Help Loose Extruder

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redUFO
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Help Loose Extruder

Postby redUFO » Mon Jan 02, 2017 8:51 pm

Over time I noticed my left extruder is coming loose. Now its really, really lose to the point I can spin it by hand. This is not good as prints are failing from this hitting parts.

Image
I've tightened the top allen screw but it looks like that just holds the heat grills in. What actually keeps the extruder area tight?

I've taken it apart to clean it. Do I need to buy the entire thing?
Maker of Star Wars stuff
http://r5-d4.blogspot.com/

49 Spools of PLA ordered from Raise 3D.

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Vicky@Raise3D
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Re: Help Loose Extruder

Postby Vicky@Raise3D » Tue Jan 03, 2017 3:06 am

Please make sure that you have followed our instruction video to carry out disassembling and assembling.
https://www.youtube.com/watch?v=Q3EaDHNdlKU
https://www.youtube.com/watch?v=hobwePlokQc

After taking everything apart, please make sure that you have clean both inside and outside to be very clean, especially the thread of nozzle, throat tube, heating block and the contact surface between nozzle and throat tube. What's more, you can heat the nozzle and use sleeve to carry out one more tighten of the nozzle before you fix the hotend back to the head carriage in case there is still filament there..

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walshlg
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Re: Help Loose Extruder

Postby walshlg » Tue Jan 03, 2017 5:24 pm

Do what Vickie says - it all needs to come off and re-tightened OR ELSE filament will start oozing out of the top of the heat block because the isolation tube is not screwed in tight to the nozzle. Once this happens it is a real mess to clean up and it really must be done hot which is hard to do.

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redUFO
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Re: Help Loose Extruder

Postby redUFO » Tue Jan 03, 2017 7:05 pm

Thanks! This was exactly the information I was looking for. Just the basics of how these parts are fasten together so I can clean it up.

Sometimes I notice some brownish oil has fell onto the part. I'm assuming its grease from the aluminum rods that is working its way down via gravity and ending on up on parts. I'm sure that lube needs to be replaced as it will wear out. What kind of lube should be put on those rods when the time comes?
Maker of Star Wars stuff
http://r5-d4.blogspot.com/

49 Spools of PLA ordered from Raise 3D.

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walshlg
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Re: Help Loose Extruder

Postby walshlg » Wed Jan 04, 2017 2:11 am

Hmm I don't think it is oil. My worry is that you have cooked filament ooozing out the top of the hot block. Stop and make sure that isn't the case. Also sometimes ooze sticks to the hot block and turns brown and eventually falls off. It can get pretty junky and, if you are really lazy like me, I cover it up with another layer of Kapton tape over my insulation until it gets so bad I have to re-do the insulation.

P.S. yours looks nice and clean!

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Vicky@Raise3D
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Re: Help Loose Extruder

Postby Vicky@Raise3D » Thu Jan 05, 2017 5:17 am

My guess is also filament ooze too.

By the way, about the lube for X Y rods, we recommend PTFE lube from SuperLube.

jimc2305
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Re: Help Loose Extruder

Postby jimc2305 » Mon Feb 20, 2017 9:16 am

I'm having the same issue with the left nozzle shifting. I removed the hotend and then reattached and tightened the set screw but ended up stripping the set screw. Where can I get more of these little set screws or what is the size so I can purchase.

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walshlg
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Re: Help Loose Extruder

Postby walshlg » Mon Feb 20, 2017 5:21 pm

The nozzle is only held in by the nozzle threads! Hold the hotend block with pliers and tighten the nozzle (HOT) with a 5mm wrench. The safest way is to take off the whole isolation tube hat end assembly from the extruder carriage, leaving the heater and thermocouple in place, then you can heat it up BUT after re-assembly you need to do a dual head calibration for offset and re-set the nozzles Z height

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Vicky@Raise3D
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Re: Help Loose Extruder

Postby Vicky@Raise3D » Sat Feb 25, 2017 6:26 pm

Here is the assembling instruction video of our hotend.
https://www.youtube.com/watch?v=hobwePlokQc
If you loose one set screw, it normally doesn't affect a lot. Since no matter the probe of thermocouple or heating rod both have two set screw to fix it. For the one which is fixing throat tube, it was for long-way shipping. If you follow our instruction and make sure that the throat tube and nozzle is well-sealed, that screw is also not necessary.

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redUFO
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Re: Help Loose Extruder

Postby redUFO » Tue Apr 18, 2017 11:16 pm

Well that lasted for 3 months and then I think the extruder hit a part. It leaks all over the place its coming out just under the vents.

What is a good way to clean all of the PLA off of these parts? Put them in the oven, a heat gun?

Ordered a V2 hotend incase this turns out to be bent or damaged.
Maker of Star Wars stuff
http://r5-d4.blogspot.com/

49 Spools of PLA ordered from Raise 3D.

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Vicky@Raise3D
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Re: Help Loose Extruder

Postby Vicky@Raise3D » Wed Apr 19, 2017 11:37 am

Heat gun, oven should be both ok. Sometimes, we even directly set the nozzle into fire.

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redUFO
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Re: Help Loose Extruder

Postby redUFO » Wed Apr 19, 2017 5:44 pm

Heat gun worked okay to help clean the PLA off. But I snapped the threads off the long bolt during assembly. Weird because it wasn't tight and looked like I could spin it several more times before it was to tighten up. Does Raise sell the bolt separately or just with the V2 hotend?

I wonder if boiling the parts in water might help remove them.
Maker of Star Wars stuff
http://r5-d4.blogspot.com/

49 Spools of PLA ordered from Raise 3D.

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Vicky@Raise3D
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Re: Help Loose Extruder

Postby Vicky@Raise3D » Mon Apr 24, 2017 11:03 am

You mean screws? If you need screws, you can directly buy from local shops in your city. Those are common size screws.

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redUFO
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Re: Help Loose Extruder

Postby redUFO » Tue May 09, 2017 10:34 pm

Sorry I meant this custom bolt that the heat vents going around and the PLA goes thru it.

Image

Today I found the bolt laying on the floor next to the printer. I had the door open so it might have dropped out from the inside or maybe from the bottom. It looks just like the bolt the used to adjust the z axis but that bolt is still there. I'm sure it goes somewhere and vibrated loose. Any idea where this might belong?

Image
Maker of Star Wars stuff
http://r5-d4.blogspot.com/

49 Spools of PLA ordered from Raise 3D.

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walshlg
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Re: Help Loose Extruder

Postby walshlg » Wed May 10, 2017 6:26 pm

yikes it looks like the top picture is a broken isolation tube. The bottom picture matches the nuts that hold the plexiglass to the cold end

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Vicky@Raise3D
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Re: Help Loose Extruder

Postby Vicky@Raise3D » Thu May 11, 2017 9:58 am

Yes, it should can be sold separately or at least we sell it separately.
https://www.raise3d.asia/collections/ac ... zle-throat

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redUFO
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Re: Help Loose Extruder

Postby redUFO » Thu May 11, 2017 4:05 pm

Vicky@Raise3D wrote:Yes, it should can be sold separately or at least we sell it separately.
https://www.raise3d.asia/collections/ac ... zle-throat


Thanks Vicky!

I was looking around the store and couldn't locate that part. So I just ordered the entire thing and printer is working. I just learned the hard way not to over tighten that bolt or it will snap off.

Walshlg was right, that other bolt was 1 of the 3 that hold the clear cover plate the extruder thingy.

Almost done printing the rest of BB-8 and should have some picks up in the next week or so.
Maker of Star Wars stuff
http://r5-d4.blogspot.com/

49 Spools of PLA ordered from Raise 3D.

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Vicky@Raise3D
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Re: Help Loose Extruder

Postby Vicky@Raise3D » Fri May 12, 2017 3:12 am

That's good to know. Can't wait to see the final result.
Here is the disassembling and assesmbling videos:
https://www.youtube.com/watch?v=Q3EaDHNdlKU
https://www.youtube.com/watch?v=hobwePlokQc

Hope can help you in future.

If you fell any resistance during disassembling, there may have filament stuck inside thread. Please heat the nozzle and soften the filament inside, then move on.


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