eduardas-afanasjevas
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Posts posted by eduardas-afanasjevas
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The metal arm from the endstop looks awfully bent, did you do this yourself to correct some alignment issues?
If not, it probably means the whole carridge simply smashed into it without stopping the motor.
Could the continued running of the motor have streched the belt? (since the lower part of the belt is somewhat fixed inside that black slider-block, pulling on one side could make it longer?)
Not really sure, just putting it out there, I do agree with Illuminarti that the amount of play is quite substantial.
I'm not sure which part you mean is bent... The belt is loose but the other parts seems to be pretty fine.
Can you explain?
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The belt was tight as it's supposed to be. However, all of a sudden it's much looser. I'm not sure where this extra belt lenght is coming from
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After my last print I noticed that one of the belts is sloppy (see picture http://imgur.com/Wl7fHRd)
I'm not sure what happened. I contacted Ultimaker support but didn't get a reply.
- Can I tighten the belt? If so, how can I do it?
- Alternatively, do I need to replace the belt? If so, how do I do the replacing?
Not sure how to proceed and avoid this in the future
- Can I tighten the belt? If so, how can I do it?
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I had a second look. So the bottom part of the folded metal isn't straight either. It was like that when I received it and didn't cause any problems. Now it's touching the clip.
How can I fix this?
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The folded metal part always looked like this. The bottom part is actually straight and always prints well - only the top part doesn't look straight.
I updated the firmware 3-4 weeks ago. Before cleaning the it wasn't touching the clip. Now it's touching it a little bit which prevents proper levelling of the build place.
If it was a few mm further, it would be fine. I'm not sure why it's not because it was fine yesterday.
Apart from firmware update, what else could be an issue?
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After cleaning up the extruder I noticed that the right end stop is incorrect. Basically, the extruder touches the metal clasp holding the glass plate. When I calibrate the build plate, the extruder touches the clasp and prevents it from moving upward.
You can see the pictures showing this here: http://imgur.com/ABA2JWY
Any tips how this could be solved? The extruder has to stop a bit more inward not to touch the clasp.
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Now overhangs also have a problem where the plastic shrinks and lifts and then the print head hits the part you are printing - did you notice that at all? If you have that issue then keep things warm: 70C heated bed. Keep things warm by lowering fans possibly to 50% and maybe cover the front of the printer to keep the air warm that is close to the frog belly. If this isn't a problem then better to keep the fans at 100%.
This is exactly what I noticed. Why would I need to keep things warm if this is happening? I noticed that the part that lifts becomes very wobbly and eventually spills out.
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This is simply because that little froggy has a very shallow angle for its belly and the filament strands are having trouble adhering to their neighbours. Quite a bit of the filament is sticking out into thin air, just barely attached to the model, then the next layer comes along on top and pushes the filament down making things look messy.
Like Sander points out printing thinner layers will help here as the displacement between layers will be reduced. IIRC there's also an updated model of that frog where it's sitting more upright which helps quite a bit.
Can you post a link to the updated model?
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I think by printing at thinner layers you solve a big part of this problem.
Lower temperature may also effect it.
Are both your fans working?
I don't think you have to tune the material flow, it is an overhang-thing.
Yes, both fans are working. I tried printing at 60-100 microns with pretty much the same results. I did notice that PLA doesn't cool down fast enough and gets quite flexible.
What temperature would you recommend?
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can you first show is some photos ? of what is happening...
a photo is really worth a thousand words...
Ian :smile:
Good point! I posted a link to the image
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I've been using a Faberdashery PLA 3MM filament for my Ultimaker 2. When printing layers sloping outwards (or mild overhangs), the printer seems to feed too much material. Excess starts to add up with every layers until the surface gets messed up. I tried tuning the material flow settings (reducing to 95-97%) while printing, however, the results are not always consistent. Sometimes, the Ultimaker leaves tiny gaps when printing with reduced flow which then leads to further errors.
I suspect I need to calibrate the filament diameter settings or the feed rate (i.e. related between feed speed and filament diameter). Any advice how to do this properly?
UPDATE. Image attached.http://imgur.com/lAf7k5e
How to replace a belt on Ultimaker 2?
in UltiMaker 3D printers
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I have a problem with one of the belts and I want to replace it. I can't find any tutorials how to do this. I'm particularly not sure how to remove the black box which holds the belt and the 2 axes together.
Any tips?