Messages

1581

G-Code, CAD, and CAM discussions / Re: Circle is not a Circle

« on: February 05, 2018, 07:54:13 AM »

Hi Mesp,

Some CAD/CAM software's create arcs in Incremental Mode whilst other create arcs in Absolute mode ( you would need to Google it but the difference is basically the positioning of the centre of the arc ).
The IJ Mode setting within Mach3 is Modal so to be sure of the correct outcome all Gcode files containing arcs should specify the Mode (G90.1 / G91.1) as appropriate. This way you can run Gcode that has been created with any CAD/CAM software without encountering the problem you had discovered. Look at the Gcode of the smiley, it contains G91.1 so I knew it would run OK on your setup.

Tweakie.

1582

General Mach Discussion / Re: Steppers have no torque.

« on: February 05, 2018, 06:01:49 AM »

Do they have ferrite magnets?

Absolutely no idea.

I will contact Sonceboz and see what they have to say about the lifespan vs. torque of their motors - I think they only make round case types.

Tweakie.

1583

General Mach Discussion / Re: Steppers have no torque.

« on: February 05, 2018, 05:23:01 AM »

The old round stepper motors relied on ferrite magnets for their power. After 5 -10 years the ferrites lose their magnetisation and the stepper motor loses its torque. I have a large box of old round stepper motors of all sizes ...

I hope not.   

All my steppers are round case and most, if not all, are now more than 10 years old. 

Perhaps there are Steppers and there are Steppers (mine are Swiss made, Sonceboz).

Tweakie.

1584

G-Code, CAD, and CAM discussions / Re: Circle is not a Circle

« on: February 05, 2018, 04:35:05 AM »

Hi Mesp,

Try this Gcode file.

Tweakie.

EDIT  Just spotted the problem...

In Config / General Config change the IJ Mode to Inc. then Regen Toolpath.
In general all Gcode files containg arcs should include the G90.1 or G91.1 (as appropriate). For your Gcode file add G91.1 on a seperate line at the start of the code - your circles will then become round. 

1585

G-Code, CAD, and CAM discussions / Re: Mach3 Error when running G-code

« on: February 05, 2018, 02:12:32 AM »

If you .zip then attach your Gcode file it can be checked for errors.

Which motion controller are you using (make and model) ?

Tweakie.

1586

Show"N"Tell ( Your Machines) / Re: NEMA 23 peckerhead

« on: February 05, 2018, 02:08:44 AM »

Excellent work Roaster.

Tweakie.

1587

Mach4 General Discussion / MOVED: pmdx 126,107 speed control and 411 or 410 for mach 4

« on: February 05, 2018, 02:03:30 AM »

This topic has been moved to Bargain Basement.

http://www.machsupport.com/forum/index.php?topic=36517.0

1588

Share Your GCode / Re: Demo Gcode

« on: February 05, 2018, 01:43:34 AM »

Hi DIY,

It's nothing to do with using Mach3 in DEMO mode.

Scorpion.tap was prepared in metric (mm) units and the code contains the appropriate G21 command so it should have a dimension approx. 206mm x 235mm.

Could you please try the Axis Calibration feature (Settings page) and follow the on-screen instructions to check the calibration of your machine.

Tweakie.

1589

Mach4 General Discussion / Re: Should I start out with Mach4?

« on: February 03, 2018, 07:31:41 PM »

 

Tweakie.

1590

General Mach Discussion / Re: Spindle button disables stepper motors (Laser engraving on a 4 axis mill)

« on: February 01, 2018, 01:50:15 AM »

Perhaps check your Ports & Pins allocation for a conflict.
or
If your stepper drivers require an enable signal that you have not used the allocated pin for your laser control.

Tweakie.