What You’ll Need<\/h3>\n<\/div>\n<\/div>\n\n\n![\"\"](\"https:\/\/img.facfox.com\/imgs\/2022\/06\/01\/0e2c13f998b7b026.png\")
You can even 3D print yourself a filament cutter! (Source: JeEk via Thingiverse)<\/figcaption><\/figure>\n<\/div>\n<\/div>\nGenerally speaking, the best filament for performing a cold pull is nylon. It\u2019s typically recommended because it\u2019s naturally slippery and thus less likely to snap when pulled out of the nozzle. That said, if you don\u2019t have any nylon lying around, go with your next slipperiest and least brittle material.<\/p>\n
Aside from some filament, you\u2019ll need some cutters to cut a piece of filament to use, and keep some pliers handy to use to remove the filament slowly and steadily. And that\u2019s it!<\/p>\n
Steps<\/h3>\n![\"\"](\"https:\/\/img.facfox.com\/imgs\/2022\/06\/01\/0b90fbc08734d14d.png\")
To perform a cold pull, push the filament into the hot end before it starts heating (Source: Prusa Knowledge Base)<\/figcaption><\/figure>\nHere\u2019s how to perform a cold pull:<\/p>\n
\n- If there is one, begin by removing your\u00a0Bowden tube<\/a>\u00a0from the extruder head.<\/li>\n
- Heat up the hot end to the printing temperature of your chosen cold pull filament while removing the old filament.<\/li>\n
- Feed\u00a0the cold pull\u00a0filament through the nozzle until it starts oozing out a little.<\/li>\n
- Cool the hot end while applying constant pressure on the filament strand. This ensures the tip of the strand molds to the shape of the nozzle\u2019s interior while cooling.<\/li>\n
- When the hot end is about 60 \u00b0C, you can release the pressure. By this time, the clog or dirt is hopefully stuck to the cold pull filament strand.<\/li>\n
- Heat the nozzle up once again to the printing temperature of your filament and start pulling it out. Do this step more carefully if you\u2019re using PLA, as there\u2019s a high risk of snapping it instead of pulling it out in one piece.<\/li>\n<\/ol>\n
Tips<\/h3>\n![\"\"](\"https:\/\/img.facfox.com\/imgs\/2022\/06\/01\/c5eeb587a35e6faa.png\")
Repeating the cold pull process will gradually clean your nozzle (Source: Ultimaker Support)<\/figcaption><\/figure>\nIf you performed these steps correctly, then you\u2019ve now made a negative mold out of the nozzle. Repeat this process until the nozzle is completely free of any old filament or other contaminants.<\/p>\n
If you\u2019re doing this with a filament in the same color as the one that got stuck, then it can be very difficult to see your progress. It\u2019s always best to use a different color, with lighter colors being the best to show dirt removal, and nylon filament being the absolute best option.<\/p>\n
If the cold pull process doesn\u2019t resolve your clogged nozzle, make sure that everything is clean by trying the other methods in our\u00a0article on nozzle cleaning<\/a>. If you\u2019re still having issues, you might want to try using a\u00a0cleaning filament<\/a>.<\/p>\n
Generally speaking, the best filament for performing a cold pull is nylon. It\u2019s typically recommended because it\u2019s naturally slippery and thus less likely to snap when pulled out of the nozzle. That said, if you don\u2019t have any nylon lying around, go with your next slipperiest and least brittle material.<\/p>\n
Aside from some filament, you\u2019ll need some cutters to cut a piece of filament to use, and keep some pliers handy to use to remove the filament slowly and steadily. And that\u2019s it!<\/p>\n
Steps<\/h3>\nTo perform a cold pull, push the filament into the hot end before it starts heating (Source: Prusa Knowledge Base)<\/figcaption><\/figure>\nHere\u2019s how to perform a cold pull:<\/p>\n
\n- If there is one, begin by removing your\u00a0Bowden tube<\/a>\u00a0from the extruder head.<\/li>\n
- Heat up the hot end to the printing temperature of your chosen cold pull filament while removing the old filament.<\/li>\n
- Feed\u00a0the cold pull\u00a0filament through the nozzle until it starts oozing out a little.<\/li>\n
- Cool the hot end while applying constant pressure on the filament strand. This ensures the tip of the strand molds to the shape of the nozzle\u2019s interior while cooling.<\/li>\n
- When the hot end is about 60 \u00b0C, you can release the pressure. By this time, the clog or dirt is hopefully stuck to the cold pull filament strand.<\/li>\n
- Heat the nozzle up once again to the printing temperature of your filament and start pulling it out. Do this step more carefully if you\u2019re using PLA, as there\u2019s a high risk of snapping it instead of pulling it out in one piece.<\/li>\n<\/ol>\n
Tips<\/h3>\nRepeating the cold pull process will gradually clean your nozzle (Source: Ultimaker Support)<\/figcaption><\/figure>\nIf you performed these steps correctly, then you\u2019ve now made a negative mold out of the nozzle. Repeat this process until the nozzle is completely free of any old filament or other contaminants.<\/p>\n
If you\u2019re doing this with a filament in the same color as the one that got stuck, then it can be very difficult to see your progress. It\u2019s always best to use a different color, with lighter colors being the best to show dirt removal, and nylon filament being the absolute best option.<\/p>\n
If the cold pull process doesn\u2019t resolve your clogged nozzle, make sure that everything is clean by trying the other methods in our\u00a0article on nozzle cleaning<\/a>. If you\u2019re still having issues, you might want to try using a\u00a0cleaning filament<\/a>.<\/p>\n
Here\u2019s how to perform a cold pull:<\/p>\n
- \n
- If there is one, begin by removing your\u00a0Bowden tube<\/a>\u00a0from the extruder head.<\/li>\n
- Heat up the hot end to the printing temperature of your chosen cold pull filament while removing the old filament.<\/li>\n
- Feed\u00a0the cold pull\u00a0filament through the nozzle until it starts oozing out a little.<\/li>\n
- Cool the hot end while applying constant pressure on the filament strand. This ensures the tip of the strand molds to the shape of the nozzle\u2019s interior while cooling.<\/li>\n
- When the hot end is about 60 \u00b0C, you can release the pressure. By this time, the clog or dirt is hopefully stuck to the cold pull filament strand.<\/li>\n
- Heat the nozzle up once again to the printing temperature of your filament and start pulling it out. Do this step more carefully if you\u2019re using PLA, as there\u2019s a high risk of snapping it instead of pulling it out in one piece.<\/li>\n<\/ol>\n
Tips<\/h3>\n
Repeating the cold pull process will gradually clean your nozzle (Source: Ultimaker Support)<\/figcaption><\/figure>\n If you performed these steps correctly, then you\u2019ve now made a negative mold out of the nozzle. Repeat this process until the nozzle is completely free of any old filament or other contaminants.<\/p>\n
If you\u2019re doing this with a filament in the same color as the one that got stuck, then it can be very difficult to see your progress. It\u2019s always best to use a different color, with lighter colors being the best to show dirt removal, and nylon filament being the absolute best option.<\/p>\n
If the cold pull process doesn\u2019t resolve your clogged nozzle, make sure that everything is clean by trying the other methods in our\u00a0article on nozzle cleaning<\/a>. If you\u2019re still having issues, you might want to try using a\u00a0cleaning filament<\/a>.<\/p>\n