Messages

4051

General Mach Discussion / Re: Mach3 controlling Co2 Laser

« on: January 07, 2013, 02:09:52 AM »

It all depends on your laser high voltage power unit, perhaps you could post some details of this item.

My PSU has 0 to 5 Volt analogue input for power control and this, internally, incorporates a simple DAC (digital to analogue converter) so it will also accept a 5 Volt PWM (pulse width modulation) signal (0 to 100%). As Mach3 has an inbuilt PWM spindle speed control this can be used. However it does have some problems of periodic variation which may not show when controlling a spindle motor but does show with laser control.
At this stage I would recommend that you get everything up and running by using manual control of the maximum laser current.

The on / off  M10P1 / M11P1 or E1P0 / E1P1 commands are inserted into the GCode by the post-processor used with your CAD/CAM software.

Tweakie.

4052

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: January 06, 2013, 12:16:46 PM »

Thanks Jeff. 

Tweakie.

4053

G-Code, CAD, and CAM discussions / Re: How to split gcode into 2 parts or more..

« on: January 06, 2013, 03:54:46 AM »

Hi Anant,

I appreciate that you are new to the forum and indeed you are very welcome here but please don't make multiple posting on the same subject.

Tweakie.

4054

General Mach Discussion / Re: Probing Wizard

« on: January 06, 2013, 03:51:32 AM »

Looks good 

Tweakie.

4055

General Mach Discussion / Re: How to split gcode into 2 parts or more..

« on: January 06, 2013, 03:46:52 AM »

Hi Anant,

Sorry to make a dumb comment but I am relating to a recent discussion in another thread...

I think that if I had spent a couple of thousand dollars on purchasing Aspire and Artcam I would be reading the manuals to learn how to use them.

Tweakie.

4056

General Mach Discussion / Re: Mach3 controlling Co2 Laser

« on: January 06, 2013, 03:38:19 AM »

Hi Warped,

If it's any help, take a look at my article here http://hobbycncart.com/publ/cikkek/mach3_temaju_cikkek/switching_a_laser_under_mach_control/8-1-0-29 (also the following comments relating to the updates) then, if necessary come back with any questions.

Tweakie.

4057

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: January 05, 2013, 11:44:57 AM »

Thanks again Dan.

That led to video showing almost exactly what I want to do  http://www.youtube.com/watch?v=5NFk4Yv_ePc&NR=1&feature=endscreen

Tweakie.

4058

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: January 05, 2013, 11:19:55 AM »

Hi Dan,

Thanks, I will do a search and see if I can find it.

Tweakie.

4059

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: January 05, 2013, 10:56:33 AM »

I love the effect of the "scrimshaw" look that you get with that. I'm imagining the old oriental carvings or the scenes that sailors on ships would do on ivory teeth/tusks.

Interesting technique indeed!
Dave

Hi Dave,

I agree with you, they certainly can look really old world.

Something I want to try is a circular, rotating, panoramic view around a cylinder and since Terry created the Y to A cylindrical mapping screen this project has started to look a whole lot easier to do. I have seen pictures, in old books, where this sort of thing was done on lamp shades but I am thinking more of incorporating it into the base of a lamp. All I need is time  

Tweakie.  

4060

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: January 05, 2013, 06:27:37 AM »

Hi Bry,

The original discovery was made whilst using the blue 'Painters Tape' but I am uncertain if this contains PVC so it would need to be ‘burn tested’ before trying - just to be sure.

I used the paper transfer tape, as used for the application of vinyl signs. Different tiles and possibly different makes of tape will produce slightly different shades - this was one of the super white tiles which have a slightly bluish appearance the standard white tiles produce more of a sepia shade. As far as I am aware it only works with ceramic glaze.

I would be most interested to see / hear of others results with this.

Tweakie.