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Messages - Tweakie.CNC

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5681
General Mach Discussion / Getting Disillusioned with Mach3.
« on: January 12, 2012, 08:16:05 AM »
Hi Guys,

After all these years as an extremely satisfied (and I mean ‘really satisfied’) user I am starting to get disillusioned with Mach3 (and the speculative, guesswork, statements that version 4 will fix all the problems really does not help).

Mach was just fine ‘yesterday’ but we, as well as our machines, all move on – more complexity, more sophistication, more function, faster operation etc etc and in my case also more laser.
It appears to me that recent revisions have catered for those that shout the loudest and have not really been for the good of all. The changes that have occurred to the way CB is treated was bit of a shock at first but the addition of “While IsMoving() … Wend” between every CB statement now seems to prevent tool breakage on the ‘auto tool zero’ routine at least.

My main gripe, at the moment, is with M11P1/M10P1and the E1P0/E1P1 commands which would switch an output coincident with axis movement in more or less exactly the same way as the Z Axis can move during any X and Y Axis movements when included on the same line of GCode. Now they just don’t work !! Why ??

Believe it or not, laser usage is going to grow in popularity and if Mach keeps moving backwards by ignoring the, perhaps unique, requirements of laser users it will get left behind in this important area of CNC. I get more than a dozen emails a week about using a laser with a CNC machine and many relating to using Mach3 with a laser and whilst I am learning fast I am still far from being an expert (perhaps I never will get there).

The LPT Parallel Port is dying in its availability so I have tried the Smooth Stepper controller and Mach (without benefit as far as laser is concerned) and am now looking toward external motion controllers which use other software (a sad day for me).

My requirements, as a laser user, are pretty basic – I just need to switch an output on when an axis moves and switch an output off when an axis stops – without any delay. Is this too much to ask ??  The E1P0/E1P1 commands that Art included (for laser use) used to do exactly this so why does it no longer work ??. Why has it been changed ??. Will it be fixed ??.

Questions that will never be resolved, or will they ??

Tweakie.

5682
Thanks Russ,

For the full story of Lena this thread may be of interest. http://www.cs.cmu.edu/~chuck/lennapg/

Tweakie.

5683
Hi Guys,

This effect needs a lot more trials but based on the fact that my previous example (positive image) when viewed against a sky background appears as a negative image I decided to make a negative image and then view that against a sky background.
As I seem to be getting bit of a reputation for the ladies (thank you Jeff  ;D ) this image is of my little helper ‘Bertie’.
It is overcast here in the UK today and it was impossible to find a patch of blue sky so I used a white background and cheated a little by altering the contrast level towards the blue in Photochop. Interesting nonetheless.

Tweakie.

5684
Tangent Corner / Re: over 18/21
« on: January 09, 2012, 03:25:50 AM »
Quote
I replaced the cig's with sex, but try as I may, just can't seem to get to 20 a day.
;D ;D

I don't smoke but I understand the problem (I drink Beer).

Tweakie.

5685
General Mach Discussion / Re: Where Can I Buy Some C4....
« on: January 09, 2012, 03:17:53 AM »
If you need any help Ray then you need to be more specific about your problem.  ;D ;D

Tweakie.

5686
G-Code, CAD, and CAM discussions / Re: Halftone.
« on: January 08, 2012, 08:09:03 AM »
And this is the same image processed with Halftoner using the 'line' option and cut into particle-board with a V bit (It really needs colour filling to enhance the contrast but I just don't have the time today).

Tweakie.

5687
G-Code, CAD, and CAM discussions / Halftone.
« on: January 07, 2012, 07:21:14 AM »
This is really a spin-off from Impact Engraving and my delving into half-tone techniques.
A pair of interesting little free programs I have stumbled across are ‘Reactor’ and ‘Halftoner’ written by Jason Dorie (Mach user). These are just so incredibly simple to use and yet produce some most unusual results. With the output in .jpg format from Reactor this can be converted to either a GCode toolpath or dot drill with VcarvePro or similar whilst Halftoner will output a Mach compatable GCode or a .dxf as you chose.

This styled engraving of, the now departed, Amy was made with Reactor as an outline toolpath but equally could have been done as a V groove.

Tweakie.

http://www.youtube.com/watch?v=xoJDTPRqI6o&feature=player_embedded

http://jasondorie.com/page_cnc.html


5688
Nice, Tweakie. Where do you get all these pretty ladies' photos for your works ;)

Does a clear acrylic become opaque at the impact points?

Dan



Hi Dan,

Yes, the impact creates a tiny conical depression which refracts the incident light and makes it opaque.

The lady is Lena Soderberg (we have discussed this one before) and her full length picture (which we can't show here) was featured as the centre fold in the Playboy magazine of November 1972. She is still an attractive lady to this day.

Tweakie.

5689
Thank you adprinter, most kind.

To answer a question, asked in email, the black in the previous image is created by the background it has been photographed against. Here is the same item photographed against a sky background.

Tweakie.

5690
FAQs / Re: Problem with setting up mach3
« on: January 06, 2012, 03:11:07 AM »
Chadgarber,

Please ignore my earlier post.
I have spent some time thinking about the troubles you are having and have concluded that it is not a Mach problem but rather an installation problem.
If you do have a corrupt installation of either Windows, Mach or CandCNC you will be chasing straws forever.

In your position, I would put aside the existing PC – obtain another old PC with a fresh installation of WindowsXP and nothing else, print out a hard copy of the CandCNC installation instructions then follow them to the letter, transferring your PCI parallel port cards to the new PC and installing / setting Mach as appropriate.

Tweakie.

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