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Kossel Delta xxl build project HELP

Posted by alex773 
Re: Kossel Delta xxl build project HELP
July 21, 2020 02:34PM
I start this print with 3.5 retraction Length under Filament Settings in PrusaSlicer and S3.5 in M207 in config.g
After 25 mm I send the M207 S4 F2300 Z0 to the printer and I changed the temperature to 190c. Maybe is just me but I don't see any difference.
I also checked that exposed section of the gear on the side of the Hemera and when it retracts it jumping back

Edited 3 time(s). Last edit at 07/21/2020 03:06PM by alex773.
Attachments:
open | download - IMG_20200721_133231.jpg (181.9 KB)
Re: Kossel Delta xxl build project HELP
July 21, 2020 03:10PM
I don't really see much difference either. Could you post that gcode file?


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Re: Kossel Delta xxl build project HELP
July 21, 2020 03:16PM
Re: Kossel Delta xxl build project HELP
July 21, 2020 04:20PM
Would you post the stl also, I'd like to slice it and see how it does the gcode for me.


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Re: Kossel Delta xxl build project HELP
July 21, 2020 04:23PM
This is the STL
I just changed the Z to 50mm

Edited 1 time(s). Last edit at 07/21/2020 04:24PM by alex773.
Attachments:
open | download - stringing_test_with_bridge.stl (69.6 KB)
Re: Kossel Delta xxl build project HELP
July 21, 2020 04:30PM
Yeah, something's going on at layer change or retract time. Here's a snip of gcode from yours.

G1 Z4.500 F5400.000
G10 ; retract
G1 Z5.200
G1 X6.789 Y-44.591
G1 Z4.500
G11 ; unretract

It's moving to the next layer, retracting, then moving up by 0.7mm, moving to XY position, then going back down. Then unretracting.

Take a look at mine

G1 Z4.600 F5400.000
G10 ; retract
G1 X7.551 Y-0.057
G11 ; unretract

Looks to be consistent each time. There's got to something somewhere in your slicer config.
Take a look at the Printer Settings Tab in the Custom G-Code section, in the Before and After layer change.

Edit: Looks like it might actually be on the Printer Settings tab, in the Extruder 1 section under Retraction Settings. Probably the Z lift there, take that out. If you need it, you can add it to your M207. I've never used it ever.

Edited 2 time(s). Last edit at 07/21/2020 04:38PM by blt3dp.


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Re: Kossel Delta xxl build project HELP
July 21, 2020 04:38PM
This is what I have in Custom G-Code

Edited 1 time(s). Last edit at 07/21/2020 04:39PM by alex773.
Attachments:
open | download - Screenshot (30).png (105.3 KB)
Re: Kossel Delta xxl build project HELP
July 21, 2020 04:39PM
Yeah, I did some playing around and looks like it might actually be on the Printer Settings tab, in the Extruder 1 section under Retraction Settings. Probably the Z lift there, take that out.



Edited 1 time(s). Last edit at 07/21/2020 04:40PM by blt3dp.


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Re: Kossel Delta xxl build project HELP
July 21, 2020 04:44PM
Also in your start gcode, you can replace that G0 Z0.200 F1800 with G0 Z[first_layer_height] F1800
Prusa can do some variables, then it will go to whatever the first later height that you set in the gui.


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Re: Kossel Delta xxl build project HELP
July 21, 2020 04:49PM
On Lift Z I have now 0. I have on Minimum travel after retraction 1. Should I change it to 2 ?
Re: Kossel Delta xxl build project HELP
July 21, 2020 04:51PM
I would. Though it shouldn't affect your issue. It's only to say if the travel is this short, don't retract.


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Re: Kossel Delta xxl build project HELP
July 21, 2020 04:55PM
I changed it to G0 Z0.3 F1800
Re: Kossel Delta xxl build project HELP
July 21, 2020 04:57PM
That works, though you can actually type in [first_layer_height] and Slicer will put in whatever the first layer height you set in the gui. Is useful if you change the first layer height, you don't have to remember to change the start gcode.


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Re: Kossel Delta xxl build project HELP
July 21, 2020 05:23PM
This is the first print with the new settings. Retraction Length 4.2 in PrusaSlicer.
Config.g Retraction : M207 S4.2 F2300 Z0.00

Edited 1 time(s). Last edit at 07/21/2020 05:31PM by alex773.
Attachments:
open | download - IMG_20200721_161942.jpg (182.8 KB)
Re: Kossel Delta xxl build project HELP
July 21, 2020 06:13PM
Looks a lot better. I believe we're looking at a cooling issue with the remaining stringeys and the bridge quality there. I've never actually printed a bridge yet on my printer, mine might come out the same. I'll print this file and let you know how it goes.

You may actually slow down the bridge speed, so the fan has time to cool it mid air.


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Re: Kossel Delta xxl build project HELP
July 21, 2020 07:36PM
30mm hight and 15mm/s speed for bridge
Attachments:
open | download - IMG_20200721_183448.jpg (187.2 KB)
Re: Kossel Delta xxl build project HELP
November 10, 2020 08:59PM
I changed my rods with the new ones from Filastruder.
After 2 months I noticed the magballs on my effector and carriage adapters were getting this black powder . I lube them with synthetic grease. The same reason why I changed them in the first place. I don't know why it is doing the same thing. I checked every screw and nut on this printer. Please advice . I'm using exclusive Prusa Slicer and I start like it.
Re: Kossel Delta xxl build project HELP
November 10, 2020 09:03PM
Me too, I think it’s just not good design. Delrin on chrome steel, I dunno about long term wear at this point. I wonder if rod ends with steel balls in bronze cups would be better. I can’t say I have a real solution.

Quote
alex773
I changed my rods with the new ones from Filastruder.
After 2 months I noticed the magballs on my effector and carriage adapters were getting this black powder . I lube them with synthetic grease. The same reason why I changed them in the first place. I don't know why it is doing the same thing. I checked every screw and nut on this printer. Please advice . I'm using exclusive Prusa Slicer and I start like it.


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Re: Kossel Delta xxl build project HELP
November 10, 2020 10:44PM
Do you know any other design to accommodate the Smart effector but with different arms and magballs ?
Re: Kossel Delta xxl build project HELP
November 10, 2020 10:49PM
There’s this thing.

https://713maker.com/rostock/duet-smart-effector-adaptor


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Re: Kossel Delta xxl build project HELP
November 10, 2020 11:01PM
I’m thinking about doing this. But with better rod ends. I’d want to take time to model it up so I can make sure I can still hit the full build plate.

https://www.thingiverse.com/thing:3603550


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Re: Kossel Delta xxl build project HELP
November 11, 2020 01:18AM
With this setup you are going to lose allot of room from the build plate because of the big fans.
Re: Kossel Delta xxl build project HELP
November 11, 2020 09:17AM
Quote
alex773
I changed my rods with the new ones from Filastruder.
After 2 months I noticed the magballs on my effector and carriage adapters were getting this black powder . I lube them with synthetic grease. The same reason why I changed them in the first place. I don't know why it is doing the same thing. I checked every screw and nut on this printer. Please advice . I'm using exclusive Prusa Slicer and I start like it.

The black powder may just be "polishing dust". Check and see if the rod leaves a black stain on a clean light coloured rag that you sprayed with WD40 and wiped the rods with. It won't be much black but will be an obvious streak. Also if you have belt drives on your printer you will find black powder below the pulleys.
Re: Kossel Delta xxl build project HELP
November 11, 2020 09:50AM
Unfortunately I get it on the effector side. Upon inspection, it’s definitely the delrin rod ends wearing down.

Also as to losing print volume due to the fans. I wouldn’t use that fan setup. It’s just a ridiculous setup.


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Re: Kossel Delta xxl build project HELP
November 11, 2020 02:17PM
The black powder may just be "polishing dust". Check and see if the rod leaves a black stain on a clean light coloured rag that you sprayed with WD40 and wiped the rods with. It won't be much black but will be an obvious streak. Also if you have belt drives on your printer you will find black powder below the pulleys.[/quote]

doug_scott Thank you for your input. I checked everything and what I noticed is that the magnet from the arm it ate the chrome off the balls . This is happening on the effector side on one single rod end. On the older set it was happening on 3 ends.
After blt3dp show me the 713maker Smart Effector adaptor I start thinking about replace the Haydn arms with the SeeMeCNC 350mm arms . The question is how I can fit the CeeMeCNC arms on my carriages , and if this setup is going to be better than the one I have. To replace the arms every 6 months because of this is going to be a very expensive printer to maintain.

Edited 2 time(s). Last edit at 11/11/2020 02:26PM by alex773.
Re: Kossel Delta xxl build project HELP
November 11, 2020 02:23PM
blt3dp. I changed my fans with the Hemera fans from Filastruder and now when I print my fan speed is at 80%. There is a huge difference between them.
Re: Kossel Delta xxl build project HELP
November 11, 2020 02:26PM
Yeah, it’s the delrin wearing down. I’ve cleaned all the rod ends using a q-tip and alcohol until the q-tip comes out clean. Made sure to lube them using the recommended line and it still happens. It eventually gets to the point where the magnet runs the ball. I’m looking at solutions also. I’d like to use a rod end that has a bronze insert. That should provide much better longevity. Though my concern is the angle of rotation. I hope not to limit the printable area. I’ll have to model it up.

Interesting about the fans.

Edited 1 time(s). Last edit at 11/11/2020 02:27PM by blt3dp.


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Re: Kossel Delta xxl build project HELP
November 11, 2020 04:45PM
What do you think about the arms from SeeMeCNC ? I heard good things about the Rostock printer
Re: Kossel Delta xxl build project HELP
November 11, 2020 07:48PM
They’re definitely of interest. I like the idea of the replacement parts being cheap. Maybe just stock some extra in the event they do get work down.

I’m also thinking about these.
https://www.yeahracing.com/aluminum-reversed-thread-m3-rod-ends-5pcs-black-ya-0572bk-00077947?search=YA-0572BK&description=true

I like that the body is aluminum so they’re light, the ball is steel, and there’s a brass/bronze sleeve. Plus they are already assembled. I might order a pack to see if there’s any play in them.

I was also looking at these, though I dunno if I like the ball directly touching the magnet, I think I’d prefer the brass to touch the magnet.
https://www.aliexpress.com/i/32898256074.html


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Re: Kossel Delta xxl build project HELP
November 11, 2020 10:42PM
I do like the option 1 better , but I'm open for any solution . SeeMeCNC arms are a good option I think.
I don't know if using SeeMeCNC arms it will not reduce the printing surface
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