#Massive layer shift

13 messages · Page 1 of 1 (latest)

mint isle
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So I've got an issue. My 2.4 seems to (not all prints, but many) do a major layer shift after about 40 or so layers (not the same layer every time). It's a massive shift, not just normal layer shift (see pic). The printer literally loses it's location and I have to re-home it. The shift is always in the same direction (towards front and right). I have checked belt tension and don't think it's that. The shift is always the same amount as well. Any ideas?

bold surge
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What motors are you running and at what amps? Its probably that theres just a particular move in that gcode that's exceeding the printers motion ability so it throws it off in about the same spot every time.

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On an LDO kit with 0.9° motors at the typical "default" of 0.8 Amps a 10k acceleration at 500mm/s is almost certainly past the limit

mint isle
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Hmm. I had lowered the amperage to 0.78 (see below, all my steppers are set the same):

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##  Make sure to update below for your relevant driver (2208 or 2209)
[tmc2209 stepper_x]
uart_pin: PC4
interpolate: false
run_current: 0.78
sense_resistor: 0.110
stealthchop_threshold: 0
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I'm assuming going lower is warranted as a try and lowering acceleration? Which one to go with first rather than changing multiple variables?

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Also, using stock speeds in Orca:

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And thank you for the insight @bold surge

strong ruin
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Lower your travel 5k see if anything changes

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Had a bad motor on a v0 lowering all my accels was the answer till I got new motors then everything was good.

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And disable stealthchop.

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You can also try increasing motor amps. Was told the other day .98 is the exact sweet spot for 2209's. Try it out but make sure your motors are not running to hot. My moons seem fine so far