Messages

1

General Mach Discussion / Re: Milling is flipped

« on: November 06, 2010, 12:11:45 PM »

Got it, My mind has been burnt out but that makes sense, thanks

2

General Mach Discussion / Milling is flipped

« on: November 06, 2010, 11:29:35 AM »

Hopefully I am not posting tons of messages,  The site keeps giving me errors but I do not see my post.

Anyway...  My Y axis is flipped compared to what is on-screen.  Please see the below screenshots with what I am talking about and my settings.  I would like to keep the settings so when I jog, the table moves left when I press left, up when I press up, etc. 
The bottom PCB that you see is the correct one and the top is the two that I just milled.  I did the correct one with EMC2 and it does work correctly so its just a matter of my mach3 settings somehow.

 

3

General Mach Discussion / Re: Starting positioning questions

« on: August 22, 2010, 04:37:16 PM »

here is the first lines,  this is from G code file that would be used for KCAM but i find mach3 easier to work with.  Not sure if I have to do something special to work with it.  In order to have mach3 work I remove the first two lines of code.

N001 [KCAM CONVERSION]
N002 [ORIGINAL FILE: STEPCHEAP3D - TOP COPPER.GBR]
N003 %
N004 G90
N005 M03
N006 G00 Z000.500
N007 G00 X000.187 Y000.227
N008 G00 Z000.100
N009 G01 X000.1619999 Y000.252
N010 G01 X000.1619999 Y000.304
N011 G01 X000.187 Y000.329
N012 G01 X000.239 Y000.329
N013 G01 X000.2640001 Y000.304
N014 G01 X000.2640001 Y000.252
N015 G01 X000.239 Y000.227
N016 G01 X000.187 Y000.227
N017 G00 Z000.500
N018 G00 X000.262 Y000.377
N019 G00 Z000.100
N020 G01 X000.237 Y000.402
N021 G01 X000.237 Y000.454
N022 G01 X000.262 Y000.479
N023 G01 X000.314 Y000.479
N024 G01 X000.339 Y000.454
N025 G01 X000.339 Y000.402
N026 G01 X000.314 Y000.377
N027 G01 X000.262 Y000.377
N028 G00 Z000.500

4

General Mach Discussion / Starting positioning questions

« on: August 22, 2010, 03:17:09 PM »

Hello, This is my first post and first time CNC-ing so please be gentle.  I have built my own cnc table and am using mach3 to run it.  I have X Y and Z axis moving correctly.  My question is...  i have g-code for a circuit board and I have a PCB material 1/32 in thick.  I try to position my milling head(dremel tip) to the bottom left corner and touching the material however once it starts moving the Z axis picks up, and X and Y move to position, the Z axis drops down slightly and starts milling above the material.  I read another post where the G-code thinks 0 is somewhere different than the top of the material.  My Z-axis is 0 at the top and -3(ish) at the bottom where it hits the base.  I am not sure how to go about changing the z-code or my configuration to have it mill slightly into the PCB to skim off the top copper layer.  Any advice would be appreciated, just remember I have come a long way to get where I am so the more detailed info you can give would be great.  Thanks!