Need some help to tweak the prints July 31, 2015 08:00PM |
Registered: 9 years ago Posts: 32 |
Re: Need some help to tweak the prints August 01, 2015 04:10AM |
Registered: 9 years ago Posts: 5,232 |
Re: Need some help to tweak the prints August 02, 2015 04:15AM |
Registered: 9 years ago Posts: 32 |
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o_lampe
Seems you have 20 tooth pulleys instead of 16 tooth. That would explain the 25mm/20mm ratio.
Does the nozzle scratch across the layers?
If not, then the current for one of the steppers is to low, that´s were the shifted layers come from. ( or printing to fast )
If it scratches, reduce flowrate or calibrate e-steps.
-Olaf
Re: Need some help to tweak the prints August 03, 2015 05:08AM |
Registered: 9 years ago Posts: 32 |
Re: Need some help to tweak the prints August 03, 2015 06:20AM |
Registered: 9 years ago Posts: 32 |
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dislegal
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it turned out to be the best test cube I've ever printed
And here I was, getting all cocky! Still have the sideway skippingOccurred after about layer 15-20 on this one.
Re: Need some help to tweak the prints August 04, 2015 03:48AM |
Registered: 9 years ago Posts: 32 |
Re: Need some help to tweak the prints August 04, 2015 03:57AM |
Registered: 11 years ago Posts: 153 |
Re: Need some help to tweak the prints August 04, 2015 03:59AM |
Registered: 9 years ago Posts: 32 |
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ianmcmill
Don't jump at my throat but are the pulleys all fastened? Are the belts all tight and fixed?
This layer shifting typically results from loose pulleys. Even though the cube printed nicely before.
EDIT
oops hit send too late.
Re: Need some help to tweak the prints August 04, 2015 04:03AM |
Registered: 11 years ago Posts: 153 |
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dislegal
After setting max jerk to 15, I still had layers shift. I have checked the tension of the belts - they seem right. Any tighter and it becomes difficult to slide the print bed. I have checked the pulleys and they seem tight on the motor axles.
After setting max jerk to 10, I had a successful print of a test Marvin without any layers shifting. Although he is a little droopy on the right as you can see.
Before I go adjusting the stepper driver voltages, what would be symptoms of too high volts? I wonder if they were set to 5.5v before I bought the printer, but when I bought it I swapped out the faulty 12v PSU for a 15v PSU - could this have caused a higher voltage at the stepper drivers (or is it regulated before it reaches them)...?
Re: Need some help to tweak the prints August 04, 2015 07:30AM |
Registered: 9 years ago Posts: 32 |
Re: Need some help to tweak the prints August 10, 2015 04:34AM |
Registered: 9 years ago Posts: 32 |
Re: Need some help to tweak the prints August 12, 2015 09:24AM |
Registered: 9 years ago Posts: 31 |
Re: Need some help to tweak the prints August 12, 2015 04:34PM |
Registered: 9 years ago Posts: 32 |
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ntoff
You getting that Mendel90 from a guy down the coast? If so I did that EXACT thing. Bought a k8200, hated it, bought a Mendel90, brilliant. K8200/3drag is such a terrible design.