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TL;DR Clicking extruder and I think I am missing something here on calibrating the z-height all around the bed, not just the center.

Current Setup:
Rostock Max v3
.5mm Stainless Nozzle
Firmware 20170201 (Edit: I totally dislexed the firmware version)

Cura 2.31 with varying initial heights of .08, .1, .15, .2, .25.
Varying Print Speeds from 40mm/s up to 100mm/s
Varying hot end temps, 170, 175, 180, 190, 200, 205, 210, 220, 230

With multiple PLA brands: Hatchbox, Monoprice, MG Chemicals.

Up until now, I have just been printing small things. My first attempt at something over a few inches wide was a disaster and continues to be. I have been tweaking and printing the last few days with minimal change in my results. The middle seems to be just right (maybe even a little thin), and the further out from center I get, the higher the nozzle is. I also get clicking from the extruder during the first few layers to the point where I had to take it apart and clean it out from all the chewed up filament. Which I figured was either a temperature issue, the ptfe issue noted below, or a z height issue. (Not that I can find.)

http://forum.seemecnc.com/viewtopic.php?f=36&t=7361

I have read through that post multiple times trying to figure out what I am missing.

And I also have followed the recommendation here: https://seemecnc.zendesk.com/hc/en-us/a ... lament-JAM

I have ran the advanced calibration a few times and am within .05

I have manually adjusted my z height to around .08 as the auto calibration always sets it way to low. (Used a piece of paper that measured .08 on my caliper until it just barely dragged.)

I have attempted printing this disc so many times I have lost count, the results are always similar to the picture below. The center still appears to be thin, but if I raise the z-height anymore it doesn't lay properly at all. And the further outside of center the higher the z height appears to become.

Here's what the 2mm tall disc print from the strategy thread looks like.

JonIN3D wrote:TL;DR Clicking extruder and I think I am missing something here on calibrating the z-height all around the bed, not just the center.

Current Setup:
Rostock Max v3
.5mm Stainless Nozzle
Firmware 02022017

Cura 2.31 with varying initial heights of .08, .1, .15, .2, .25.
Varying Print Speeds from 40mm/s up to 100mm/s
Varying hot end temps, 170, 175, 180, 190, 200, 205, 210, 220, 230

With multiple PLA brands: Hatchbox, Monoprice, MG Chemicals.

Up until now, I have just been printing small things. My first attempt at something over a few inches wide was a disaster and continues to be. I have been tweaking and printing the last few days with minimal change in my results. The middle seems to be just right (maybe even a little thin), and the further out from center I get, the higher the nozzle is. I also get clicking from the extruder during the first few layers to the point where I had to take it apart and clean it out from all the chewed up filament. Which I figured was either a temperature issue, the ptfe issue noted below, or a z height issue. (Not that I can find.)

http://forum.seemecnc.com/viewtopic.php?f=36&t=7361

I have read through that post multiple times trying to figure out what I am missing.

And I also have followed the recommendation here: https://seemecnc.zendesk.com/hc/en-us/a ... lament-JAM

I have ran the advanced calibration a few times and am within .05

I have manually adjusted my z height to around .08 as the auto calibration always sets it way to low. (Used a piece of paper that measured .08 on my caliper until it just barely dragged.)

I have attempted printing this disc so many times I have lost count, the results are always similar to the picture below. The center still appears to be thin, but if I raise the z-height anymore it doesn't lay properly at all. And the further outside of center the higher the z height appears to become.

Here's what the 2mm tall disc print from the strategy thread looks like.
2017-02-14 23.09.24.jpg

Have you tried adjusting your probe offset? Also try updating your firmware to the dev branch.

Looks like your horizontal radius is wrong. That controls the amount the edge height differs than the center height. Then it also looks like there is a slight tilt. But get that horizontal radius fixed first.

Dale

Dale Eason wrote:Looks like your horizontal radius is wrong. That controls the amount the edge height differs than the center height. Then it also looks like there is a slight tilt. But get that horizontal radius fixed first.

Dale

Since I have ran the auto calibration and gone through the https://www.seemecnc.com/pages/delta-calibration-wizard multiple times, is the following the best way to go forward? I can't find anything more recent on the topic.

http://forum.seemecnc.com/viewtopic.php?f=77&t=5906

If by "ran the auto callibration" you mean the one available on the LCD display or by sending a G29 using a console app then that is good except that it does not look like the results are correct. Maybe you can post you EEPROM contents. I would suggest you play with the Horizontal radius values and see what happens with the edge height versus center height.

That post you linked to is a bit old as there is new firmware since then. I would look at the latest V3 manuals. However I don't know if they have been updated. But I suspect they have been.

Dale

I can't find a Rostock Max v3 manual beyond this http://seemecnc.dozuki.com/Guide/Step+6 ... Printer/51

I found a v2 manual appendix B. Is that still valid? http://download.seemecnc.com/rostockmax ... dition.pdf

JonIN3D wrote:I can't find a Rostock Max v3 manual beyond this http://seemecnc.dozuki.com/Guide/Step+6 ... Printer/51

I found a v2 manual appendix B. Is that still valid? http://download.seemecnc.com/rostockmax ... dition.pdf

The fist one is the correct one. The V2 does not have the calibration features found in the V3 so it is an all manual process. Would not be bad to learn and would work with the V3. However the V3 proceedues should be better since they are automated.


Dale

I have gone through the process in the first link several times and it is not improving.

I am going to go out and buy a feeler gauge so I can do the V2 manual calibration. But with so many people having successful auto calibrations, it makes me wonder what's so different about mine.

I went out and bought a feeler gauge.

I performed the procedure in the V2 manual Appendix B. I got it perfect. Just barely dragging at all 4 points. I tweaked the horizontal rod radius to be as perfect as possible.

The auto calibrate in all respects was close, but not close enough for a good first layer. Not even with the refinement page I linked a few posts back.

I don't have much of any clicking anymore and the first layer is going down fairly even, but there are some rows that aren't adhering to each other. Mainly in the upper right. What else should I be looking at to try and resolve this?

Looking at the photos I have to ask if the print is perfectly round? It seems off centre on the bed? Or is it oval in shape? The picture maybe skewing it a bit?

Yes, it is perfectly round. Yes, it is fairly centered on the bed (maybe up a mm or two). Lots of lens perspective/distortion going on with the camera (fun article on the subject http://gizmodo.com/5857279/this-is-how- ... retty-face). It's impossible to get dimension accurate macro shots without a nice camera/lense.

I am so close to figuring it out. Turns out the "Auto Calibrate" doesn't do the full job. No matter how many times I did it coupled with the delta guide, I never got a good first layer.

THIS was the magic: http://forum.seemecnc.com/viewtopic.php?f=77&t=5906

Use with a 20mm feeler gauge. After three goes, it was perfect.

I also had to play with my PLA temp to stop the clicking. Turns out the PLA I have HAS to extrude at 225C to extrude cleanly.

I still am having an issue with over extrusions in a few places on my first layer, but I hope to dial that in soon. More pictures and a detailed calibration guide to come after I have a chat with support on why the auto is close, but never close enough.