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High Bypass Jet Engine Fan

by CATIAV5FTW Jan 17, 2016
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Hello, j'adore ce que vous faite, bravo à vous, est il possible de fournir les réglages idéal pour l'impression de cette soufflante. Merci beaucoup.

I'm about the print this on Prusa MK3. Printed the hub so far and 1 blade. The blade was too tight and could not fit and then broke when force was used. Any recommendations of adjustments on a Prusa machine. Using Prusa Control to create G code. Also which blade to print to keep with real engine? reversed or normal?

Looking to print this and to adapt it to AnDuong's turbine assembly (https://www.thingiverse.com/thing:3242245), what is the total fan diameter of the assembled disk? I understand it can be scaled, but I'd need to work out the scale multiplier :) Thanks!

Jet Engine Model
by AnDuong

Thank you for sharing the fan, it's amazing.
I printed a small version (50mm diameter).
I want to make a ducted fan.
I still have not had time to run the fan.

Curious if anyone has tested this to failure; e.g. highest RPM sustainable. My printer's out of commission right now but I may do it myself within the year.

Hello, think you for this part.
I create a spinner without stripe and annulus filer with support.

Hello, great looking fan. Can this be modified to fit your 3D printable Jet Engine? https://www.thingiverse.com/thing:1327093

3D Printable Jet Engine

Thanks. In theory, I suppose it's possible to scale it way down and mirror the whole thing since it spins the opposite way. The pieces would be tiny and hard to assemble. At that point, I don't really see the benefit over just doing the other engine's original fan.

Thank you for your reply. I should have checked the scale of the fan before asking.

Also having problems fitting blades to hub (Ultimaker3) I don't believe anyone is gonna be able to assemble this and get it to go together without a ton of filing or sanding. Hugely disappointed, weeks' worth of printing wasted. If you decide to print this I strongly recommend pring the hub, 1 blade, and 1 filler and verify the fit FIRST

Sorry to hear you're having problems. For me, everything fit firmly without any issues. I believe the most common cause for parts that are too tight is overextrusion. Alternatively, if you're using Simplify3D as your slicer, you can put a small negative number (.5ish mm give or take) in your horizontal size compensation (see attached pic). This will loosen up the fit. I recommend reprinting the hub in this way. Fillers too, if necessary. Not sure if other slicers have a similar setting to adjust...

Thanks, may look at that. Still strongly recommend printing for test fit BEFORE committing a 30-40 hour print. Chalk it up to experience. It might be a helpful idea to add test fit guides to the root description as I see alot of this same comment here. Just note on the extrusions.. My parts look much better than yours do, based on the pictures above and I was quite stunned when it didn't assemble. That's with a tuned Ultimaker. I may take a few sections of the components and run them thru my Form 2 just to verify original fit.

Interesting. I'd like to see your fan when you get it finished to see just how much better they look. I've seen far worse than mine, and I don't think the pictures do mine justice.

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Respect for making such a nice fan from pictures. As an engineer in Rolls-Royce I like your choice.

hey dude, awesome model. just printing out one now. Question for you, what is the total diameter of the assembled model?

sorry but the blade just cant fit in..
could u send me a little root one please?
i like this fan alot

I confirm that the adjustment of the blade feet on the hub is really too tight.
Otherwise, very beautiful room !!!
When is the engine going with it ? ;o)

Je confirme que l'ajustement des pieds de pales sur le moyeu est vraiment trop serré.
Sinon, très belle pièce !!!
A quand le moteur qui va avec ? ;o)

Your design is impressive!!
Could it be possible to add one more blade so it has 20 blades like the trent 1000 engine..?
That will be great!!

should i set support to 'everywhere' or 'touching buildplate'?

For which parts?

Woops, I was thinking of the disk there is some overhang on the 'hooks' on top

I would love to have this replace the fan blades in my stand up living room fan, would make for an awesome conversation piece!! Being new at this hobby, I wouldn't have a clue on how the hub would fit on let alone finding someone to modify this so it does?

Hi. The annulus filler REVERSED doesn't have the 2 hooks. Can you please correct this as I'm printing reversed fan blades. Cheers.

Did you ever get a correction?

Would you be able to create a "version 2" of the disk which can be printed without the requirement of supports on the inside diameter? These supports are really hard to remove. Maybe you could change the inner rings/grooves so they have angled or radiused overhangs? Accept you'l still need support for the tabs on the outside.

I suppose I could just get rid of the stiffener rings inside. Can't really see them anyway.

Great idea! I'm about to embark on printing this fan with the intention of attaching it onto a desk fan in our office ! We are an office of aircraft engineers (including a couple of engine specialists) and really like your work.

Uploaded the revised part with the suffix "no internal supports" appended to the name. Best of luck! And be sure to post it - I'd love to see it. And thanks, probably a good sign that engine specialists approve my models haha. I just took one class on it in college...

Fantastic. Thank you very much!!

Hi Chris!

Nice design! Just One question... Did you use any support materials on the disk? I am getting quite a lot hangings... Especially with the inner rings.

Yes, I used supports for the disk.

what orientation should the annulus filer be printer can seem to find a good surface to sit on the print bed with no supports??

Upright for me was good. Had it in an angle so it only have to support the front two hooks

Awesome design!!! I'm printing this with my prusa i3 and the fan blade doesnt seem to be fitting in the disk i was wondering why only me have this problem. If you could help me with that.

My guess is that you're overextruding.

How do fix this problem? Thank you!!!

Find the extrusion multipler setting in your slicer and reduce it. Should normally be between .85 and .90.

Very easy to print model, well done. Is this fan stage in the same scale as your 3D Printable Jet Engine and is it compatible with it ? The fan stage in jet engine model seems to be one single part so I'm not sure. Regards.
Tomasz Janiga

This fan is about twice the scale as the fan on the full engine. It also rotates the opposite way.

This print looks awesome! I wanted to ask what filament you use? The grey look unbelievable

Hatchbox PLA. Silver, specifically.

This fan is compatible with your Old 3d jet engine?
i think this assembly it's better for more print quality

It's twice as big and rotates the opposite way, so it's not compatible.

Wowee!! That is insane! How big is it when printed at 100% size?

About 11" diameter. I think the pictures make it look bigger than it really is!

That's what I thought. I just printed one of the blades. I love it!! At first I was a tad worried - I have a prusa i3 and I was wondering if I needed a bigger print volume... but its fine! Thanks! I'll upload a pic once I've completed it.
Oh yes - one other thing. What did you print it in? Will PLA be pliable after soaking in hot water (to make the spiral?) What about ABS?

Glad it's printing well for you so far. I did PLA. That will soften up enough to do the spiral. ABS is a higher-temp plastic so the hot water trick won't work. Maybe print just 1 or 2 layers on that, so it'll be flexible enough to wrap around the cone.

Well done! I used to build the real thing and you have got this design pretty much spot on. Cheers!

Hi! Cant figure out how to print the anulus filler :/ It needs supports (difficult to remove everywhere). All help is appreciated

What orientation are you printing it in? I printed mine vertically, the same orientation as shown in the 14th picture above. Just needed supports on the 2 connecting arms, and a brim around the edge contacting the build plate. It's not an easy print, so plan on printing extra to account for a few bad ones.

It looks awesome! I also made a similar one that is electric powered. I like how good the attachments of the blades are.

I printed a fan blade out and it came out pretty good..there was a small patch of material on the pressure side of the blade just above the root where it was produced slightly sunken compared to the rest of the surface..not sure if it is the file or my printer (cheap turnigy fabrikator)...other than that it came out really nice scaled at 80%. What is the best way to print the main hub? I assume print it with the Z axis aligned to the axis of the hub itself as opposed to the way it comes in?

Was there not enough infill?
I printed the main disk with its axis aligned with the z axis. It's aligned with the x during modeling, that's all. Post pics when you're done!

I printed with 15% infill I believe..it looks more like the outside vs the infill. I'm still pretty new to 3d printing so it very well could be my setup. I uploaded a picture of the blade for clarity. I printed out pie slices of the hub at different scales to verify that the blade would slot into the hub. I couldn't properly get the blade to slot into an 80% scaled hub (same scale as the blade) after a few different scales I was able to get it to slot into a 95% scaled hub...I am printing out the full hub right now ( at 95%).

what the best way to print the blades? i having a bit of a problem!!

Print it in the orientation shown in the blue file preview above. To keep it stable and stuck to the bed, i added several brim outlines. What have you tried so far?

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Wuau! Great design :D Thank you for sharing. I am planning on puting a shaft on bearings and maybe an DC motor on the end of it. Probably some kind of inertia wheel made of shreading old printings... Thank you, your work is highly appreciated!

I would love to see this :)

very nice, i work on trent 900s at work, so i def recognise it all, wasnt expecting the annulus infills, thats a nice touch, as is the proper curve in the dovetails! cant print it though, id be labelled a raging aerosexual at work!

Trent engines are my favorite, though GE's new engines come close. Aerosexual, lol! Go for it, you will not be disappointed!

yea on days off now, might have to, pick up some new filament to do it some justice too...will post pics once i do print it!