1 Topic by Emily185 (edited by Emily185 2021-08-24 08:33:07)

  • Emily185
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Topic: Issue with auto leveller sensor

Hi All,

So I have an ET-I3 which came in a kit form - managed to build it and everything appears to be fine - I have set the auto leveler sensor to about the thickness of two playing cards from the print bed, and it appears to be working well.

However (and isint there always one of those?) when I go to print a model, I can see the light on the sensor come on..... but the print head seems to ignore it, and the extrusion heads impact the print bed. TXT Loser lover ringtone

I have adjusted it so that the sensor kicks in with the head about a cm off the print bed, just to test, but it still occurs...

I don't know if this is a hardware issue or a software issue - I am using Cura, and trying to print a whistle - the stock file that came with the printer - I don't yet know enough to know if perhaps the software is dictating the start height, or I have something else out of line...

Any help would be much appreciated
https://www.youtube.com/watch?v=ewqIYgBWFbQ
Cheers,

Emily185's Website

2 Reply by wagnmkr

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Re: Issue with auto leveller sensor

Emily185 wrote:

Hi All,

So I have an ET-I3 which came in a kit form - managed to build it and everything appears to be fine - I have set the auto leveler sensor to about the thickness of two playing cards from the print bed, and it appears to be working well.

Is the two playing card thickness the height to print at, or just for the leveling function? If so, I doubt that you will get a print to stick. Nozzle to bed height for printing should be about one regular printer paper thickness.

I don't have the auto leveling feature, so sorry, no suggestions.

I was cut out to be rich ... but ... I was sewn up all wrong!
Wanhao Duplicator I3 Plus with glass bed, MK10 All Metal Hot End

3 Reply by carl_m1968 (edited by carl_m1968 2016-11-17 19:50:44)

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Re: Issue with auto leveller sensor

wagnmkr wrote:
Emily185 wrote:

Hi All,

So I have an ET-I3 which came in a kit form - managed to build it and everything appears to be fine - I have set the auto leveler sensor to about the thickness of two playing cards from the print bed, and it appears to be working well.

Is the two playing card thickness the height to print at, or just for the leveling function? If so, I doubt that you will get a print to stick. Nozzle to bed height for printing should be about one regular printer paper thickness.

I don't have the auto leveling feature, so sorry, no suggestions.

To be exact your print height should be half or less of your desired print height. I go with normally half to keep the first layer from bulging as much and requiring more post finishing. I use thickness feeler gauges that you can get at an auto parts store or amazon.

https://www.amazon.com/uxcell-Metric-Th … amp;sr=1-8

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

4 Reply by dubbsd

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Re: Issue with auto leveller sensor

Carl
Do you heat the nozzle and bed to temp before leveling?

Thanks
Dale

Ultimaker S3.

5 Reply by carl_m1968

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Re: Issue with auto leveller sensor

dubbsd wrote:

Carl
Do you heat the nozzle and bed to temp before leveling?

Thanks
Dale

Yes I do.  I do so to account for thermal expansion which could be significant between the bed and head.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

6 Reply by Tin Falcon

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Re: Issue with auto leveller sensor

I have an I 3  that was not holding bed level . seemed like i had to adjust for every print. 
There was flex in the vertical part of the machine . I added braces . flex gone bed holding solid.
the flex in the frame was changing  the distance from the nozzle to the bed . Not a lot but when you are talking fraction of a mm does not take a lot to mess up the first layer. 

The ET variant looks like there is lots of potential for frame flex.


Tin

Soliddoodle 4 stock w glass bed------Folger Tech Prusa 2020 upgraded to and titan /aero extruder mirror bed
FT5 with titan/ E3D Aero------MP mini select w glass bed
MP Utimate maker pro-W bondtech extruder
Marlin/Repetier Host/ Slic3r and Cura

7 Reply by Tin Falcon

  • Tin Falcon
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Re: Issue with auto leveller sensor

Are you homing the printer before starting a print ???

Soliddoodle 4 stock w glass bed------Folger Tech Prusa 2020 upgraded to and titan /aero extruder mirror bed
FT5 with titan/ E3D Aero------MP mini select w glass bed
MP Utimate maker pro-W bondtech extruder
Marlin/Repetier Host/ Slic3r and Cura