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Topic: how to prevent noozle cloggin?

just been happening recently.  i dont know if its because of the printer, the filaments, etc.. how would i know?

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Re: how to prevent noozle cloggin?

It could be a mix of the hotend, bad filament, or even slicer settings...I've never had an ABS clog *fingers crossed*.
As recommended all over the forum, upgrade to a E3D if you have not. With an all metal hotend, clogs are rare, and it will allow you to print with other materials a stock hotend would not appreciate.

Either way:
*If heat settings are too high, the filament will melt before reaching the nozzle. This will eventually lead to a clog and charred fragments in the barrel.
*Try to avoid cheap filament. Some may be very intriguing on sites like Amazon, but even with high reviews they may be a disaster...pumped with moisture and inconsistent diameter.
*In my experience, PLA clogs more often. And if over extruding PLA, it can cause the printer to "gum up".

Let us know what kind of setup you are using (e.i. make and model of printer, style hotend, any modifiactions you have made, etc.) This will allow us to help you further. smile

Printit Mason and Printit Horizon printers
Multiple SD2s- Bulldog XL, E3D v5/v6/Lite6, Volcano, Hobb Goblin, Titan, .9 motor, Lawsy carriages, direct Y drive, fishing line...the list goes on
Filawinder and Filastruder #1870.....worth every penny!

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Re: how to prevent noozle cloggin?

+1 for E3D

After the headache of clogs it was the best upgrade I've done. Any clog I do get is in the tub and easily cleared by removing the hotend, heating, then pulling it out with tweezers.

E3D-v4 Hotend, MK5 carriage with round plastic wire conduit , 3/16" tempered glass,  Well nut, SureStepr SD8825 1/32 Extruder Driver, PowerEdge 2650 500W PS, QU-BD heated bed, circuit board fan, hinged plexiglass enclosure with plastic tray top. Other than that mostly stock SD3

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Re: how to prevent noozle cloggin?

Best way is to never ever leave your hotend on when not extruding. This got me 8 months without a clog.

Second best thing is to get an E3D.

Mine did clog last winter because my Z Axis height was screwed up and the nozzle was jammed with the green painters tape I was using on the bed (lol).

SD2 w/ Heated bed. Mods: E3D MK5, Lawsy MKV, Glass Bed, printed filament stand

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Re: how to prevent noozle cloggin?

ill take your advice then, thanks a lot.

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Re: how to prevent noozle cloggin?

It might also be worth grabbing a few high E strings from a guitar store.
Being able to clean the stuff out with the string is kinda handy.

This is a crowd funding thing that I'm running: http://www.gofundme.com/bvi140 It's for pretty selfish reasons tongue

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Re: how to prevent noozle cloggin?

I don't have a ton of experience, but have noticed it gets harder to extrude before a print the longer it's sat there at temp. So, wouldn't a simple firmware change to force an extrusion now and then when sitting idle solve this problem?

Stock SD4 with 3/16" glass attached to stock (kapton-covered) bed with Aquanet.

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Re: how to prevent noozle cloggin?

Or dropping the temp after a certain time period at idle - wouldn't accidentally eat all your filament that way! smile

SD3. Mk2b + glass, heated enclosure, GT2 belts, direct drive y shaft, linear bearings, bowden-feed E3D v5 w/ 0.9° stepper
Smoothieboard via Octoprint on RPi

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Re: how to prevent noozle cloggin?

Proteus wrote:

Best way is to never ever leave your hotend on when not extruding. This got me 8 months without a clog.

Second best thing is to get an E3D.

+1 on both suggestions...I've had only 2 clogs in 2 years following this practice...and that's with a stock SD2 Hotend and switching to EcoFlex and back to ABS. 

I just got the E3D for my Ord Bot build and with the .4 nozzle I'm sure this will even improve those stats.

SD2 - Stock - Enclosure - Heated Bed - Glass Plate - Auto Fire Extinguisher
Ord Bot Hadron - RAMPS 1.4 - Bulldog XL - E3D v6 - 10" x 10" PCB Heated Build w/SSR - Glass Plate
Thanks for All of Your Help!