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Problem setting E-steps [SOLVED]

Ragdollcat

Problem setting E-steps [SOLVED]
August 27, 2015 08:47AM

Registered: 11 years ago
Posts: 6

Hi, I have a sunhokey prusa I3 2015 and I'm having problems setting the e-steps. I divided the amount I want it to feed with what It's actually feeding and multiplied that number with my current setting like this: (100mm/57mm)*80.5 = 141,2 so I changed the E-steps/mm to 141.1 and extruded 100mm again but this time it extruded 140mm confused smiley

Edited 1 time(s). Last edit at 08/27/2015 02:10PM by Ragdollcat.

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dc42

Re: Problem setting E-steps
August 27, 2015 09:01AM

Registered: 12 years ago
Posts: 14,691

My guess is that when you did your original test, the extruder skipped some steps, which is why you only got 57mm instead of close to 100mm.

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

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Ragdollcat

Re: Problem setting E-steps
August 27, 2015 09:08AM

Registered: 11 years ago
Posts: 6

I don't have my bowden tube attached so I don't think it skipped

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Ragdollcat

Re: Problem setting E-steps
August 27, 2015 09:30AM

Registered: 11 years ago
Posts: 6

Can an motor skip even if it's spinning freely?

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dc42

Re: Problem setting E-steps
August 27, 2015 09:55AM

Registered: 12 years ago
Posts: 14,691

Quote
Ragdollcat
Can an motor skip even if it's spinning freely?

Perhaps the filament wasn't unwinding freely from the spool?

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

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Ragdollcat

Re: Problem setting E-steps
August 27, 2015 11:16AM

Registered: 11 years ago
Posts: 6

I don't think it's a mechanical issue.

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imqqmi

Re: Problem setting E-steps
August 27, 2015 12:57PM

Registered: 11 years ago
Posts: 756

Just continue a few more times.
100/140 * 141.1 = 101

You'll home in on the correct number.

If at some point you don't get consistent results, check motor current, slipping gears etc.

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Ragdollcat

Re: Problem setting E-steps
August 27, 2015 02:08PM

Registered: 11 years ago
Posts: 6

Thanks alot!! I had to do it about 5 times and now I get exactly 100mm every time smiling smiley

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imqqmi

Re: Problem setting E-steps [SOLVED]
August 27, 2015 03:59PM

Registered: 11 years ago
Posts: 756

Excellent! Congrats! smiling smiley