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Ultimaker 3 feeder grinding free 

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By mmacrobertAugust 20, in Ultimaker 3D printers. I'm основываясь на этих данных with my Ultimaker. I've spent more time trying to get it to work than actually print anything useful.

I'm not happy at all. Ultimaker ultumaker me with a new PFA tube with a larger internal ID, but I'm still seeing a large amount of friction in the Bowden and Hot End to the extent that nothing I do with the feeder can overcome it. I've built Bertho's travelling feeder clamp only to realise that the principal source of friction is downstream of the feeder. I've tried tightening the ultimaoer feeder clamp even up to the point where the feeder-stepper skips.

I thought it might be an extrusion temperature problem, but I raised the temperature to the boiling point of the PLA and I still see the same behaviour. I need some advice on how to continue. My Ultimaker is non-functional - I'd like to remedy this as ffeeder as possible.

Tight enough that you can't yank it out by hand should be enough. I don't think this is likely though. Check that the nozzle isn't clogged. Have you measured your filament? The 3. I've measured the filament many feeedr to check.

It is 2. I calculated an average variation on diameter to 0. I was impressed at the consistency. While slightly larger than ultimaker 3 feeder grinding free Ultimaker gginding average dia 2.

This filament is also grindung in exactly the same way. I was hoping that it would be that simple to address. I took time to eliminate the possibility. I used a dremel tool to make an internal cone which makes a good seal inside the PEEK as it touches the brass tube. I've stripped down the head to inspect and clean everything more times than I would like I know the nozzle is clean - Ultimaker 3 feeder grinding free figured out a way of cleaning out a blocked nozzle by raising the temp to around C then pulling on any filament in the nozzle.

It comes out clean and the nozzle hole is also visibly clear. I don't ulitmaker how ultimaker 3 feeder grinding free quantify "too tight" for the long thumbscrews though this might be partly responsible. I do them up "three fingers" tight. No tools required. I'm basically running out of ideas to check, so any further possibilities would be gratefully received. So the ultimaker 3 feeder grinding free issue that I can think off is, stressing the fee too much, this can be done by printing at a too low temperature or a too high speed or a combination.

Printing at C indicated. Just printing at the default Cura setting. I tried C but it had the same outcome. I'm wondering if it may have something to do with the spool causing a curl on the filament thereby increasing friction on the PFA, but I have no practical solution to experiment with this. Are you printing with filament received from Ultimaker? There are different types of PLA available, so the behavior. Have you tried feeding 'fresh' filament through the bowden tube?

Like when it hasn't been through the feeder yet. Whenever filament started to grind, I would have to chop off the entire length grining filament because the ground area would have a large lip on both edges where the bolt was. It was clear that the lips would rub against the PFA if it were forced into the tube. To restart I'd be using fresh filament. With the regular Ulti-feeder clamp I'd try to ultimaker 3 feeder grinding free it as light as possible cree I'd get a reliable feed.

If it started to grind again, I'd increase the pressure incrementally. That strategy didn't make a feedre because fdee I was hearing ultimaker 3 feeder grinding free feeder stepper motor skip.

I was so annoyed, I made Bertho's clamp by force feeding the ultimakker. It was grindiny I had this clamp operational, that I realized that my problem was somewhere downstream.

Have you rfee tried to start a print, and feed your filament manually? Grinsing will probably not result in a very good print, but if this goes flawlessly no clogs, no grinded filament страница means. I've done some experimentation and I am able to reproduce the failure on demand. I can grindingg reproduce a remedy on demand. However, the remedy is not really practical. Current Feeder mechanism: I'm using Bertho's rolling feeder clamp design to eliminate problems caused by changing filament diameter.

The filament is jamming inside the Bowden Tube - previously we dismissed the possibility of this type of friction, however the amount of friction generated is significant and is a strong function grinxing the diameter of the feeder used to coil the filament.

Ulimaker spool diameter should match мысль ableton live suite 9 instruments free думал curvature of the Bowden in service to minimize points of contact between the filament and the inner wall of the Bowden. When the spool diameter ultimaked much smaller than the curvature grindin the Bowden it will adopt a coarse spiral inside the tube that is ftee outwards along it's entire length. Since the spiral inside the Bowden is a significantly smaller diameter than the natural state on the spool this "normal force" can be significant.

Since feedsr normal force can be high, the sliding frictional force will also be high due to the large contact area. This is observed by a steady increase in frictional force as the filament is forced into the Bowden.

With a small enough coil the filament will jam in the Bowden so tightly, that ultimaker 3 feeder grinding free filament cannot be moved even with extreme force. You can check this with a simple experiment testing the potential extremes - heat PLA with a hairdryer with just enough heat to coil around a cardboard toilet roll, let it cool and try feeding the filament and get an idea of the "feeding force".

It will be very high and will jam in the Bowden. Snip off another length of filament and this time use the hairdryer посмотреть больше make a ultimaker 3 feeder grinding free straight filament section.

It will be very easy to slide. Remove the filament, and add a small drop of water to the surface of the tightly coiled filament - the surface tension will show the points of contact between the filament жмите сюда the inner wall. It will be pushing the inside wall along the entire length. Repeat with the straight filament - there will be random points of contact. These observations explain happy printing at the start of a spool, but jamming as the spool is consumed and the coil diameter reduces - I have experienced this.

Furthermore filament that has not been wound cleanly onto the spool will have slight kinks of tighter diameter, which in turn increase the "normal force" and hence dry friction on the Bowden Id. Ultimaker 3 feeder grinding free partial solution also a business opportunity for UM is to use spools with as large a diameter and as wide as possible to ensure that the coil radius is constant for the ultimaker 3 feeder grinding free length of filament.

You could sell empty ftee with this geometry. Another solution is to reduce the sensitivity of the Bowden system ultimaker 3 feeder grinding free the coiling effect, but I have no practical suggestions on how to achieve this without eliminating the Bowden entirely.

My remedy though impractical is to preheat the filament to get it to "relax" so that the coiling has a larger radius. I've frfe remediated filament опере autodesk inventor professional 2016 gratis free пост I would have otherwise thrown away due to jamming. A hairdryer seems to work best, to apply the minimum amount of heat.

It is possible ultimaker 3 feeder grinding free heating may change the grindibg diameter - I've measured an increase in average variation from 2 microns to 20 microns, however I microsoft security bits windows server 2012 print where otherwise I would not I just have to respool my filament or change to ultimaker 3 feeder grinding free different supplier who supplies larger spools and winds the filament on without filament kinking We're referring to the screws at the top of the hot-end, not the material feeder Just enough pressure for a seal of the PTFE and the brass.

I haven't found an answer neither, the only way I can print is removing the ultimaker 3 feeder grinding free filament while the printer is paused, and then continue printing I'm using Ultimaker 3 feeder grinding free Fweder tried to print the same feeder than you but i haven't had luck with it. I keep looking an answer as you. I hope some day we found it. It could be that this is too tight, and deforms your filament causing it to get stuck in the bowden tube.

You need to be a member in order to leave приведу ссылку comment. Sign up for a new account in our community. It's easy! Already have an account? Sign in here. SandervG posted a topic in Official newsApril SandervG posted a topic in Official newsFebruary 9, Filament keeps grinding. Share More sharing grindinb Followers 0. Recommended Posts. Feerer keep grinding filament and all of my printing fails.

The friction of my filament against the tubing is way too high. Thanks, Martin.