Circles are oval

Post Reply
satoer
Posts: 436
Joined: Mon Oct 01, 2012 8:00 pm
Location: Netherlands

Re: Circles are oval

Post by satoer »

Slipping pulley's etc. will not make the plate go further than programmed. And this will extrude filament all over the place.
My Felix 1.5 printed designs on Thingiverse
E3D V6 Hot end upgrade for your Felix
Tweezer bracket for your Felix
Led bar upgrade for your Felix

angryangel
Posts: 110
Joined: Sun Mar 31, 2013 11:01 am
Location: Germany near Heilbronn / Heidelberg
Contact:

Post by angryangel »

is it possible thet the stepcouter in the motr is demaged and it always loose teh same steps??

satoer
Posts: 436
Joined: Mon Oct 01, 2012 8:00 pm
Location: Netherlands

Post by satoer »

He had switched the motor's, the problem stay's on the same axis.
My Felix 1.5 printed designs on Thingiverse
E3D V6 Hot end upgrade for your Felix
Tweezer bracket for your Felix
Led bar upgrade for your Felix

kimmoli
Posts: 62
Joined: Fri Mar 08, 2013 1:15 pm
Location: Finland

Post by kimmoli »

Felix 1.5 ?

Try to swap the stepper driver boards.

keinarsson
Posts: 13
Joined: Mon Apr 08, 2013 9:31 am

Post by keinarsson »

well, just to clarify.
I swapped the axis and the problem stayed o the same motor.
so it could be the motor?

kimmoli
Posts: 62
Joined: Fri Mar 08, 2013 1:15 pm
Location: Finland

Post by kimmoli »

Loose solder joints where the wire is extended?

Hugues
Posts: 270
Joined: Thu Apr 04, 2013 5:36 pm

Post by Hugues »

Hi Keinarsson,

did you fix your "oval circles" problem ?

I started to have the same problem today, or at least , it started in the past few days maybe.

X axis is ok, Y axis turns out 12% longer than CAD drawing !?!?

I will play with the Y scale ratio, but this is strange.

Lately i tightened the Y belt, but it seems to move normally. Strange.
Hugues
Regards from Switzerland

Hugues
Posts: 270
Joined: Thu Apr 04, 2013 5:36 pm

Post by Hugues »

I had Keinarsson offline today, he fixed his problem by changing the firmware settings.

So i tried to do the same and it worked, here is how i did it (this is a workaround, the root cause of my problem is still undefined):

- first you need to measure how "long" or "short" is your print in one axis and turn this into a ratio (ex your part should be 100 but it is 105, correction ratio 100/105 = 0.95238)
- then i when to repetier menu / config / Firmware EEPROM settings
- there i modified the Y axis steps per mm by multiplying it by the correction ratio
- then click on save to EEPROM

and it worked. just in case this is not the correct way to do it, note down what are the values before you change them, then you can always go back in the future if need be.

After i saved the figure, i brought the print head on the bed to have a little extrusion dot, then moved the head 100mm, then lower to have another extrusion dot, then measured the distance between the two dots. Repeat procedure above until you have exactly 100 mm.
Hugues
Regards from Switzerland

angryangel
Posts: 110
Joined: Sun Mar 31, 2013 11:01 am
Location: Germany near Heilbronn / Heidelberg
Contact:

Post by angryangel »

Thanks Hugues i had the same problem and used the same solution but dose anyone know waht causes the problem??

hoolito
Posts: 95
Joined: Wed Feb 27, 2013 7:15 pm

Post by hoolito »

Hi,

Just for the record, I had the same problem this week (extremely oval circles, but a consistent error) and fixed it changing the EEPROM settings. Could not find anything online about the cause.

Cheers,
Julian
Felix 2.0

Post Reply