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Messages - Tweakie.CNC

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6231
Thanks for sharing Brian, that's great work you have done.
How does the glass scale dro's compare with the Mach dro's - are there any small discrepancies of position ??

Tweakie.

6232
General Mach Discussion / Re: charge pump circuit
« on: December 31, 2011, 05:49:49 AM »
Hi Pradeep,

The Gecko circuit has been reproduced here as well  http://www.machsupport.com/documentation.php

Tweakie.

6233
Show"N"Tell ( Your Machines) / Re: Spindle water cooling system 2.2KW
« on: December 31, 2011, 05:10:01 AM »
Hi Juan,

Thanks for the info, that is most interesting.

(I don't think I would want to put the 'Feser One Non Conductive' to a real electrical test though  ;D )

Tweakie.

6234
General Mach Discussion / Re: Using Oscilloscope with Mach3
« on: December 31, 2011, 04:54:06 AM »
Hi Vogavt,

Just one tip - If you are using a mains operated oscilloscope (without an autotransformer or other means of isolation) make sure the earth connection of the probe is only connected to an earth point on your machine.  Shorting various unknown points to earth while testing can ultimately spell disaster.  :'(
The portable, battery operated, hand held scopes are in may ways a lot safer to use when it comes to trouble shooting as they have a floating GND and the above does not apply.  ;)

Tweakie.

6235
Show"N"Tell ( Your Machines) / Re: Spindle water cooling system 2.2KW
« on: December 30, 2011, 11:16:03 AM »
Great idea Juan. Do you have any information on the temperature controller you are using ??

Tweakie.

6236
Tangent Corner / Re: X-Mass Gift for my son
« on: December 30, 2011, 07:36:38 AM »
Sorry to say this Brian but it looks like he is growing real fast.
From that last picture I think you are going to be building a new one for next year.  ;D

Tweakie.

6237
General Mach Discussion / Re: Y-axis "creep"
« on: December 30, 2011, 07:28:38 AM »
Quote
Yes, config, ports and pins, motor outputs. Make sure that all your axis motors (X, Y & Z) step and direction, are either all active high or all active low.

I have found that if you have a mixture of some active high and some active low, it results in the creep which you are seeing.

Neptune,

Whilst I do not doubt you cured your problem in the way in which you say there is really no evidence to support the above statement. Mach allows a mixture of active HI / LOW without issue.

Tweakie.

6238
General Mach Discussion / Re: Spindle output messes up tool change
« on: December 30, 2011, 07:18:03 AM »
As Graham says, it would seem logical that a tool change would be prohibited whilst the spindle is actually running.  ;)

Tweakie.

6239
General Mach Discussion / Re: CNC Dictionary
« on: December 30, 2011, 07:12:35 AM »
"WTF" comes naturally with my engraving.  ;D

Tweakie.

6240
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: December 29, 2011, 09:32:54 AM »
Hi Brian,

My electromagnet was a gift from Andrea (Robotmar) http://www.robotfactory.it/Cnc_indexMain.htm (look under Micropunti) who had the first successful results using a magnet with the Mach Impact / Laser plugin. He shows the construction on his website or in this thread http://www.machsupport.com/forum/index.php/topic,16446.0.html but other than that I have no specific technical information relating to the field properties / iron saturation etc.

Hope this helps,

Tweakie.


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