Bunnzilla: calibration issue - Page 3
- JohnB.
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Looking at your photo of your face plate it looks like the bearing/adjustment screw end sits flush with the face plate recess area?? On mine the entire body of the bearing is out beyond that recess face.
LMWDP 267
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Thanks John. Do you mean the grind adjustment screw, in this photo? userpix/41652_pxl_20210322_044939027_hb5940LU.jpg In that photo, the grind adjustment screw was unscrewed/loosened as much as possible. The black dial would move closer to the dial plate as I tightened it. I'm not sure if that's what you mean, we may be talking past each other.
About moving the motor assembly backwards. Another user suggested that the outer burr carrier may be grinding the back of the face plate. I did find metal shavings and perhaps scratches on both parts, so they may be right. Moving the motor assembly backwards, I was thinking, might be a way to add more space between the parts to prevent that contact.
About moving the motor assembly backwards. Another user suggested that the outer burr carrier may be grinding the back of the face plate. I did find metal shavings and perhaps scratches on both parts, so they may be right. Moving the motor assembly backwards, I was thinking, might be a way to add more space between the parts to prevent that contact.
"All people by nature desire to know" -Aristotle
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I tried calibrating/zeroing, starting by adjusting the calibration screw so it was about 90* off of touching, trying to follow what you did. The faceplate was tightened evenly until there was no screw movement with light force.leftiesrule wrote:I remember having a similar problem after making my Mini-Bunnzilla... There was metal fines in the grind chamber too. I came to the conclusion that the calibration screw was so far out that the burr carrier was wobbling in place and either jamming or dragging on the grind chamber. My problems went away after tightening that calibration screw...
-Adam
Calibration seemed to be working, but then the grinder went haywire again, grinding itself and sending metal dust flying -- video here
http://www.youtube.com/watch?v=doZIu3WBwL8
You can hear a change when the "grinding" starts, when metal dust started to fly. It does not seem like burr churping, and it didn't stop after I loosened the burrs.
Metal dust - lots in screw holes on outer side of the outer burr carrier, seems it is the carrier grinding the grind plate. Shouldn't the calibration screw pressing against the burr rotor cup on the outer burr carrier prevent that??
"All people by nature desire to know" -Aristotle
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What direction are you turning the grind adjustment screw in your most recent video?
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- Posts: 246
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