM »
I have been trying to mill an outside shape and get an undersize finished item. The cutter is cutting on the line even though I have used the outside command during setup. i.e the part is undersize by the diameter of the cutter.
The tool diameter is set in the tools menu so there is a obviously a parameter I am missing. Any help welcome.

General Mach Discussion / wizards
« on: March 10, 2010, 08:11:16 PM »
Help please,
I have been using the round pocket wizard by Brian Barker which is included in the Mach 3 program. All worked well at first but now the pockets are not round, there are flats on both sides in the X plane. I am using a sherline mill !.

Pages: 1