No movement after G00

[slatronic]

Having some issues today. For some reason my machine doesnt want move back to zero after G00. What is happening is it will make the cut at feedrate then G00 pull Z up to .4" then it wont move back to start of cut. It happened 5 or 6 times today. Just this one cut. Everything else today has seemed to work just fine. But after this one particular cut it would go for awhile then not go. Then I reset, work for awhile trying to finish cut then stop again. Havent run a ton of parts on this machine but never ran into this problem. Really frustrating to have to reset zero continually and having hand on Estop the whole time.

My guess is maybe adjust kernel rate. The machine is well oiled. Checked that to make sure my oiling system is still working. The PC has been tuned as much as I think I can optimize it for Mach3. Any suggetions besides rewriting gcode.

Jeff

[holbieone]

There is a similar post as yours going back a few weeks ago

[slatronic]

thx i'll try to find it. Still up for suggestions though

[ger21]

Is there an error message?
What does the g-code look like?

[shey_med]

Hi
Im seyd. few days before i completed home made CNC router machine with MDF frame and lead screw.The machine size is 12x24 inch. Now i plan to build a large CNC router (4x8 feet) machine with metal frame and instead of lead screw i want to use timing pulley and belt.Advice me which timing pulley and belt type is better for large machine , what are major points that i have to consider.Please share with me your experience and instruct me to build a better CNC router machine.

[slatronic]

Is there an error message?
What does the g-code look like?

Heres a chunk of it.

X-0.0028 Y-1.0887 F38
G00 Z0.4
X4.5472 Y-1.1388 (stalls on this line here)
Z-0.29
G01 Z-0.415 F5

This is just one spot it did it. But 5 or 6 times it has stalled trying to make that move or similar just a little different X and Y numbers. Then Z will lower and try to continue. Tried again not to long ago starting from there and it stalled again on that line. Arghh!!!!

thanks for the help

[slatronic]

Hi
Im seyd. few days before i completed home made CNC router machine with MDF frame and lead screw.The machine size is 12x24 inch. Now i plan to build a large CNC router (4x8 feet) machine with metal frame and instead of lead screw i want to use timing pulley and belt.Advice me which timing pulley and belt type is better for large machine , what are major points that i have to consider.Please share with me your experience and instruct me to build a better CNC router machine.

Seyd,

Try looking at the Router forum inside of main CNCzone page. There is a large list of different sub forums that will be better suited to answer your questions. There are a few specific Router forums for you to choose

For example
DIY-CNC Router Table Machines - CNCzone.com-The Largest Machinist Community on the net!

[mactec54]

slatronic

There is some missing code, what do you want to do with the Z-0.290 move rapid or a feed move, You have to tell it what to do either a G1Z-0.290F15. or a G0Z-0.290

[slatronic]

slatronic

There is some missing code, what do you want to do with the Z-0.290 move rapid or a feed move, You have to tell it what to do either a G1Z-0.290F15. or a G0Z-0.290

Its not stalling on the Z move down just the X and Y rapid move back to start of cut. I may be mistaken but I think a G00 move is a modal and will stay active until I call up a new mode such as G01. Just wondering if the rapid of the 2 axis is causing issues. Maybe try to remove rapids in this section of code? Then maybe a retune of motors? Can I just turn down accelaration maybe?

[mactec54]

slatronic
X4.5472 Y-1.1388 (stalls on this line here)

Add a G0 to this line to, or a G90G0, if your control is not set up for G90 as default

[ger21]

Try running in exact stop mode?

What version of mach3 are you running? Some versions have a CV bug that may be causing this. It's supposed to be fixed in the latest development version.

[slatronic]

Gerry,

I was running 3.042. something. I updated and I'll see how it goes. Now using 3.043.022. Should I try the 3.043.058 build?
Hopefully this fixes things. Then I'll try exact stop mode if all else fails.

Thanks
Jeff