Dremel Turbine

by Landru Nov 2, 2011
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Thanks for the great design.

Is there any way to scale the impeller up (say 3x) and then thin out the blades afterwards? I'm assuming you don't want them 3x as thick.

Nevermind, got it. Can't wait to try this out. Printing the impeller housing now. 60+ hour print! I scaled it up to the size of my print bed. I accidentally printed the impeller first at 240% and realized the ducting wouldn't fit at that scale, so I'll have to reprint it with a diameter of 145mm.

Nice design, however I don't see exactly how to link the turbine to the dremmel or which shaft to use, maybe someone has some picture that can help me to understand. Thanks in advance

After I printed this with PLA and I was amazed at the CFM that comes out of it. Even more so when I mirrored the impeller and put it on my Dremel 4000. Threading it on is a bit of a pain in the ass. The CFM is a lot higher with the impeller mirrored. I haven't put it on our testers yet to see what exactly I'm getting but I can tell you that it definitely pushes more air on 15 of the dremel then my 8" desk fan on high. I'm planning on printing it in PETG next to get a little more strength out of it and bump it up more.

My keyboard has never been so clean. :)

Very cool thing!

I printed it, plate part with threading perfectly fits my CMI CSG-135 ! (at least very good for hands potection :-))

But turbine blades part doesn't connect to CMI CSG-135 shaft :-(
Does anyone has idea how to connect it? Or it only Dremel compatible?

P.S. Didn't print cover part of the thing yet.

Great design, works fine!

To the author - could you mirror the impeller and correct the photos?
Unfortunately people are not clever enough to realize that you are kidding them and everybody prints it the wrong way as suggested, even showing off on YouTube :-(

Has anyone tested it with the Dremel 4000?

just like a paradox, think to make a dremel acessorie into a dremel 3d printer for a dremel to make a dremel.... like thats supermindblow

What are the holes on the top for?

a shaft seal?
threaded water does not flow?

not to sound like a dick or anything but i think this is kind of useless

haha))) mate just find a passion in your life

doing a portable AC with this one now)

Its not useless...i for example do need this.
I want an air compressor to clean out my PC from dust and this is just perfect for this.

Not to sound like a d**k but about 99% (not proven) of things on Thingiverse are mostly entertaining or made to satisfy pure boredom.

So true. that said, I plan on hooking up a hose to this blower and using it as a blower on electrical parts when I assemble electronics.

not to sound like a dick or anything but i think this is kind of useless

Did you design this? Will you be willing to help me with designing a new impeller?

Spherical Harmonic Christmas Sphere
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Hello great work ! one of the file is corrupted the impeller file SLDPRT please could you fix it. Also you are missing the shroud file as well please if you could add. Thanks so much.
Im using Creo element program and trying to adjust some of the thing to fit please have Stp files if you have any.
Hello mate, please have it in STP files, I cannot load the top and bottom impeller case. please help !

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dremel spins the opposite direction and compressor spins wrong way has anyone fixed this and has a link to to stl file ? plz upload one if you havent id like to print this to make a forge fan

Beautiful project, I had some issues printing the shroud, but hope to arrive to print it upside down with some support grid.

Nice project but dremel spins the opposite direction and compressor dont make any pressure at all.

You can always mirror the files.

Would it be possible to modify the design to be able to have more output pressure with a smaller nozzle? When I put a small nozzle on it the air just comes out from the sides.

You hae to mirror the impeller so that is can compress air efficiently. Just use the mirror function and mirror on either the X or Y axis.

I think it works the same left or right-handed because centripetal force is what drives it, not the angle of the blades. The wrong angle would just add a bit extra drag.

Then why not just make the blades straight?

Efficiency. One way works with the blades, the other works against them. How much efficiency, I'm not certain. I suspect this was modeled after one found in a vacuum cleaner.

Nice! But was tricky to print for me, the horizontal tube it only attached to the bed with one line. It comes of really easily.

This looks awesome. I wonder if a tesla turbine style impeller would blow as well with more durability. I'll have to make this and try it with my rotozip.

Tesla turbine is tricky, the thickness of the gap vs the thickness of the gas/fluid is really important.

Hello I printed the impeller but the default file was made that the impeller very thin and flexible. does that happens to you too?

I would like to print a smaller version, but scaling the impeller would lead to too thin fins (say it quickly!).
had a look at the Solidworks file, but it seems that you use an
external tool to generate the part. Do you have the source of source?

I printed the impeller and then wiped it down with acetone to strengthen it. It spins very fast on my dremel. I'm kind of wondering if it wouldn't be a good idea to lessen the amount of fins and make the rest of them a little thicker?

I guess I am kind of curious about the impeller design philosophy too. What resources did you use to design it?

No philosophy at all. Just made it look like a generic turbo.

Awesome little thing... printed one in PLA then investment cast it in zinc for fun. Way cool.

Yeah, I want to see!

Does it blow good enough to replace those $5-10 compressed air spray cans for cleaning dust off the computers?

it moves a lot of air if the dremel is on high speed... a lot of air

For cleaning general dust out of a case, absolutely. You might still need a dust can/compressor for crevices, though.

I'm going to guess 60mph exit speed. Maybe a little higher with a reducer.

I guess this was the last piece for anyone who would like to build a 'Free as in speech'-robotic vacuum cleaner! NICE! Thanks!

Hah, well not untill we build an open source dremel!

Look into LRK motors.

The LRK might work, but this particular design will work best with a high rpm motor.

Any recommendations on print settings?

I used external only support, and .2mm layer height and w/t of 2.

There were a few threads which got printed in air on the outlet transition, but most everything else was spiffy.

Certainly not an 'easy' print though.

Looks like PLA, yah? Wondering if ABS makes sense or if I should stick with PLA. Thanks for the answer though.

I see no reason it wouldn't work fine in ABS. I just happened to be testing in blue PLA at the time. Even if the abs warps a tiny bit the tolerances should be loose enough for it to work fine.

I was Just wondering if anyone had made a nice turbo impeller - yup. This is just awesome