Z axis goes up but not down! (Video included)

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philIam
Posts: 67
Joined: Sun Aug 17, 2014 7:13 pm

Z axis goes up but not down! (Video included)

Post by philIam » Sun Aug 17, 2014 8:28 pm

Hi,

I've trouble shooted everything (that i know of).

All the axis work even Z goes up but when it has to plunge down it just vibrates! As if there was a loose connection but there arn't any loose connections.

Here's what I have done:

I've ran the helloworld file and it worked great.
I have all the grbl settings set to the suggested values in the building start page
plunge rate: 2.5
feedrate 15

Odd behavior:
After i run the file and then hit -Z it acts like the homing button!

If i close out of USG restart connection it goes back to how it all was before.

Any idea of how to make this work? Makercam issue? grbl settings?


VIDEO: https://www.youtube.com/watch?v=xn5SPAAT2VQ

cvoinescu
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Re: Z axis goes up but not down! (Video included)

Post by cvoinescu » Sun Aug 17, 2014 8:42 pm

Up isn't great either: it seems to be losing steps. Try increasing the motor current.
Proud owner of ShapeOko #709, eShapeOko #0, and of store.amberspyglass.co.uk

philIam
Posts: 67
Joined: Sun Aug 17, 2014 7:13 pm

Re: Z axis goes up but not down! (Video included)

Post by philIam » Sun Aug 17, 2014 8:59 pm

It just started going down, but the down is like 2x as far as I suspected it to go. I'll try and update the current to be higher.

philIam
Posts: 67
Joined: Sun Aug 17, 2014 7:13 pm

Re: Z axis goes up but not down! (Video included)

Post by philIam » Sun Aug 17, 2014 9:03 pm

The Z is like going through the floor boards, I know I'm on the right scale - imperial. Maybe im doing something wrong with makercam?

wcpenney
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Joined: Tue Feb 11, 2014 12:50 am

Re: Z axis goes up but not down! (Video included)

Post by wcpenney » Mon Aug 18, 2014 12:19 am

Are your microstep settings set correctly everywhere?

philIam
Posts: 67
Joined: Sun Aug 17, 2014 7:13 pm

Re: Z axis goes up but not down! (Video included)

Post by philIam » Mon Aug 18, 2014 2:13 am

Success! The current had to be perfected.

BUT each time a hole or profile is pocketed or ran on it gets deeper. Could this be due to the stepdown function in makercam? How to make it cut at one depth for all passes? THANKS! EVERYONE :D :D

WillAdams
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Re: Z axis goes up but not down! (Video included)

Post by WillAdams » Mon Aug 18, 2014 2:19 am

Shapeoko 3XL #0006 w/ Carbide Compact Router w/0.125″ and ¼″ Carbide 3D precision collets

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