Messages

621

German / Re: Hilfe bei der Laser Einrichtung

« on: August 13, 2018, 05:16:17 AM »

Hi Matthias,

I am using a CO2 laser which will cut into the acrylic if the power level is set too high.

This test was done the same way as the previous example, using air-assist and two passes. I don't think the small letter size should be a problem.

Tweakie.

622

German / Re: Hilfe bei der Laser Einrichtung

« on: August 13, 2018, 03:20:55 AM »

Hi Matthias,

This was done quickly this morning with ‘rattle-can’ matt black, badly sprayed onto opal acrylic.

I used ‘air-assist’ to prevent the vapour from the paint colouring the acrylic – I used a very low power setting (to avoid cutting into the acrylic) and two passes (the second pass cleans-up any residual paint).  I just used a standard typeface saved as a bitmap so it is a bit blocky – with properly prepared graphics and a bit of practice I think this could work well.

Tweakie.

623

German / Re: Hilfe bei der Laser Einrichtung

« on: August 12, 2018, 10:51:11 AM »

Hi Matthias,

Sorry but I have not tried to do that so cannot give a definitive answer.

(It would appear that a laser with a wavelength that passes through acrylic (red ?) may ablate the paint layer without affecting the acrylic, assuming that the generated heat could be dissipated without melting the surface of the acrylic).

Tweakie.

624

General Mach Discussion / Re: Mach 3 seems to be adding circles to my code

« on: August 12, 2018, 10:34:43 AM »

I am pleased that it works.

It all relates to how arcs are drawn within the CAD/CAM software and the resulting Gcode should ideally contain the G90.1 or G91.1 (as appropriate). The Mach3 manual explains more about Absolute / Incremental IJ Modes.

Tweakie.

625

General Mach Discussion / Re: Mach 3 seems to be adding circles to my code

« on: August 12, 2018, 08:07:31 AM »

Hi,

Go into Config. / General Config. and change the IJ mode then regen. the toolpath.

Tweakie.

626

German / Re: Hilfe bei der Laser Einrichtung

« on: August 12, 2018, 07:53:40 AM »

Hi Matthias,

The software you are currently using is probably best.

For Raster engraving I have been using the Mach3, Impact/Laser engraving plugin with excellent results but not all have had a similar degree of success. The latest version and my .pdf guide can be downloaded from here;  http://tweakie.byethost10.com/Engraving.zip (due to my bandwidth issues the download may be slow).
Perhaps give it a try and see.

Tweakie.

627

Mach4 General Discussion / MOVED: No movement all 3 axix's

« on: August 11, 2018, 10:46:17 AM »

This topic has been moved to General Mach Discussion.

http://www.machsupport.com/forum/index.php?topic=38109.0

628

German / Re: Hilfe bei der Laser Einrichtung

« on: August 11, 2018, 08:14:36 AM »

Hi Matt,

Are you Vector engraving this little panel or are you raster engraving it ?

Tweakie.

629

German / Re: Hilfe bei der Laser Einrichtung

« on: August 11, 2018, 05:44:55 AM »

Hi Matt,

The problem with the M3/M5 commands is that they are slow to operate and unwanted laser burn is often produced.

The command M11P1 will turn On Output #1 and the command M10P1 will turn Off Output#1 so this Output# has to be set to the Port & Pin number used to turn your laser On/Off. These commands are much faster and have been incorporated within Mach3 especially for laser use.

For the M11P#/M10P# commands to work correctly you also need to be using Mach3 version .056 or later.


Tweakie.

630

German / Re: Hilfe bei der Laser Einrichtung

« on: August 11, 2018, 02:37:11 AM »

Hi Matt,

For simple On / Off control (M3 / M5) you could use the Spindle Relay output from your controller card. For improved control the M11P#/M10P# commands could be used.
The Spindle Speed output (0 to 10 Volts, PWM) from your controller will require both the M3 and S### commands. You need to check your Spindle setup in both Mach3 and your controller card to get the required S### command output voltages.


Tweakie.