Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: jonny quest on December 04, 2011, 11:58:05 PM
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trying to learn how to cut a circular pocket with a wizard.
I already almost crashed my machine because some of the wizards are metric... didn't like that.
viewing a video would be a big help, searched youtube and couldn't find one... or any video of a wizard use may be a big help
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(http://img.photobucket.com/albums/v250/williamsmotowerx/nfs.jpg)
What is exactly the "X center" and "Y center"
Let's say I have my cutter positioned exactly over the center of where i want to make my circular pocket. Do I just leave these at "0"?
When I preview the wizard it looks like the X and Y move before it starts cutting pocket
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X and Y center is the location of the circle relative to where the center of the cutter is. Thus if they were both zero you would be exactly over the center of the circle
and there would not be a rapid move to the center of the circle. Now if you were use say x &y =2 you would see a rapid move to the center.
One thing to remember or always check is your current location shown in Mach ....before...... you use the wizard. If the x & y DRO shows their location to be 2 then even if
you used zero for the X&y center in the wizard you would see a rapid move to the center of the circle.
I think this is why you are seeing the move.
RICH
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I already almost crashed my machine because some of the wizards are metric... didn't like that.
I think all wizards can be set to metric or imperial, if you look there will be a button to change.
Hood
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I had loaded a non NFS wizard, it didn't have inch/metric option like NFS.
So I just put in small metric dimensions for an air cut run. Z tried to go 100mm up (actually 100")... When everything was supposed to start at zero... Z just homed rapidly.. then looked at gcode and saw mistake.
Is absolute or incremental preferred for NFS wizards? Isn't there a Mach checkbox for this?
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What wizard is that?
Absolute is the norm.
Hood
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New fangled solutions, circular pocket.
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After choosing the circular pocket option from Newfangled Wizards menu, under "Tool Properties" which is the first page to input data, there is a choice right next to "Tool Unit" of Millimeters or Inches.
Dave
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Budman, the NFS ones are good. It was a wizard by another guy that was purely metric.
I swear there was a wizard bid out there, I just need to view a vid to start me out right.
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Just take the time to play with the wizards and see how they work.
Practice makes perfect..........
RICH
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absolute or incremental Isn't there a Mach checkbox for this?
In Mach the tabs at the top of the screen:
Config> General Config > tick the distance mode you want ( second column about mid way down) and save settings
RICH
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Ok, cut my first part. Perfect circle... But I tried to cut a .862" dia with a 3/4" endmill. Circle ended up being .838".
Why would this be?
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A few things to look at:
-Is it a "true" circle (measure the diameter in a few places)?
-Have you confirmed your steps per inch settings for your motors to be sure they're correct?
-Accurate measurment of the endmill?
Dave