Anet A8 Filament Spool Roller Arm

by ulightme, published

Anet A8 Filament Spool Roller Arm by ulightme Jan 5, 2017

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I really like:

  • low profile of a spool roller vs tall holder
  • ability to quickly switch out spools no center rods no nuts to unscrew

I couldn't find a roller for my Anet A8 like the one for the Prusa I3 Mk2 by MartinMajewski http://www.thingiverse.com/thing:1832235

So I modified his arm to fit the Anet A8 frame and designed it in a way to hold multiple spools with just two printed arms.

Things you need to complete the setup:
1) 2 x rods, I used carbon fiber rods 7.8mm diameter ~27cm+ length
2) 4 x Martin's rollers that you'll need to print from thing 1832235
3) 4 x 608 (skater) bearings like these https://www.amazon.ca/gp/product/B00MM1FFUK

Edit: I've just added a Filament Guide / Filter to work perfectly with this Holder. Check it out http://www.thingiverse.com/thing:2256538

Print Settings


Anet A8






0.2 mm




You may need to drill out the holes a bit to fit the rod.

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Spool on top of printer, aka how to crack your acrylic frame version 2.

The large weight and the printer shaking it around is how you're gonna end up with cracked parts.

The second option to quickly crack your frame is by wiping it down with alcohol

??? Ok

Thank you for your input

Do the bearing just slide freely along the rod?

yes. The (the 3d printed wheels) have a grooved shape so they never roll out from under the spool.

Downloaded BUT only the STL file for the arms are there - I need the roller bearing housing as without these I can't use this design....????

2) 4 x Martin's rollers that you'll need to print from thing 1832235

Awesome spool holder, will post pic when I figure out how to use this app... My rods were a little large (0.5mm or so) - 30s with drill fixed this, build is still secure so it's all good.

3 questions:

1: where did you get the rods?

2: are these bearing good enough : http://www.dx.com/p/ec-bcs-7-608zz-carbon-steel-drift-board-skateboard-longboard-speed-skating-abce-7-bearings-8pcs-422147#.WOEfA_mGOUk

3: do you mind if i modify your design so it fits on a table instead of being clamped to the printer?

  1. hobby store, they are glass fiber rods used in RC planes as spars. I've seen others use threaded rod from home depot.
  2. yes
  3. I believe someone already did that, check remakes. But sure you can modify it as you please.

What type of filament are you using?

cool and much more better as all another spool holder what i have print. great

Opening the model in Cura leaves it without a top layer (When using layer view)
As well as PronterFace.
IDK what to do besides edit the stl in Blender :/

Edit: Shows up correctly in Blender..
Just gonna try printing it as a sample by scaling it down.
Edit2: (Back from Church) Tilting the model in Cura solidifies the top face. I'm assuming that Cura is just glitching out, so I'm gonna try printing it out at normal scale. (Didn't get a chance to test the small version, cause I had to go)

I am stupid.. I just realized that I had "Spiralize outer contour" checked..
Sorry! xD

Looks sweet! Have you had bed level problems like this guy did? http://www.thingiverse.com/thing:1751621

[Do not print] Anet A8 Spool/Filament holder

to be honest, I have level problems from time to time, it could be the weight of the spool on top ... but I think it has more to do with the way the frame sits and how it's not bolted to the table and how light it is.

I can't say I could directly blame these on the spool holder as I've had them before I had the spool holder.

Thanks for replying. I'm working on something similar but mounted over the vertical braces in hope to displace the weight over them and not flex the frame. We'll see how it goes.

I'll reference your creation and MM's.

Have a good one!

Thank you for for this! What is the total height with the spool? I plan on making this in the near future but I also am making a table with limited height restrictions. Thanks again. ~Eric

Love this design. I made it in black and it looks sweet. Works best if you don't buy unbranded filament from ebay which tangles up. I used threaded bars so I could lock off the ends with 8 M8 nuts, which makes it much sturdier. I opened up the holes slightly to allow the M8 bar through.

i found by not opeing the holes that the m8 rode will make threads in the 7.8mm holes. extra rigid!

Hi, could you post more details about the led strip you are using? ^_^
I liked the angle you used and I would like to know more about it. I appreciate your time.

Also, what kind/brand of filament did you use?

Led strip is just this one (http://www.banggood.com/5M-RGB-Non-Waterproof-300-LED-SMD-5050-LED-Strip-Light-DC-12V-p-925678.html?rmmds=myorder) it has an adhesive side so I stuck it on the sides and to this thing (http://www.thingiverse.com/thing:2004680) to hold up the strip on top.

I used these clips to secure the strip to the wall of the frame http://www.thingiverse.com/thing:2049749

LED strip holder for Anet A8
LED strip holding frame clip

Perfect!! I'll take a few pictures tonight of my new set up.

Question - How hard would it be to modify this to accommodate the Anet A8 Brackets to Reduce X-Axis Motion?http://www.thingiverse.com/thing:1872162
I have the T corners installed now to help but thought these brackets might also help?

Anet A8 Brackets to Reduce X-Axis Motion
by Leo_N

Yesterday I made and printed the first test project based on this. It went pretty well, today will make a small patch and make it available for you.

I'm interested in this modification too

I'm interested in this modification too.

interesting... it wouldn't be hard to modify the design to accommodate, but maybe more interesting would be to merge the two?

I like that idea except I have LED light arms already installed on the very far ends of the printer top as you can see in the picture. Having them separate pieces would allow people decide where to put them on top. Although printing together would be very strong.

Still, this spool arm design is absolutely perfect! I will only use this one unless you do a new version to allow for brackets.

Comments deleted.

Are you using any stabilization mods? While this is definitely a gigantic improvement over hanging a 2 pound spool off the edge with long arms, the a8 isn't the most mechanically stable to begin with, and any and every frame mounted spool holder will increase the amount of vibration.

not at the moment... I'm planning to install the y belt bracing and perhaps the frame braces. but as it is. the printer seems very solid on a sturdy heavy table.

I am super interested in the possibility to mix/join your designer with the brackets to reduce the X axis...Not sure if you have been trying to do it. My knowledges as a designer point to null so for me would be a huge task. I really like this design: http://www.thingiverse.com/thing:1872162 But it is incompatible with your filament holder.

Anet A8 Brackets to Reduce X-Axis Motion
by Leo_N

I will see what I can do ...

Awesome! Anyway, i will try to do also for myself. Keep talking and thanks!

Just started the print, can't wait lol really been looking for something decent like this.

how did it go?

I really like the translucent look for the arms! :-) Very cool!

Thanks Martin, yes It turned out quite well.