Neutron - Open Source 3D Printer

by layerone, published

Neutron - Open Source 3D Printer by layerone Mar 7, 2017
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Neutron is one of two open source 3D printers designed by Layer One, the creator of Atom 3D Printers (Link to Proton: http://www.thingiverse.com/thing:2149685)

While the RepRap project produced some functional printers, it was clear that nobody had intended to produce something for the desktop of the discerning designer. That’s where Layer One’s Proton and Neutron come in. If you're an open-source advocate, a tinkerer, and a designer with an eye for aesthetics, you’ll want one of these on your desk.

All the printed parts of the printer is right here. Neutron was built in OnShape. Log in to remix your own version of Neutron, it's free as long as you share what you have made. Visit our website for the BOM, CAD files, assembly guide and everything else.

Neutron Website : http://www.atom3dp.com/mini/
BOM : http://www.atom3dp.com/zh/mini/#neutron

Atom Website : https://www.atom3dp.com /
Fanpage : https://www.facebook.com/atom3D
Instagram : https://www.instagram.com/atom3dp
Group : https://www.facebook.com/groups/atom3dp


Print Settings


Atom 2.5 EX






0.2mm Layer Height


3 Loops, 15% Infill Minimum

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When i do the maths by extracting the information from the firmware its telling me that it cannot work

Are you sure the firmware is set up correctly?

Has anyone from the US made this printer? I am interested in building a delta but some of the parts are hard to source and I would like to use a more standard hotend. Any recommendations?

Quick question. I’m considering making this and noticed the E3D version which I have a spare one. Looking at the Effector Cover though all you do is open center hole up but not the slot. How do you fit and E3D hotend into this without the wider slot to reach the center? Worst case I’ll design my own but if someone has tried it and gotten it to work with what’s here I’d be interested

@Layerone: can you please post videos of working prints for your Neutron and Proton model?

Which one of them is faster, i want to make one, but i cannot decide for which i should go?

In my opinion you should go with proton because if a delta printer has a 2020 cm buuld volume it is actually smaller than a 2020 rectangupar printer

Besides that most prints are easier to print with a rectangular printer as ypu can fit more parts on

can i increase the print volume?

Both the Makes, which appear to be done by Atom3D employees, use slightly different parts than is included in the files here.

There is a different extruder mount on each Make, neither of them match the Motor Holder or each other. Where is the Motor Holder part included here supposed to go?

The purple printer in Makes seems to use a different part for the ends of the magnetic arms.

Case-hardened 12mm steel tube is almost impossible to find, and the BOM does not provide a link. LM12UU bearings would chew away at mild steel tube over time.

The 30mm blower fans on the yellow Make have a cooling duct which is not included here.

The Z wobble on the purple Make's prints is pretty bad, constraining three lead screws was probably not a good idea.

Overall this seems a part-finished design where the Makes do not represent the actual product, and the design has some flaws which need to be addressed.

Is there no active cooling for PLA parts? :/

Anyone think this would work with nema 14? It's £20 for 5 nema 14 but £30+ for 3 nema 17

All connections fit perfectly,
thank you,

I have torsion problems at the carriage. The carriage turns pivoting himself over the lead screw, and the print quality is horrible

I have my Neutron ready to build. Can you please provide a link that will show me how to install the Ramps 1.4 and Arduino properly for the Neutron? I'm having trouble finding the instructions. Thanks!

This printer is supposed to be used with the electron command module unless you want to mod it. Im working on it now myself and I was confused where it would be placed as well.

Thank you for responding, but I actually meant what jumpers are required on the Ramps 1.4 board, how to install the firmware, etc.

This printer seems to be a great project!
Can you share the e3d version of the effector and effector cover in step please?

Interesting, looks like a nice 3d printer for my kids, how big is the build area?

ϕ14cm x 20cm
hope your kids like it, please post photos if you have one made!

Does anyone know an approximate cost of the Bill of Materials? I see they have a nice detailed BOM on the site but lacks an estimate on cost.

im very interested if you get to find out the cost, thanks

We sourced parts from China on Taobao.com and Alibaba. I think we managed to keep the cost below $150 USD. I imagine it wouldn't have cost more than twice as much if everything was to be sourced in the USA.

Can this be printed in PLA? What is the best filament to use when printing 3D Printer parts?

The printer you see here is entirely made of PLA! You can also use ABS, the difference is minor.

This looks like a printed clone of http://www.thingiverse.com/thing:1666370 with no attribution.

Just because it's a delta printer doesn't mean it's taken from there, there are only so many ways to design a printer. But that printer does look nice!

That's quite a nice printer too, but we honestly never seen it until now, thanks for sharing the link.

aside from it using some of the same ideas, it looks very different

I find this very interesting ! This is a work of art !
I have a question, Is a printer fully driven by threaded rod (especially a Delta printer) not going to be slow ? Can you give some spec's about speed for print and travel ? Anyway i'm very interested in making one?

Yes, it will need to run fairly slow for good print quality. It's also quite susceptible to print quality issues due to bent screws.

Most people's Mini Kossels can't run over 40mm/s anyway, so the speed thing may not be much of an issue.

My personal opinion is that the cost savings from eliminating three rods and three bearings isn't worth the loss of stability from using a screw as a linear rod.

Thanks for the praise Archiclem! You're right this doesn't run very fast, but at least it is able to print smooth parts. We did this not for cost saving purposes but really for the esthetic. You're more than welcome to modify it into something stronger!

I can also confirm you have a Huge Virus. Your web is infected it is"Spora Virus Ransomware".

We updated the website to close the loophole that made us vulnerable to spora virus attacks, about 24 hours ago. We are deeply sorry for what happened.

Can I order parts from ATOM?

we currently don't offer them yet, feel free to use the BOM to source the parts

You're website is infected with the malware present in this article. I was just prompted to download the chrome font, i have confirmed with google this does not exist.

how is that possible? do you have a screenshot of it? please send it to [email protected]
are you sure it wasn't just a missing web font or something, because our website is bilingual (English and Mandarin)

I can confirm the error. The page shows up fine in any other web browser and even on Chrome's Android browser. On the other hand, I am going to have to put one of together to see how it goes. It looks awesome.

I saw this "Font not found" malware on http://atom3dp.com/ about 10 hours ago.
Your website may be hacked and insert javascript to show "Font not found" error, and let people to download and run the malware.
the web text change just like this image , all turn to ???????. Its seem only work on chrome.

Just get message from anti-virus said blocked a attack from chrome.
Here is the screenshot. http://i.imgur.com/hdPxq33.jpg

Please kindly check the code of your website. Thanks

Anyway, awesome printer :)

Hello everyone.
Really appreciated for all the reporting. We had a sweep and actually found the code. We have no idea how it got there but I think we managed to fix everything. Please let us know if there is still a problem! Thanks!!!

Update: This malware uses a loophole in Wordpress to bypass the server and insert the pop up message on viewer's browser. It's a new hack and is the most serious hack that Wordpress has ever encountered so far. They issued a patch very recently (but I guess they didn't make a point on how important it is to do that update) anyways we are now patched and safe. We are very sorry for what happened.

Hello Guys !
Now your website seems to be ok !
Anyway, really really really interesting printer!

Sweet, finally! biggest crisis for the guys at Wordpress ever.