Messages

5901

General Mach Discussion / Re: how to view front,side,back on toolpath display with function key ?

« on: April 12, 2011, 02:49:05 AM »

There is no one replay ?

there is no way to view this ?

As Terry says - hold the left mouse button and drag the image.

If you want to get into programming the function keys with VB and using the screen designer then fine but it is hardly worth all that effort as the mouse system works well.

Tweakie.

5902

Mach SDK plugin questions and answers. / Re: Impact engraving plugin

« on: April 11, 2011, 08:43:08 AM »

I think this is because Mach has a lot to do just to calculate and generate the pulse stream so the PWM speed control comes second.
I really think you should consider the 0 to 5 volt analog or else construct a 'stand alone' PWM generator for the laser maximum current control. (Using a PIC which incorporates the HPWM it is not difficult to do and it will run from 5 volts and need less than 10 or so components to complete).


Tweakie.

5903

Mach SDK plugin questions and answers. / Re: Impact engraving plugin

« on: April 11, 2011, 06:46:27 AM »

Thanks tweakie i will have a look.I am using pwm from mach board,so its little bit tricky to find the voltage and its frequency.

I think that is your problem.
I tried using the Mach PWM and dropped it in favour of 0 to 5 volt analog control for my max laser power.

Tweakie.

5904

Mach SDK plugin questions and answers. / Re: Impact engraving plugin

« on: April 11, 2011, 06:02:47 AM »

Tweakie thanks,
but when i am reducing to 5000mm/min the laser doesnt fire!

Just a thought but it may be worth looking at the electronics train (TTL) to improve the voltage that you get at the laser input. IMO the laser should be triggering OK at 5,000 mm/min (mine triggers down to 3,000 mm/min). If you can get this sorted then I am reasonably confident that the double image problem will be cured and you can return to the 70,000 speed without issue.

Tweakie.

5905

Show"N"Tell ( What you have made with your CNC machine.) / Re: My 1st Design Harley Davidson

« on: April 11, 2011, 05:47:56 AM »

Really nice work Dave - I can't wait to see more.

Tweakie.

5906

Show"N"Tell ( What you have made with your CNC machine.) / Re: Applique patterns

« on: April 11, 2011, 05:42:05 AM »

Great idea. Did you spring load the marker of just rely on the give in the tip ?

Perhaps a Logo next ? 

Tweakie.

5907

Show"N"Tell ( What you have made with your CNC machine.) / Re: Here's my DIY pendant

« on: April 11, 2011, 05:34:44 AM »

Very nice indeed.

Tweakie.

5908

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

« on: April 11, 2011, 05:29:25 AM »

I know that a Permanent Marker would have been just fine but it is these little things that earn me Brownie Points. 

Tweakie.

5909

Mach SDK plugin questions and answers. / Re: Impact engraving plugin

« on: April 11, 2011, 02:16:46 AM »

ntlaser,

Looking at your Micken Mouse, the double image is not linear and this suggests to me that there could be a delay between the Mach digital trigger pulse being sent and the laser actually firing. Maybe that reducing your feedrate to something around 4 to 5 thousand mm/minute may produce different results.

Tweakie.

5910

Show"N"Tell ( Your Machines) / Re: Diy Laser cutter MK1

« on: April 10, 2011, 11:19:09 AM »

Yep, plenty of castor fumes and how about the tethered car racing ?
We could start another thread on this. I think Eddie Keil died a while back but Keil Kraft were located in Wickford, not far away from where I live now. Most of my buddies buy the artf planes and as you say, few build their own from scratch now.

Getting back to lasers, have you seen the Z axis table mechanisms that Bart has used for his machines ? http://www.buildlog.net simple yet effective.

Tweakie.