Jun 8, 2015 | By Alec

The Cobra single extruder.

If you’ve ever replaced parts on your 3D printer or have looked into assembling your custom machine, you will have doubtlessly heard of Micron 3DP, who specialize in high quality parts (specifically extruders and hot ends) for the 3D printing market. Constantly trying to innovate their products, they have just unveiled a brand new line of all-metal extruders: the COBRA line.

Now as you might be aware of, filament extruders that are completely made of metal have one major advantage over those extruders that include plastic components: heat. While many extruders contain Teflon tubing or other plastic parts that can’t stand the heat very well themselves, this new line of all-metal extruders will, we are told, enable reliable and continuous printing up to 315 degrees Celsius. The biggest advantage of this is that it will enable you to work with a very wide range of more uncommonly used filaments, like nylons and high temp PLA. What’s more, Micron 3DP is also bringing out a special high temperature Cobra extruder capable of reaching temperatures of up to 400 degrees, perfect for filaments such as Ultem, Peek and Carbon reinforced Peek.

The Cobra J-head compatible extruder.

And Micron3DP, as you might know, specializes in these kind of 3D printer components. Located in Israel and a subsidiary of manufacture designers Micron E.M.E, they sell hundreds and hundreds of special extruders all over the world. Among their regular customers are professional 3D printing busineses, universities and specialist institutes. The Cobra line is even their third generation all-metal extruder, and has learned from the feedback on other parts. The secret of the Cobra line? ‘It uses a small, but powerful planetary geared motor which provides high torque in a much smaller and lighter package,’ they reveal.

Bowden/Rostock extruder.

For Micron3DP also promises that this new generation of extruders is faster and more reliable than ever, even with flexible materials such as NinjaFlex and PVA. What’s more, as the clip below illustrates, it’s easier to install than just about every other extruder out there. ‘A feature of the Cobra Extruder Line, as with all Micron 3DP extruders, is the patent-pending easily replaceable nozzle and guide, that comes with the Cobra. It takes less than a minute to switch to a different nozzle size or to a different material, without any change to the calibration of the Z height,’ Eran Gal-Or, Engineering VP at Micron3DP, explains.

The impressive high-temp model.

The complete Cobra line includes single, dual, J-head compatible, high-temp and Bowden/Rostock models. All can be found and ordered on the Micron 3DP website here.


Posted in 3D Printer Accessories



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Large 3D Printer ErectorBot owner wrote at 10/8/2016 5:07:53 AM:

I generally dont post much however. The metal extruders are the separation between a toy and a reliable machine. Not only does this extruder produce reliable, repeatable results. Also allows the full range of temperatures of materials used. Far past the ED3s ability's.. Really? Somebody would actually advise a plastic lined nozzle is better before taking the leap to a higher quality unit. News flash, the plastic sleeved nozzle is actually justa band-aid to a larger problem. The term you are all looking for is called "Heat soak". And yes if you undoubtedly dont know what your doing will probably never enjoy the finer higher aspects of this wonderful line of extruders. Bottom line is these extruders are capable of not only a higher output for hours on end. They are also bullet proof. And is like trying to compare a Cadillac to a moped...How fast can an ED3 run through 100LBs of filament with a 1mm tip at 300C...LOL Or how about running a .1mm smear for 3 months straight.. Yeah OK sure........ ErectorBot uses them and are just one a great example.. And others too. You will find companies and print shops that run alot of prints or engaged in manufacturing upgrade to them for the very same reason. Yes they are expensive but you get what you pay for. Not much wasted plastic here... ;) MOST RELIABLE EXTRUDERS EVER! GO MICRON!

naten wrote at 7/2/2015 3:43:01 PM:

Finally an extruder that capable of printing flexible materials!! Thank you Micron!

Mux wrote at 6/20/2015 7:32:16 PM:

My thoughts exactly, and its heavy & expensive.

RAMBo wrote at 6/9/2015 2:34:54 AM:

If you think a metal extruder will solve your heat problems, you are in trouble. If a plastic extruder melt or degrade, then the filament you try to push will melt too!! Impossible to push it trough the drive gear. In fact you want to keep that part as cold as possible for a better grip. Another thing that I don't like from this design is the metallic fan frame between the aluminium block (hot end) and the cold end. It suck the heat out of the heater and transmit it to the extruder. Look for E3D for quality extruder. They keep the warm part warm and the cold part cold.

buildstuff wrote at 6/8/2015 2:41:25 PM:

OK....I agree that having an all metal extruder does give the advantage of rigidity and high temperature operation but the main point of an extruder is also thermal isolation from the heated end and nozzle. I see a very big metal ring connecting the heated end to the inlet of the extruder. This is short-circuiting all that "finned" filament inlet tube so that more heat is needed to keep the extruder at the correct temperature and the filament will also be exposed to increased heat as it is pushed into the heated chamber....I doubt if anybody bothered to do any thermal analysis on this extruder.

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