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Messages - Tweakie.CNC

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4831
Tangent Corner / USB pendant.
« on: December 13, 2012, 03:11:30 AM »
Has anyone tried one of these pendants yet ??

http://cncpendant.ru/en/shuttlerustm32.html

Tweakie.

4832
General Mach Discussion / Re: Video issue
« on: December 12, 2012, 07:26:56 AM »
Hi Simon,

I don't know if it's any help but I had exactly the same problem (VideoOCX (VIDEO) - Driver can't be connected) when I first started using the on-screen video window with a webcam.
I tried 3 different makes of 'plug and play' webcam until I found one that worked correctly.
My conclusion was that the problem was related to the USB interface or perhaps it's BIOS settings.

May I suggest that you try Klause's video window http://www.kd-dietz.com/klausphp/pages/ger/plugins/webcam/description/wcam_description.html which perhaps offers a better camera selection / recognition procedure to see if that works with your camera.

Tweakie.

4833
General Mach Discussion / Re: laser software
« on: December 12, 2012, 02:03:38 AM »
As far a photographic images are concerned different materials will almost certainly require different techniques in order to achieve the best results.

For example to reproduce a photographic image on wood it could be processed as an 8 bit image producing (in theory) 256 shades of grey. It may take a bit of practice to get it just right but the results can be truly stunning.
Plastic, on the other hand, will not accept shades of grey so photographic images are usually pre-processed into a 1 bit image using a ‘Dot Dithering’ (or similar) technique to produce the illusion of shades. Again it is a technique that requires some practice.

You will need to collect a number of different softwares in order to explore these various techniques so there is not really a simple answer to your first question.

May I suggest that you browse through this thread. http://www.machsupport.com/forum/index.php/topic,12444.80.html
It has become far too long to read everything so just scan trough, looking at the pictures and when you see something similar to what you want to produce, read the post which should explain how it was done and what software was used.

Tweakie.

4834
General Mach Discussion / Re: laser software
« on: December 11, 2012, 12:18:02 PM »
What is the material you will be using ??

Tweakie.

4835
General Mach Discussion / Re: laser software
« on: December 11, 2012, 06:13:14 AM »
Something like Vectric VCarvePro would take care of all your cutting and text engraving requirements.

It depends on what type of images you want to laser produce but the Mach3 Impact / Laser plugin works well for me.

Tweakie.

4836
Hi Steve,

Excellent work with the laser building and beam alignment / setup video etc.

If  I may be so bold as to make a suggestion, there is just one additional test that you perhaps may want to add to your alignment video – that the laser beam exits the nozzle at 90 degrees to the work table in both planes.

This, to a large extent, is determined by the position at which the beam hits the final mirror and it is easily checked by placing a piece of acrylic on it’s side on the work table in line with the X axis and firing the laser into it then checking that the resultant cut / hole is in fact square (and repeated again for the Y axis plane).

If this aspect is not set correctly then any thicker parts cut will not have vertical sides so IMO it is an important part of the alignment process.

Keep up the laser work and I look forward to seeing some more pictures / postings of the things that you make with it.

Tweakie.

4837
Excellent.  8)

What is the project that you are building Chris ??

Tweakie.


4838
Hi Richard,

Welcome to the forum, nice to see another member from the UK.

Don't forget to post some pictures of the work you do with your new CNC machine.

Tweakie.

4839
Thanks Guys.

Quote
Tweaks does this assume that the 2 points are inline with the axis when referenced back to the drawing ?  IF not you have to account for that offset as well.  

Just a thought, (;-) TP

Hi Terry,

Yes indeed sir, you are quite correct.

If the Datum and Reference are vertically in-line (the angle is zero) then work re-positioning only takes the one referencing operation.

If the Datum and Reference are not in-line then the angle has to be referenced / calculated at the time of manufacture and stored.
Work repositioning can then be carried out by calculating the new angle, retrieving the original angle, subtracting one from the other then using the result for the Local System Rotate.

Tweakie.


4840
General Mach Discussion / Re: Backlash strangeness
« on: December 09, 2012, 10:46:31 AM »
Hi Ansen,

I am pleased that you have got it all sorted.

Now I am looking forward to seeing some pictures of your multi-layer acrylic works.  ;)

Tweakie.

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