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shapeoko 2 1M x1M help

Posted: Mon Feb 08, 2016 7:38 pm
by op117
after up grading my 250mmx250mm shapeoko to a 1Mx1M my Y axis is skipping at high feeds.
the way it skips is like it walk left / right thin loses it place on a job when i run a lower feed in the same job.

whats the best way to fix this?

the belts are tight.

skips after 30 in/min

could not find right threads for the old 2 any more or help threads

Re: shapeoko 2 1M x1M help

Posted: Mon Feb 08, 2016 7:47 pm
by WillAdams
You may need to reduce feed rates and/or acceleration.

For the larger machines, I believe that 9mm wide belts are a big help.

Re: shapeoko 2 1M x1M help

Posted: Mon Feb 08, 2016 7:58 pm
by op117
what causes the belts to jump not enough tooth's catching or are the belts flexing?

Re: shapeoko 2 1M x1M help

Posted: Mon Feb 08, 2016 8:16 pm
by WillAdams
The SO2 doesn't have as much belt engagement as the SO3, and the longer belt means that belt tension will vary more at the center.

More information at: http://www.shapeoko.com/wiki/index.php/ ... nd_Pulleys

Re: shapeoko 2 1M x1M help

Posted: Thu May 05, 2016 1:14 am
by op117
up graded to 9mm belts and no luck here is a video of it

https://www.youtube.com/watch?v=OcXiIyY ... e=youtu.be

the belts are right and i adjusted the motor power a little thinking it was that but no luck
any ideas?

also it done this before the 9mm upgrade

Re: shapeoko 2 1M x1M help

Posted: Thu May 05, 2016 1:34 pm
by bharbour
If it's the Y axis...what I'm taking to mean the axis with the two Nema17's driving it, then you might have a mismatch in belt tension between the two. Park your Y axis somewhere in the middle of the rail and pluck each belt like a string. Listen to see if they're basically the same pitch. If not, adjust until they are. Just my humble opinion...

Re: shapeoko 2 1M x1M help

Posted: Thu May 05, 2016 2:32 pm
by WillAdams
What we have on the wiki is at:

http://www.shapeoko.com/wiki/index.php/ ... he_Machine
http://www.shapeoko.com/wiki/index.php/ ... leshooting
http://www.shapeoko.com/wiki/index.php/ ... leshooting

If the information and techniques there don't help, contact tech support at the place you bought your machine from.

William