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Messages - Tweakie.CNC

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5221
 ;D ;D  I thought we were still on the surfacing, didn't realise there was a picture in there.   ;D ;D

Tweakie.

5222
Hi and welcome to the forum.

Whatever program did you use to create that code ??

As you say It starts off aright then ends up all over the place as far a Z position is concerned - Try the Surface wizard within Mach, it will produce better code.

Tweakie.

5223
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: October 05, 2011, 08:06:16 AM »
Thanks Ya-Nvr-No.

I have to admit to a slight Faux Pas here because I obviously checked the wrong box in the online interpreter I used and this sign turned out to be Grade 1 Braille.
Grade 2 (as I had been asked to do) would have had the ‘ing’ replaced by a single ‘contracted’ character.

I just learn as I go.  ;D

Tweakie.

5224
General Mach Discussion / Re: New to CNC, Need input please
« on: October 04, 2011, 11:23:43 AM »
Very nice machine Mike.

I can understand your wife's views about it being in the den.  ;D

Tweakie.

5225
General Mach Discussion / Re: screwed up sign
« on: October 04, 2011, 11:16:34 AM »
Your dxf looks good, at least the profile is OK with LazyCam (cant test pocket as I don't have the licensed version).
The dxf works OK with VCarve as well.
I think your problem may be something other than the actual dxf.

Tweakie.

5226
It all started out as a laser project but…….

This is one of the first (proof of concept) of a number of different signs which are to be placed adjacent to the related plants at a special garden event in 2012. The intention is that partially sighted / blind people who can read Grade 2 Braille can, at their own pace, associate a smell / aroma with the relevant type of plant / flower.

The material I have finally used is a PVC based engraving laminate, I have not yet been told the actual colours that are be used but this piece of white / red was handy.
The Braille characters have been formed using the well established process of drilling a series of holes, just over half the depth of the diameter, then pressing in (interference fit) spherical balls, in this case they are 440c stainless.
Try as I may with the laserable (acrylic) laminate I have just not been able to get the hole depth consistent between the different colour samples – it seems that the pigment of the colour affects the laser penetration so each colour sample has a different setting and obviously the depth has to be maintained quite accurately - also, with the laser, it is a raster process and not a vector one as I would prefer.
The advantage of spindle drilling the holes (vector process) is that the same GCode toolpath can be used, with offset, when automatically inserting the balls. The disadvantage is that the engraving process is a lot slower with a spindle than it is with a laser. Anyway I decided it was “swings and roundabouts”, I would use the PVC laminate and it would be an all spindle process with two tool changes. Engraving point first, endmill second and ball insertion device third.
 
As you can probably guess by now, the process of placing balls in holes to form Braille characters has been patented (there are many related patents in fact) and I have just had a teeny little bit of disagreement with the main patent holders, who would have me (and others wishing to produce ADA compliant signage) believe that the extent of their patents are far greater than they really are. Also they are asking $2000 USD for a license (which I have severe doubts has any validity) to use their process, tools and consumables.
However, thanks to some international co-operation and an opinion by the UK Intellectual Property Office, I am now confident that this ‘$2000 licence’ is totally unnecessary and is little more than just a ‘pitfall for the unwary’. If I am wrong – well, we will just have to wait and see.

Tweakie.

5227
General Mach Discussion / Re: Spindle speed control - serial port
« on: October 04, 2011, 03:08:47 AM »
You may be better following the Texas instructions.

1) Write down all your settings (that currently work) in 'Ports and Pins' and 'Motor Tuning'.
2) Load the new xml supplied by Texas
3) Change all the settings in Ports and Pins and Motor Tuning to those you wrote down.
4) Then see if it works.
5) If it doesn't work then post your (now modified) xml for Hood to look at.

Hope this helps.

Tweakie.

5228
General Mach Discussion / Re: Mach3 and a server
« on: October 04, 2011, 02:33:39 AM »
May be an idea to run Driver Test.exe and see what happens  ;)

Tweakie.

5229
General Mach Discussion / Re: screwed up sign
« on: October 04, 2011, 02:27:44 AM »
May be helpful if you post the dxf and GCode for the sign. (The problem could be with your machine or setup).

Many are using VCarve now - it is an excellent product IMO.

Tweakie.

5230
General Mach Discussion / Re: Spindle speed control - serial port
« on: October 03, 2011, 12:25:17 PM »
I just read the instructions.
Texas don’t actually tell you how to set up Mach they just let you download an xml but then say that it will not be configured for your own machine so you should make a note of your original settings (ports and pins, motor tuning etc) then re-enter all your data into the new xml.
Would be much easier if they just described the setting up details but as they say in their instructions this would be too difficult for them to do and take too much time.
They also say they have a small program that will combine two xml’s and make life much easier but this is not yet available.
Very strange organisation this Texas Microcircuits.  ???

Tweakie.

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