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Author Topic: CZ-1 2.0: problems, calibration and printing, part2  (Read 3960 times)

MEgg

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Bridge Testing
« Reply #15 on: May 08, 2017, 04:48:03 PM »
A recent print showed problems when printing bridges, I did try this before and do not remember what I changed.
Tests are here:
http://www.thingiverse.com/thing:546688
http://www.thingiverse.com/thing:124879

Results:




Still a bit of sagging, I had this already better.
« Last Edit: September 02, 2017, 04:58:08 PM by MEgg »
1st project: Dagu 5 Rover + Dagu - 4 Channel DC Motor + Red Back Spider robot controller + Raspberry B+
Chassis + wheels: https://picload.org/image/dggroior/20150831_028.jpg
current: https://www.keepandshare.com/userpics/m/a/r/k/usegg/2016-04/sb/img_3480-79682018.jpg

jinx

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Re: CZ-1 2.0: problems, calibration and printing, part2
« Reply #16 on: May 08, 2017, 05:08:11 PM »
what speed you at ? go faster my first thought
try this one
http://www.thingiverse.com/thing:476845  make a not which angle preformed best, then forever on. turn the model in the slicer to get that best result!
« Last Edit: May 08, 2017, 05:15:43 PM by jinx »
I build bots

MEgg

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Changed calibration after long time
« Reply #17 on: December 02, 2017, 12:15:34 PM »
To prevent too much dust in the printer I used this cover, which is a cover fo some outdoor grill:
https://www.amazon.de/gp/product/B01C682EPW/ref=oh_aui_detailpage_o09_s01?ie=UTF8&psc=1

After quite a long time I was trying the printer again.
There was no dust inside so the above cover works.
 :)

When trying the calibration points P0-P5 I realized that the calibration was changed somehow.
As you can see (partly) here the printer has a hexagonal heatbed:


This picture shows my normal setup with Kapton in the middle and blue tape at the right and left:


Here is a schematic showing the calibration points P0-P6 and the screws S1-S6 :


A Bosch Laser meter shows differences at the screws S6 and S2 in height, but the accuracy of this
meter is only +/- 1.5mm.
:-(

Jinx said I should use something like this :
https://www.amazon.de/dp/B01H035DRO/ref=sspa_dk_detail_1?psc=1

I will try to check if the heatbed is level in relation to the actuator.

As Jinx suggested I also tightened the belts here:

and the grub screws are ok already.
« Last Edit: December 03, 2017, 04:31:00 PM by MEgg »
1st project: Dagu 5 Rover + Dagu - 4 Channel DC Motor + Red Back Spider robot controller + Raspberry B+
Chassis + wheels: https://picload.org/image/dggroior/20150831_028.jpg
current: https://www.keepandshare.com/userpics/m/a/r/k/usegg/2016-04/sb/img_3480-79682018.jpg

MEgg

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Re: CZ-1 2.0: problems, calibration and printing, part2
« Reply #18 on: January 14, 2018, 01:09:24 PM »
As far as I remember Jinx said that with a dial indicator one can measure the levelness of the heatbed .

So I bought one of the cheaper ones:
https://www.amazon.de/gp/product/B01H035DRO/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

with 0.01mm accuracy.

Interior looks cheap:



and mounted it on the actuator:



There is quite some distance between the hotend and the tip of the indicator:




There was a website about how the levelness of the heatbed can be measured with this,
but I cannot find it anymore.
Any pointers?

Edit 21.1.2018: problem with that dial is, that it is too big.
It hits the rods of the X and Y tower when moving to P3.
:-(

I tried the paper method again this time with cold heatbed:
P0 X0,Y0       : Z= 1.69
P1 X-77.94 Y-45: Z= 1.69
P2 X-77.94 Y-45: Z= 1.52
P3 X0 Y90      : Z= 1.48
P4 X0 Y-90     : Z= 1.56
P5 X77.94 Y45  : Z= 1.45
P6 X-77.94 Y45 : Z= 1.58


So my guess is that Screw S1 and S6 are too high and have to be tightened.
I tightenend them a bit:
P0 X0,Y0       : Z= 1.66
P1 X-77.94 Y-45: Z= 1.63
P2 X-77.94 Y-45: Z= 1.51
P3 X0 Y90      : Z= 1.48
P4 X0 Y-90     : Z= 1.54
P5 X77.94 Y45  : Z= 1.43
P6 X-77.94 Y45 : Z= 1.58


So this seems to be the correct way to go.
« Last Edit: January 21, 2018, 01:50:22 PM by MEgg »
1st project: Dagu 5 Rover + Dagu - 4 Channel DC Motor + Red Back Spider robot controller + Raspberry B+
Chassis + wheels: https://picload.org/image/dggroior/20150831_028.jpg
current: https://www.keepandshare.com/userpics/m/a/r/k/usegg/2016-04/sb/img_3480-79682018.jpg

MEgg

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Re: CZ-1 2.0: problems, calibration and printing, part2
« Reply #19 on: January 14, 2018, 06:35:28 PM »
There were some questions about the cooling of the electronic in the base of the printer:

The brown fan at the top was added by me:



The mounts of  the rods work also as a stand:


therefore making an air gap at the bottom.
1st project: Dagu 5 Rover + Dagu - 4 Channel DC Motor + Red Back Spider robot controller + Raspberry B+
Chassis + wheels: https://picload.org/image/dggroior/20150831_028.jpg
current: https://www.keepandshare.com/userpics/m/a/r/k/usegg/2016-04/sb/img_3480-79682018.jpg

 

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