Incorrect dimensions from Cambam to Mach 3

[10bulls]

When you get time, and if you still have a copy of it, can you upload the .cb and gcode files that you were using for testing? ...the ones with the incorrect dimensions that is. Then I can take a look to see if I can spot anything.

[Fishnlight]

10bulls. Sorry for the delay. Still perplexed as I have tested pulse stream with O-scope, all looked good. All motor signals looked good and driver test was excellent to 100K. Then tried another computer with same results. I tried lowest possible settings for vel and acc with no change. I will try to send code tomorrow. I read a forum stating that a Dell (which I was using) produces bad PP signals. Second computer (still connected) is an HP. Any insight on this? Thanks

[Fishnlight]

Hi 10bulls
The attatchment is not what I reffered to previously as I don't have access to that file right now. This one is just as inconsistant on Y. The hole diameters, rectangle width and length are correct. When the larger holes on either side of a rectangle are measured by dragging the curser around both and checking measurement extreme in Cambam, I get 1.207" OD. This measurement when cut is correct. When I drag my cursor around the larger holes between the rectangles and get measurment from CB, it reads 5.327". When cut I get 5.390"? When the triangles are cut between the holes, they are +.030" on Y. The rectangle at Y 38.35" is out .047" and the rectangle at Y3" is out .082". I also did an additional test I read about that has you jogging axis while watching the feed DRO for erratic behavior. This test too was good. I'm using a CNC4PC C11 BOB. Maybe I should have gone with the smooth stepper? Hope I explained it well enough. Thanks

[Fishnlight]

Sorry 10bulls. I see that I can't send the g-code as attatchment. Will have to do on Mon. Thanks

[ger21]

Just change the extension to .txt and you can upload it here.

[Fishnlight]

Hi guys. Sorry for the lengthy delay. I was able to get the machine to make the cuts needed to complete my projects, but would like to correct the problem. I sent a jpg. drawing of a circle and 2 squares. I have seperated the art to allow better viewing. The parameter holes are within .003" of each other with the exception of the 10:30 position. It's out +.020". The bad coordinates all increase and decrease with different diameter size cuts. Run the code from the text file if possible and let me know what your findings are. Thanks again for the help! FYI: I ran another dial indicator test today and machine is within .002" XYZ.

[blowlamp]

Hi there.
It would be much better if you can post the .cb file that you're using to produce the GCode. Zip it up by right clicking on the file, >- Send to >- Compressed (zipped) folder.

Martin.

[Fishnlight]

Hi blowlamp. Attached is the cb file. Let me know if the file works. Thanks for the help.