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circles aren't circles

Posted by Hallestman

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Hallestman

circles aren't circles
September 15, 2013 08:31PM

Registered: 11 years ago
Posts: 15

I have a prusa i2. my circles are footballs. it is deforming on the y axis. can i get some help.

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demetris

Re: circles aren't circles
September 16, 2013 08:28AM

Registered: 11 years ago
Posts: 90

Check this link [www.reprap.org]
Also are your X and Y axis step values in the firmware correct? Try to calibrate them.

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tleneel

Re: circles aren't circles
September 18, 2013 10:21AM

Registered: 12 years ago
Posts: 206

demetris Wrote:
-------------------------------------------------------
> Check this link
> [www.reprap.org]
> ictorial_Guide#Circularity
> Also are your X and Y axis step values in the
> firmware correct? Try to calibrate them.

That or your belt is loose.

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RobA

Re: circles aren't circles
December 11, 2013 03:57PM

Registered: 12 years ago
Posts: 81

(American) Football shaped circles are a sign of mechanical backlash. Either as tleneel suggests belt(s) too loose, or a pulley is slipping on a motor shaft.

-Rob A>

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Re: circles aren't circles
December 14, 2013 02:49PM

Registered: 10 years ago
Posts: 4

I have the same trouble.
And my X and Y axis seem well calibrated.
Depending on where the circle is printed on the bed, the result may be good or bad.
I begin to suspect bad roundness or bad shape of my printed pulley on Y axis.

Edited 1 time(s). Last edit at 12/14/2013 10:03PM by JG.

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jzatopa

Re: circles aren't circles
December 15, 2013 03:23PM

Registered: 11 years ago
Posts: 334

Usually when I have this problem it turns out to be a lose pulley. Make sure all your pulleys are securred properly.

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