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#WATCH KAHIN TO HOGA ALL EPISODES UPGRADE#

This is not only a waste of time but also filament. To get rid of this extra filament, the printer has to purge the hot end by printing a large throw-away tower next to the part that is being printed. First off, there is residual filament left over in the hot end from the prior filament after a new filament is loaded. I have heard that this second iteration is more refined than the first, but there are still inherent limitations of this approach. Instead of throwing in the rag, Prusa redesigned the whole system to be more reliable. The Prusa i3 MK2 that I worked with had the multi-material upgrade, and I can’t say that I made it through more than 10% of my prints without a fatal jam. How robust could a system like this be? I speak from experience when I say that the first iteration of this design was a downright failure. A printed part will have hundreds of layers, and most likely, this filament handler would have to unload and load different filaments many times during a single print.

However, I also was concerned about the complexity of this approach. When I first heard about this approach to multi-material printing, I was really intrigued because you would not have to worry about extruder offsets with there being only 1 extruder. How is this even possible? Well, an automated filament handler can unload and load filament from a choice of 5 spools into a single nozzle.

#WATCH KAHIN TO HOGA ALL EPISODES UPGRADE#

The Prusa i3 MK2.5S/MK3S has an optional upgrade that allows their printers, which only have one extruder, to print up to five different materials. Let’s backtrack and take a look at two other methods that facilitate multi-material printing. I jumped the gun by saying that the best way to print multiple materials is through separate extruders. However, for those with deeper pockets or more technical knowhow one can purchase/build a 3D printer with two Independent Dual EXtruders (IDEX). These flaws with fixed dual extruders are not deal breakers and can be overcome with a little patience and an ooze shield.

The unused extruder can bump into the printed part or unintentionally leak material which is known as oozing.

Only 1 extruder can be printing at a time.

However, in my eyes, there are two issues with fixed extrusion: If you are looking for something a little more exotic, then consider the Kraken, which is a quadruple fixed extruder. The Chimera by E3D is a popular fixed dual extruder that is compatible with many existing printer builds. I converted my MakerGear M2 from single extrusion to dual extrusion some years ago. For this reason, many single extruder printers can be readily upgraded to fixed dual extrusion. There are no changes required in the linear mechanics of the printer.

You have to connect the extra stepper motor for the extrusion drive, as well as the second thermistor and heating element, to the motherboard. A fixed dual extruder is only slightly more complex than a single extruder. when the first extruder moves so does the second) this is a called “fixed” setup. When two extruders share a carriage (i.e.