1 Topic by dougwillmschen

  • dougwillmschen
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Topic: Help with Z axis binding(Think its a firmware issue)

Hi, I was hoping for some help. I am using a da vinci  1.1 plus converted to use marlin RC8 with a ramps 1.4 board. I have upgraded the extruder to a E3D V6 and just installed a Bltouch auto bed leveler(no clones).
I am having an issue with the Z axis binding when homing only, it goes up and down the entire length of the threaded rod without issue when not homing. Another weird bit is it only binds sometimes also If I manual spin the rod the z axis starts moving again.

My question is can a software issue cause this? When I get off tonight I am going to try messing with the steppers pot. Any chance that could help? Any other ideas?

Thanks

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2 Reply by wardjr

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Re: Help with Z axis binding(Think its a firmware issue)

Homing speeds can be set independently of manual movements or print speeds.  Adjusting the VREF may solve the problem and should be done first.  If that doesn't help you may simply need to reduce your z home speed.

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3 Reply by dougwillmschen

  • dougwillmschen
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Re: Help with Z axis binding(Think its a firmware issue)

Thanks ill try messing with that tonight. Just so i am a 100 percent, running the steppers too slow or fast can cause binding right? if so do you know if binding occurres more often when going too slow or too fast.

4 Reply by wardjr

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Re: Help with Z axis binding(Think its a firmware issue)

Trying to accelerate or run a motor too fast can cause issues.  Basically any friction will be exaggerated at higher speeds.  That being said, high speeds will also show other problems such as incorrect VREF.  In your case probably too low of voltage.  Remember when adjusting VREF, a little goes a long way.  Always use a non conducive screwdriver to turn the POT.

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

wardjr's Website

5 Reply by yizhou.he

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Re: Help with Z axis binding(Think its a firmware issue)

Is your problem solved by adjusting the VREF?

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