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Can tool offsets be changed while running a gcode program? IE. if you are running a bar pull job and need to make an adjustment midway thru the bar and don't want to pause the machine.

066 was a bad version. 062 was the lockdown version. It has its issues as well. If you are running a parallel port and Win7, mach3 can drop out and not respond requiring a restart. Don't have...

Loosing communication while sitting idle is definitely a Mach3-windows 7 problem. XP machines do not do it. I have a few of each. I much prefer to run parallel ports on my machines. Regarding the...

I normally don't post much. Really i don't post anything unless i have a problem i cannot solve which does not happen often. I certainly do not go out of my way to talk bad about anyone or a company....

Trying to bar pull with a qt8 with t2 control. Have the Chuck open and close working. How do you get turret to move with the Chuck open? We are getting a 216 alarm.

How do you get the turret to move with the Chuck open? We get a 216 alarm if you try to move in auto cycle with the Chuck open.

I just did some two weeks ago. I just drew the first fin, then translate between points. You can tell it how many times to translate it at what offset. To assign toolpath, you can just select...

I've got a Bridgeport mill that i converted years ago. I've had a problem for quite a while now but it's starting to get on me nerves. When the machine is homed out (x0 y0 z0) the glass scales read...

Well, i'm going to give my experiences here. I had an r8 spindle in my j head. I've used it alot with an impact style drawbar. It worked reasonable good, wore out a drawbar in about a year. Then i...

I've been hearing the term smoothstepper but haven't looked into it yet. Guess i'll be doing that this week. I can jog an axis at 200+ipm but if i move x and y together, the drives fault out. I've...

wow, i'm not getting anywhere near that kind of speed. I just changed x and y encoder cables to one piece cables that have the shields grounded to the case. Didn't make any difference. I could get a...

Noise and grounding is a plausible problem. I did a crappy, no i mean CRAPPY job on the wiring. I just didn't know any better when i did it. The i started fixing real cnc machines and saw how the...

wow, that's it. maybe my power supply is not the problem then. I've got almost twice the amps with one power supply, currently i've got two power supplys hooked up. This has got to be a problem...

what power supply are you using?

So these motors are rated at 4200 rpm. Are my calculations correct or am i not accounting for quadrature?
17,135 steps/unit
500cpr (2000quad)encoder

17,135/2000=8.5675 motor rotations per inch...

Ok, i put the theory to the test. I just wored the step/dir right from the db25 to the geckos, bypassing the BOB. No change for me, anyhting over about 120ipm made the drives fault. I can jog a...

I was thinking the same thing, the Geckos are isolated, why can't i take the step and direction signals right to the drive?

Well, i can jog a single axis at 200ipm but if i do a g28 with x and y at the same time, it usually has a problem over 120ipm or so. which puts it right in the 40-50khz range. I thought i had a power...

I'm using a cnc4pc C1G BOB. I knew i should have bought that scope i saw at an auction months ago.lol

yes, they are homeshopcnc motors. What exactly did you do to bias the optos correctly, i think i'm having the same problem. I'm no where near the kernal speed but can't get much over 100-120ipm...

I have my knee cnc'd. I've got two 250lb gas springs under it with a 850ozin peak 270ozin continuous servo with a 250cpr encoder. I replaced the original bevel gears with spiral cut units and put a...

I just upgraded my 1hp j head to a 2hp 56c motor. No, i'm not getting rid of the motor. I just wanted to offer my conversion experience. You have to get a step pulley with a 7/8 bore or bore your...

I'm digging this thread up from the past hoping that there was some positive outcome. We've got a Toyoda fa400 horizontal mill that is doing the same thing. Finish cuts are being run much, much...

I'm sure there is an easy way to do this but my brain is not in gear. I want to somehow tie all three axis together and make mach3 halt if any servo drive faults. Is it done by using the err/res...

Just a quick update, i mounted the 250lb gas springs and now put a servo on the knee. Initially, the servo couldn't even move the knee. (270oz continuous, 850oz peak). Now it moves it at 60ipm no...

Did you drive the screw thru the original bevel gears or make a new mount and drive the screw directly? Do you have a pic of the air cylinder size and location?

Boy, the internet sure makes the world a small place.lol. That is the kind of z axis i'm after. Can you give some details of the air assist. I assume you converted it to a ballscrew, what size? What...

Well, been a while since i posted. Man have i been busy making parts with my j-head. I've got a 2550oz stepper on the knee moving at a snails pace of 15ipm. I've decided i need to do something about...

Well after trying many things, i believe i've figured it out. My geckos are mounted on a heat sink located vertically in an enclosure. It didn't dawn on me that the main power switch is located about...

As usual, i spoke too soon. The x axis servo is still jumping. I'm going to leave the parallel cable disconnected from the break out board tonight and see if it still does it. Maybe it's in the g320...