Messages

6901

General Mach Discussion / Re: Program Extrema calculation error

« on: November 12, 2008, 02:27:26 PM »

Brian,
Just downloaded V.018 and rienstalled, and same thing, the dro isn't correct.It seems like it's picking up one of those crop circles
shown in the screen shot ... CAD file of extrema1.
RICH

6902

General Mach Discussion / Re: Program Extrema calculation error

« on: November 12, 2008, 01:52:40 PM »

Brian,
I just downloaded .018 and ran swarf's file. And the X extremes are not correct.
RICH

MOIDIFIED:

Will download V.018  lockdown and try it again.

6903

General Mach Discussion / Re: Bugs in Mach 3.42.015

« on: November 12, 2008, 01:39:43 PM »

In latest developement version .018 /.017 something still seems wrong in the the extrema for the mill.
See swaftboy's  post "Program Calculation Extrema Error".
RICH

6904

General Mach Discussion / Re: Program Extrema calculation error

« on: November 12, 2008, 01:35:06 PM »

I just downloaded the latest dev version .018 which installed as a V.017, and it seems like V.017 fixed the one axis but as you can see something still wrong with the "X".
RICH

6905

General Mach Discussion / Re: Having a small problem with mach3

« on: November 11, 2008, 10:26:56 PM »

Braincnc,
You may want to take a look in documentation "Mach 3 CV notes".
Also just try something with equivilant cuts using Exact Stop and compare the cutting. It will be jerky going around the corners because of all the straight lines you have instead a smooth arc. Particle board ( particularly cabinet grade) has some darn hard stuff in it, such that it seemed it's possible to push back should there be any play or backlash. Additionaly, if the router assembly isn't solid you can get some spring back when say if the axis is slowing down and the cutter has more time in an area. Also saw what looked like a soft spot in the one corner and that could even contribute more to it. Have you played around with lesser depth of cuts? ie; get the accuracy you want first and then best speed will come.
Rather than making dust, use a pencil in the non working router / no z moves  to trace around see how the profiles are  under no cutting pressure.  First step would be elimination of any Mach settings as already posted and then some playing around on your part to see what works.
Just some suggestions,
RICH

6906

G-Code, CAD, and CAM discussions / Re: cad-cam purchase?

« on: November 11, 2008, 09:33:20 PM »

Well it's available if you don't mind sending $50 to a bank in a third world country.
Maybe we can get a group rate. Oh, by the way, return postage is another 9950.
Rich

6907

General Mach Discussion / Re: Program Extrema calculation error

« on: November 11, 2008, 09:00:04 PM »

swarfboy,
Attached is a screen shot of the cuts and a CAD drawing of your posted gcode.
RICH

6908

General Mach Discussion / Re: Program Extrema calculation error

« on: November 11, 2008, 08:24:08 PM »

swarfboy,
What program generated the code?

MODIFIED: added a few more questions..
Was any scaling used on the drawing on export?
Was any scale factor used in MACH?

MODIFIED:11/12
What size cutter?
What version of mach?
I am curious about this. Notice that there are crop circles in the code. Yopu would think the extrema would be based on the
part dimensions shown, but it may be a bug that if there crop circles exist the program bases it on something else. Knowing what cutter size would probably help in evaluating the intrepetation of extrema. You could take the view that something is wrong, or ,
on the other hand, giving additional info to pinpoint something saves time.
Your nickle swarfboy, 
RICH

6909

General Mach Discussion / Re: Program Extrema calculation error

« on: November 11, 2008, 08:09:22 PM »

Thanks,
I just wanted to make sure i wasn't doing something strange. I can't fix it and have never seen it before, but, may have a clue on what is happening and will post shortly with some info so Brain can take a look.
RICH

6910

General Mach Discussion / Re: Program Extrema calculation error

« on: November 11, 2008, 06:25:21 PM »

warfboy,
What values are you getting for the extrema?
RICH