Project "Get my printer printing reliably"

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Jubbp
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Project "Get my printer printing reliably"

Post by Jubbp » Sun Oct 28, 2018 1:00 pm

I've been frustrated by my Felix 3 Printer for several years. It appears it requires a baby sitter to print reliably.

I would like my printer to print reliably and consistently without constant attention

I'll be updating this thread with my efforts.

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Jubbp
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Re: Project "Get my printer printing reliably"

Post by Jubbp » Sun Oct 28, 2018 1:03 pm

as an example, the image below is a recent piece of a failed print.
IMG_0896.jpg
IMG_0896.jpg (21.54 KiB) Viewed 270 times
Ignore the roughness at the bottom, thats where I removed some supports. The main issue is the patchy printing thoughout the print.

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Jubbp
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Re: Project "Get my printer printing reliably"

Post by Jubbp » Sun Oct 28, 2018 1:15 pm

Another example from the same project.
IMG_0897.jpg
IMG_0897.jpg (31.04 KiB) Viewed 270 times

DJCoopes
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Re: Project "Get my printer printing reliably"

Post by DJCoopes » Wed Feb 20, 2019 1:59 pm

Does your printer's extruder have fans attached to it? this could help with layer adhesion and webbing.
10 poke 53281,0
20 poke 646,5
30 poke 53280,0
40 poke 647,0
50 print " **** commodore 64 basic v3 ****"
60 print " "
70 print " 64k ram system 38911 basic bytes free"
80 print " "
90 print "ready."

parkview
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Re: Project "Get my printer printing reliably"

Post by parkview » Fri Feb 22, 2019 3:34 pm

Hi DJ,

three of us have the same printer. It comes with a hot end fan and left and right cooling fans as it extrudes. Phillip brought it along last meeting and found that the extruder drive current was out. A tweak later on the motor drive current and it was working well.

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Jubbp
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Re: Project "Get my printer printing reliably"

Post by Jubbp » Fri Feb 22, 2019 4:06 pm

Phillip brought it along last meeting and found that the extruder drive current was out
Yes, Thanks for the help, I'll need to find some time to update the thread.

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Jubbp
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Re: Project "Get my printer printing reliably"

Post by Jubbp » Sat Feb 23, 2019 11:23 am

So I took my Felix 3D Printer along to the February South West Makers meeting st the Eaton Library. I had been speaking with Stephen about it at the December meeting.

A couple of quick test prints and Stephen, Paul and Rob were onto the problem quickly.

The problem was under extrusion and while printing we were easily able to stop the flow by holding the filament back and hearing the infamous "click".

We checked the tension on the print head but that was up as high as it would go. Stephen then hit the jackpot.

The current delivered to the stepper motor was insufficient to push the filament through the head and the stepper motor was missing steps as a result. :roll:

A quick adjustment to the driver on the control board and the print head was extruding filament like a champ. :D

Image
Image credit to Paul from the SWMakers Blog http://www.swmakers.org/blog/sw-makers- ... on-meeting

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Re: Project "Get my printer printing reliably"

Post by Jubbp » Sat Feb 23, 2019 11:37 am

Of course, there is more to the story.

When I returned home with the printer, I still had a few issues.

Immediately, I had issues with serious under extrusion.

I had to revisit my slicer settings in Simplify3D. During my troubleshooting I had made changes which had to be reconfigured.

As it was under extruding again, I tried upping the extrusion factor to increase the flow of filament. This has the opposite affect to that which I was expecting. Extrusion almost stopped all together. I finally worked out that the drive gear was actually moving too fast and was gouging the filament and not pushing properly.

I reduced the extrusion back to 100% and I'm now printing my first complex item in several months. I have manually reduced the flow rate down to 90% during this print after a couple of under extrusion issues and the print appears to be coming along nicely.
A8576DBE-E0D4-4D29-9CB1-FF365E59B411.jpeg
A8576DBE-E0D4-4D29-9CB1-FF365E59B411.jpeg (83.92 KiB) Viewed 2 times

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