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Messages - Chris.Botha

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191
this was a bit of fun.. i tested a new fixture from Finland... no preperational moves.. just trusted mach fixture offsets to work right.

how can we get around the filename issue on the forum, we all own digital cameras so everytiem i post from my camera someone else has already posted with that image name requiring me to repost from scratch after renaming my files?


192
thanks man. i did this photo montage to show how work was done precad.. lol.. the good old days.. i had to make this by hand yesterday because of the time factor involved.

this of course has nothing to do with mach or mills but figred would be interesting none the less as a comparative look at the production process...




193
this was initially printed because i didnt like the angles involved.. the "thing" that arrived back post casting was not worth even removing from its packet.. i did the job properly on the mill..

lesson learned..

nice ring.. 1.74 ct stone with some mellee..

194
few more finished..

this one got lost and eventually found its way back to me.

195
well done!

196
General Mach Discussion / Re: Not Beef Jerky.. Just Jerky...
« on: August 24, 2009, 05:30:52 PM »


Exactly which CV setting are you talking about in the Mach3 general configuration?

RICH



197
General Mach Discussion / Re: Not Beef Jerky.. Just Jerky...
« on: August 24, 2009, 04:09:23 PM »
steppers :)

ok, im going to pretend i understood all that and go away now...  ;)

thanks , will digest and poke around under the hood later tonight i hope


198
General Mach Discussion / Re: Not Beef Jerky.. Just Jerky...
« on: August 24, 2009, 03:46:17 PM »
thanks for the info guys..

so basically the first input I got on tuning the motors via the on-board potentiometers was right too.. different way to achieve same result?


199
Mach3 under Vista / Re: Vista 64bit
« on: August 24, 2009, 05:43:20 AM »
i spent an entire day beating myself up trying to get vista64 to play nice with me.. I crashed it probably 20 times with my various array of bizarre video hardware capture devices and it still refuses to update properly from windows update site.. (now im using a hack update installer.. on a legit box.. pffffffffffff)  not to mention having to hack to get back into my own pc cuz i got locked out by a funky update glitch ... double pfffffffffffft...)

see this stuff, and be warned, happens randomly to vista 64...  will work great and suddenly you reboot after an update and you poked.. kill automatic updates.. do it.. save yourself this pain..

http://social.answers.microsoft.com/Forums/en-US/vistawu/thread/2f70b13c-9db4-4bf9-90ee-7ca63a809973



anyway i digress...

Typically the things i figured would NEVER work all did.. rhino, matrix . and yes, mach.. worked great.

I have never tried it on vista32 but since it will work on this POS operating system I am  pretty willing to bet it will work on that one too..

this exersize has been a fun way to waste a day of my life.. will be downgrading back to xp32 this weekend :)




200
General Mach Discussion / Not Beef Jerky.. Just Jerky...
« on: August 24, 2009, 05:32:21 AM »
Hello all...

I have picked up a problem which is neither a mill bug nor a Mach bug but an "Understanding Bug"..

i notice that at about 700mm/min and up I get severe vibration running through my setup, to the extent that i can visibly see my Z column shaking.. My first port of call suggested i break open the coling fins on my controllers and tune my motors with the two purple pots in there to take away the  "harmonic???" ...

having further discussed this issue with Jack, my maufacturer we ascertained that i can rapid at 1150mm/min with no vibration at all...

so...

I only get this vibration when i output a path at those speeds with big tools with big steopvers  (yes even if im only cutting air)..  I can actualy jog at faster speeds perfectly smoothly...  Changing velocity and acceleration change overall zippiness but it stays the same issue once I start cutting a path)

Now.. Jack is a smart and easygoing guy, basically a GREAT guy.. he has suggested that I change the CV (constant velocity)  value away from its current 0.06 to 0.5 and test that rather than start poking around with the pots under the hood...  Jack is a real busy guy and i felt bad asking him to explain to my why this course of action would help...


anyone care to enlighten me? had similar issues?

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