Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

R.U.M.B.A. Case with two 40mm or one 60mm Fan

by e-nozzel, published

R.U.M.B.A. Case with two 40mm or one 60mm Fan by e-nozzel May 31, 2014


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close the bottom of the box with kapton-tape (last pic)
box has 2mm walls

Download the Clips to Mount it on a MendeMax 1.5 or T-Max:
:) have phun
i´ve kicked out the 1.6mm wall Version...
Version with Slot to connect Display (Needs to be cutted after printing to get the cable in)

  • Lid with 60mm Fanduct
  • File: "Rumba_Case_V2_Diplay_Endstop_2mm_Walls_10mm_higher.stl"
  • File: "Rumba_Case_V2_closed_bottom.stl" same but bottom closed with 0,6mm thickness to get rid of the kapton tape...
    excanged the 40mm-Fan-Version with a thicker one wich also has Support for the overhang area. filename: Rumba_Lid_V2_2x40mm_Fan_Support.stl
    added two files of the lid wich have 3mm thickness and no cutouts on the bottom.
    mounting plates for OrdBot and DesignSpark file of the closed bottom Version of the box.

i´ve made a new Version, much more stable and with a lid wich takes a 80mm Fan and the Full Graphic Display:

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I need the same for Ramps1.4 :-(

Arduino+Ramps1.4 Case with Clips for Mendelmax and T-Max

Hi, yes I saw it but I like the design of this box.

ah ok. so at the moment i have mayor problems with my RUMBA, if i can´t fix them in the next two weeks i´m going to switch the new Printer to ramps1.4... if i do so a new design for the ramps is also coming up... ;)

Great, then I will follow :)

I was able to get both pieces printed over the weekend. The thicker lid with supports is perfect, nice and strong! The solid bottom box is actually not thick enough to get a good finish, I only got 2 layers when printing at 0.3 mm layers and it takes more than that to make the bridging look good over those big gaps. I would recommend a completely flat bottom for max strength and appearance. The sides could be a little thicker too, I'm worried about breaking it where the vent holes are cut for the fan exhaust on the left side.
I will download design spark mechanical and see what I can figure out. Can you post the files so that I can try editing them in this?

ooops, didn´t seen your reply... i´ve uploaded the "closed bottom" designspark-file of the box.
please upload your makes! ;)

I will upload it tonight! I used the open bottom design because I also did not see this reply, but I'll print the closed on too in case I ever have a reason to take it off and switch it. It works very well!

Okay, here's another. The supports work very nicely. I would say the top and bottom of the fan holders (the non over hung parts) could use) the same additional thickness that the over hung parts got. I would probably print the lid without any cutouts on the bottom if it was available because it would be stronger, but it does help reduce warping. I wish I could help you with this but I only have sketchup.
I almost had the lid printed but then my computer died because I forgot to plug it in! I will print both the lid and 2 mm box tomorrow and post a pic when I'm done.

i did the cutouts at the bottom not only to reduce warping. mainly i want to reduce print time and save material...
but you wanted the "no cutout" Version so here it is!
i´ve uploaded both, the 2x40mm and the 1x60mm fan Version with 3mm thickness and without cutouts at the bottom.
btw.: try designspark mecanical instead of sketchup. i tried sketchup and designspark is a much more usefull tool to do .stl files! and it´s for free too! ;)

Thanks for including several suggestions that I brought up so far! Just a tip for anyone printing the lid- be sure to turn on "avoid crossing perimeters" if you are using slic3r. My first attempt did not have this and the hot end brushed over the middle piece between the fans and ruined it. I would also recommend printing at 100% solid infill.
If you are still taking suggestions, my lid is still coming up too thin and not having good layer adhesion in the slanted area opposite the fan mounts. It seems like it could use some more thickness in this area because it is very over hung and long. The fan mount fan seems to come out fine.
Is the cut outs on the bottom of the lid just to have less area touching the bed to reduce warping? It does stick very well, but I have good adhesion overall. It looks a little sloppy on some layers but the top still comes out smooth, so thats all that matters. Again, thanks for the case!

Thanks for the suggestions! i like to get the things better with the help of others, so please go on.... ;)
i´ve kicked out the 1.6mm Version cuz this one was a bit floppy and makes updates the double work...
new Version of the 2x40mm Fan Lid is also uploaded. this one has the cut out´s a the bottom reduced form 1mm to 0.5mm, increased the thickness of the overhang-parts, added Support for the backside and the thin part between the fans on the fan-side.

Also, another question. I'm super nervous about bending the fuses like you have done in order to get them to fit in the box. It hasn't finished printing for me yet. Any interest in a taller version to avoid bending those down and possibly breaking them?

i´ve added V2 files. a 10mm higher version with more holes to let the air out and with a hole for the endstops. and the same V2 with closed bottom. :)

i cant Export to .skp with designspark mecanical :/
but i uploaded some new files with a Slot for the Display cable and a 2mm_Walls-Version of the case... ;)

Very nice, thank you! Did you just run your end stop cables thru one of the other ports? If that doesn't work it would be easy enough to drill a small hole.

to be honest, i haven´t connect any cable to the Rumba yet. i´m building a new printer wich has only the X-axis finished till now...
i´m thinking about that display to add to that printer too! is there enough space to place it in the lid beside the fans?
do u have a link to the dimensions of the Display?
i guess there will come some othere versions of the lid soon... ;)

I have actually not received mine yet either, but it is on my list to do. My RUMBA is fully up and running, you will love it. I don't have the exact dimensions but several users have posted cases that you could mod. It does say that it comes with 30 cm cables, so you would have to find a way to hide those.
This is currently the best RUMBA case on thingiverse, IMO. I was working on one but this is better. All it needs at this point is end stop wire holes.

Very nice design, I like your work. Is there anyway you can post the objects in .skp? I would like to modify it to include a cut out for where the LCD controller connects because I want to add that to my RUMBA. Thanks.