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Messages - Bodini

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General Mach Discussion / Re: Mach3 to VFD rpm difference
« on: October 18, 2013, 10:28:26 PM »
Have a look here --> http://www.machsupport.com/forum/index.php/topic,18580.0.html

Worked for me!

Or it that's not applicable, there was a parameter in my VFD that was limiting the max speed.  I had troubles going past a certain RPM until that was set.

General Mach Discussion /
« on: October 18, 2013, 03:22:57 PM »
What does your gcode for the circles in question look like?

General Mach Discussion / UseDiam parameter
« on: August 11, 2013, 11:03:56 PM »
I was having heaps of trouble getting a 4th axis switched over to a different machine.  Combined moves like G1 X1 A360 F50 were really slow.  On previous setups, this would turn at about 3000 in the feedrate dro.  Changing the number in the "Rotational Radius" DRO was NOT affecting it (and I knew it should be).  I checked the new XML to the previous XML's and found that the parameter "UseDiam" was set to 0.  Turned it on (1) and everything was back to normal.  Sooooo...

Is UseDiam parameter set somewhere in Mach UI and I do not see it?  A tick box in a pulldown or summat?

Edit: By the way, finding that parameter would have been an impossible task without the "MachProfile" program by K. Dietz! http://www.kd-dietz.com/klausphp/index_eng.html  Thanks Klaus! (hope I got that name correct)

General Mach Discussion / Re: Interested in Low Power Laser Engraving
« on: March 06, 2013, 09:30:14 AM »
Thanks John,  I have sent you an email.

General Mach Discussion / Re: Interested in Low Power Laser Engraving
« on: March 05, 2013, 09:03:20 PM »
Thanks John,

I just want to know what to buy and the best way for it to be hooked up.  This laser would be mounted onto my existing small gantry router and used for 4th axis engraving.  My electronics experience is limited to picking out the right resistor for an led and thats about it.  ;)  I have just finished rewiring a retrofit machine (a 3'x6' holhzer gantry router) so wiriring and whatnot is done easy enough.  I also have a manual bridgeport mill and asian lathe, so making up a holder for the laser is no prob.

I look forward to some advice!  ;D



General Mach Discussion / Re: Interested in Low Power Laser Engraving
« on: March 05, 2013, 08:02:31 PM »
Just remember those pretty lights will burn your eyes out in a flash. Safety first.

Just a thought, (;-0 TP

Yes, I have been made aware of the eye dangers.  The other danger is reading WTH the guys like John Champlain are doing... I may have suffered brain damage just by trying to follow along. ;-)

General Mach Discussion / Re: Interested in Low Power Laser Engraving
« on: March 05, 2013, 07:59:50 PM »

Look here to see where we are with the art today.


Please join the forum.  It's Hungarian, but we have an English section, and Google translate takes care of the rest.

It is easy to get started, but does take a little investment.

John Champlain

Hi John,

Tweakie sent me to that thread too.  It's pretty impressive.  All i want is simple line work burned!  I'll join and hope to get started in the right direction.



General Mach Discussion / Interested in Low Power Laser Engraving
« on: March 05, 2013, 04:36:17 PM »
Hi all,

I would like to do some "low power laser" engraving on wood, such as Tweakie shows on his site (http://www.cooperman.talktalk.net/files/18.htm).  I contacted Tweakie and he says that the equipment available now is better than it was when he did his work shown.  Well I don't know a dang thing about lasers of any kind and would really like to see what anyone has used for this or tell me what would work.  All I am looking to accomplish is a basic wood burning pen effect, nothing fancy like lithoplanes.  Help!  :)


General Mach Discussion / Re: Reference all home
« on: February 27, 2013, 07:52:59 AM »
FWIW,  I had terrible noise on my encoder lines (twisted pair, foil shielded) only when I DID ground the drain wire.  Go figure!

Documents / Re: Spindle speed setup StepDirection VFD
« on: February 10, 2013, 11:28:15 PM »
This is a great post.  I'm so happy to have gotten this straightened out!  I don't know if you are still interested in the results as you had asked for, but I wrote mine down for you as I wanted to see the results anyway.  Here they are:

  • Sspeed as commanded in Mach = Actual as measured with a digital tach, rounded to nearest hundred
  • S1000 = 850
  • S3000 = 2700
  • S5000 = 4600
  • S7000 = 6800
  • S9000 = 8700
  • S10000 = 9500
  • S11000 = 10500
  • 13000 = 12700
  • 15000 = 14300
  • 17000 = 16900
  • 18000 = 17990 (Max Speed)

FYI, this is a wood router using a CNC4PC C6 Spindle board, a Fuji Frenic-Mini VFD, and a Teknomotor 2.0kw spindle (min speed 500, max speed 18000).

Thanks again!  ;D

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