![\"\"](\"https:\/\/birkbinnard.com\/blog\/wp-content\/uploads\/2017\/03\/IMG_20170325_075656-697x1024.jpg\")
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No, this is not a multi-extruder or multi-nozzle print. Although my printer has dual extruders and a Y-adapter allowing it’s single nozzle hotend to print using 2 different filaments, I have never been able to successfully complete a dual extruder 2-color print.<\/p>\n
But what I have been able to do is switch filaments in the middle of a print. This is possible because my printer’s firmware has 2 very convenient commands: Pause print & move, and Resume print. This has enabled me to continue a long print at the point of running out of filament on one spool by simply switching to a new spool. The spool changing process is fairly simple:<\/p>\n
First, I use the Pause print & move command to pause the print when the printhead is at some internal location – such as some infill or the interior loop of a vertical shell. This stops the print, raises the printhead vertically about 2 inches above the last printhead position, maintains the nozzle temperature, and keeps the fans running. I then manually pull out the current filament and feed in the new filament. I push some of the new filament through the nozzle to make sure I have cleared out the old filament color and of course clean off the end of the nozzle. Finally, I run the Resume print command to restart he print, and the printer does exactly that – returns the printhead to the last position and continues printing with the new filament.<\/p>\n
![\"\"](\"https:\/\/birkbinnard.com\/blog\/wp-content\/uploads\/2017\/03\/IMG_20170325_074546-759x1024.jpg\")
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As you can see from this close-up photo there is no visible seam or discontinuity at the point of color change. Since most of the parts I print are large ones I have found myself with a fair number of short spools of filament, none of which are capable of a complete print. But using this technique I’ll still be able to use the filaments simply by switching colors during a long print.<\/p>\n
Here is a 3D rotatable image of the STL file for this part:<\/p>\n
[canvasio3D width=”500″ height=”500″ border=”2″ borderCol=”#F6F6F6″ shine=”1″ backCol=”#000000″ mouse=”on” objPath=”fins2<\/a>” objScale=”0.25″ objColor=”#fc9400″ lightSet=”1″ reflection=”on” refVal=”2″ ambient=”#888888″] Help=”off”] [\/canvasio3D]<\/p>\n Note that, to make the part more interesting I gave it an oval cross-section instead of a simple round one. This photo shows thatsomewhat better than the top one:<\/p>\n Here is the completed part on my printer:<\/p>\n Print time: The part is actually 298.8 mm high; the control panel shows the printhead at it’s home position of 365.00 mm.<\/p>\n Slicer: Craftware<\/p>\n Layer height: 0.200 mm<\/p>\n Print speed: 100 mm\/sec<\/p>\n![\"\"](\"https:\/\/birkbinnard.com\/blog\/wp-content\/uploads\/2017\/03\/IMG_20170325_081053-700x1024.jpg\")
<\/p>\n![\"\"](\"https:\/\/birkbinnard.com\/blog\/wp-content\/uploads\/2017\/03\/IMG_20170325_074503-576x1024.jpg\")
<\/p>\n![\"\"](\"https:\/\/birkbinnard.com\/blog\/wp-content\/uploads\/2017\/03\/IMG_20170325_074343-1024x556.jpg\")
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