Skip to main content

Site Navigation

Your Account

Choose Language

Need help troubleshooting your BoXZY 3D Print Head? You're in the right place!

25 Questions View all

Best way to unclog Boxzy's 3D printer extruder nozzle?

Hi Everyone,

Has anyone had to unclog their Boxzy extruder nozzle yet and if so could you provide some info on how you did it? I've read some tips on the internet about using acetone, a torch and wire to clean out the nozzle, but the nozzle doesn't look like a nozzle I can use a box wrench or socket to remove. I discovered the hard way about clogged 3D printer extruder nozzles when the quick change attachment cable popped off mid print and the filament continued to be fed as the print head was cooling down. It turns out the quick change attachment port on the controller enclosure at the back of my Boxzy was recessed on one side so the cable connector wasn't locking to the port connector. When I tried to pull the recessed port tab that up so it would latch the acrylic enclosure panel the tab wouldn't latch and either broke then or was already broken, not sure. Anyhow, I was able to pull the port up enough through the top of the enclosure that the quick change attachment cable finally locked onto the port. Many thanks in advance for any assistance you can provide.

-Noel

Answered! View the answer I have this problem too

Is this a good question?

Score 1
Add a comment

7 Answers

Chosen Solution

so i had a clog the other day where i believe it backed up but the extruder kept pushing filament and i ended up with a ball between the end of the filament tube and the steel part of the print head. i took the print head out and cleared what i could and then turned on the heat and after it got up to temp i inserted a drill bit in the back side of the print head into the melted filament. let it cool down then pull out and all the stuff inside comes with. it was simply a matter of unscrewing the bit from inside the plastic and i was back to work.

Was this answer helpful?

Score 3

Comments:

Many thanks for the suggestions, Matt. Will try this out too.

by

Had a blockage earlier today, in the end, the above advice certainly fixed the problem. Well part of the problem. Using said advice I removed the 3d tool head from the quick change clamp, removed the 4 grub screws aroudn the bottom of the 3d printer tool head, and very carefully turned the temp up around the 200* mark and used a small allen key to push the stuck plastic through the print head. I'm back printing now. :)

My other problem was entirely unrelated. Turned out the reason I got the blockage was the filament was crossed up on the spool, and was pulling against itself!! This also caused it to grind the filament. :/

by

Can you please elaborate what you mean by "back side of the print head"?

by

I believe they are describing the side exact opposite to the nozzle hole in the aluminum portion.

by

Add a comment
Most Helpful Answer

I have had the pleasure a few times now. I opened Pronterface and turned the extruderr on to about 190 degrees. Then I extruded filament and pushed it by hand also until it began to flow. Then I reversed out the filament and with the heater still in carefully pushed a wire into the print nozzle.

I then reloaded filament and made sure that I could have the program extrude it and that it came clear of the nozzle.

I then re-leveled the printer and turned off pronterface.

After that, just print as usual.

You could if you had to remove the head from the quick change system by removing the four headless screws and carefully bringing the head out of the enclosure.

You could then unscrew the bowden tube from the top of the head and then very carefully turn on the heater block and put a paperclip into the top of the white tube. this will force the remaining filament out through the nozzle. If you have to, you can then insert a thin wire into the other end of the head and make sure it is clear.

Reattach the bowden tube. make sure filament feeds, and then put the rest of the had back together.

Was this answer helpful?

Score 3

Comments:

Thanks a bunch for the tips, Ken. Will give it a go.

by

Add a comment

A 0.35mm guitar string works great for cleaning the nozzle

Was this answer helpful?

Score 3

Comments:

Thank you Jakrey, the next time I did a print the filament extruded fine, but I purchased some very small drill bits and I have some spare guitar string just in case. :-)

by

It's one of those things you might already have if you are a guitar owner :) whenever you replace those old strings keep the strings and it works well for minor clogs. I do it preventavily too before prints to get the best homogenous flow

by

Add a comment

Try this method:

How To Unclog 3D Printer w/o Disassembly (YouTube)

Was this answer helpful?

Score 1

Comments:

Thanks a bunch for your suggestion Master Yoda, very informative. Will put this in my toolbox for future calamities. :-)

by

Add a comment

Honestly, most times I've had an issue it hasn't been a blockage, but the filament has melted at the bowden connection due to thermal creep. Increased fan speed has fixed this, but sometimes my first layer is too large and therefore takes too long before the fan kicks on and the same problem will happen again.

Was this answer helpful?

Score 1
Add a comment

Tried all of the above techniques - no luck. Any suggestions?

Was this answer helpful?

Score 0

Comments:

May be time for a new nozzle. Info@BoXZY.com can set you up, if you decide to purchase one.

by

Add a comment

Well for what it is worth, my 3D print head completely jammed this weekend.

I tried wire/needles, heat, cold, etc. No matter I could not free up the jam.

So grabbed some small allen wrenches and I took it apart.

Then I very quickly found the issue. Enjoy :-)

Block Image

Block Image

Block Image

Block Image

Block Image

Block Image

Wow, now THAT was a JAM!

Was this answer helpful?

Score 0
Add a comment

Add your answer

Noel will be eternally grateful.
View Statistics:

Past 24 Hours: 1

Past 7 Days: 3

Past 30 Days: 7

All Time: 680