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Jet Engine

by MakerBot Jan 5, 2015
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Hello. I want to Print this jet engine. Could you please tell me with which Printer you have print this jet engine>?

I use makerbot desktop to modify some of the parts. some of the parts are bigger than makerbot desktop edit area!

Are all the assets with accurate dimension?

Thank you

it seems that they used a makerbot replictor plus. the parts fit perfectly on my print bed

Hi how many red part we need to print ....

when i print the comp fan the bottom of the blades are not so good. is there a way to print support material? top of the blades are great

So what the problem? Slicer could do this.

I have finished printing about half of the model and so far it is coming out nicely.

Can anyone recommend a good way to bind separate pieces together? Cyanoacrylate? Model glue? Elmers?

Thanks - sam

methylene chloride

how big is it when it is put togrther

As big as you want to print is (and can, of course )

Hi! I would like to print it and put in front of my opened windows, so it could rotate. Is that possible? Does it rotate easily? Thank you!

No, it is not rotated well, only by hands. No ballbearigs... And all red parts can rotate separately, not with all shaft.

For Makerbot Replicator 5gn it is 88% scale.
Supports needed.

Is this some sort of joke? you guys actually went and stole GE's model and didn't give them credit?? First this, then the faulty extruders, every time you guys hit rock bottom, you just print yourselves a shovel.

It's not the same as GE's model. Regardless, both are nowhere near as accurate as they could be. GE's turbine blades are inexplicably backwards...

While this model is huge and has been fun to print, there are flaws in the design that need to be addressed. There are files missing for the cradle/supports. The front most cradle mount file is missing, as well as the legs file for the rear most support.

I had to trim off the square peg for the fan hub because there is no recessed squared hole in the last piece of the shaft.

Will the files be updated with the missing pieces? Will the model for the shaft be altered? This is an official Makerbot account model and it really should have the models correct and all there.

What are your modifications, are you modifying the pieces with 3d software? Can you provide your mods?

Perhaps it's the old file, pliers and huge hammer routine.

hi I printed this model i have some issue actually there is one stand is missing can anybody sujjest me

Guys, take this as a very hard but exiting CHALLENGE!!!!!! I am making mine and have discovered that parts need to be modified and things must be discovered how they work. Want things simple, go to amazon and buy one pre-built.... want to be proud, build this!!!!

If it was labeled as a puzzle or a work in progress I would accept this but it's not, its essentially labelled as a challenging complete model from a group of professionals, it shouldn't really have incorrect parts in it that don't fit together and confusing numbers of blades in the stl files!

Comments deleted.

This model was stolen from GE's model.

Comments deleted.

it looks very tough, any more hints on how its made? resolution of print, infill, anything special someone might need to know?

can you please post some kine of instructions on how put the blads get put on the shaft that would be very helpful
thanks fstaiger

It looks impressive but I'm not sure this is good to learn how turbofan engines work. At first glance it looks highly detailed and accurate but there are some important things wrong with this model.

The fan - the blades should have twist to them, just like an airplane propeller. As it is now it is more of a paddle. Search Google for "turbofan blade" and check out the images to see what I mean. Some drawings you will find get this wrong too (one called Turbofan-Catia-3D for example is wrong), look for photos or highly detailed drawings.

The compressor - if this were real there would be no compression occurring. With each stage the space that the air passes through should be getting smaller - that's how it gets compressed. In the exhaust section the opposite occurs, with each stage the space gets bigger.

This model appears to have no stators. The stators are critical for a turbofan to work. Search Google for "Turbofan cutaway" or "turbofan stator". Leaving out the stators is, in my opinion, the biggest thing wrong with this model. The stators are sets of non-rotating blades between each set of rotating ones. They remove the "spin" from the airflow and direct it into the next rotating turbine.

Finally, this type of engine would be "dual spool". That means there would be an axel within an axle. The big fan on the front would be connected to the furthest aft exhaust turbine. The rest would be on a separate axle. This is because the fan turns much slower than the compressor section. The first exhaust turbine powers the compressor while the aft turbine powers the fan. There are even some engines that takes this a step further and have three spools. Search Google for "Turbofan spool".

So, are you dissapointed this won't power your 3-D printed plane with realistic accuracy? Its a desk model for you to look at, not put on an engine test bed and see how many Horsepower it makes.

As I said above, it is not good as a teaching tool, which is how it is "marketed". They say "Get to know how engines work on a whole new level". There are too many things wrong with it to make it an accurate example of how the real thing works. My only reason for commenting was to refute that statement. You will not learn how engines work using this model.

It would not have been much more work (if any) to make this model more accurate. The creator obviously does not know how real turbofan engines work, they would not have made the errors that they did otherwise. My personal opinion is that it is not a good idea to present a creation as a learning tool when you don't have the knowledge required to make it as a learning tool.

Well, Hopefully you can enjoy one of the GE engines or Snecma engines that are out there. Maybe Rolls Royce or Honeywell will make a 3D printed engine available soon.

Come on...really??
To put it in (way too) simple terms a fan blade should have close to a 45 degree angle at the tip, That is true for even a fan at your desk. It was true for any propeller driven aircraft in WW2 aand still is today for childrens paper windmills!!!!!
That thing should at least move air, which it wont, or only a small amout, more so back and forth. Check out https://www.thingiverse.com/thing:1327093
its made by an aerospace engineer who knows what hes doing, and that is something to look at. This model is like making a 6 cylinder motor and calling it a v8, just wrong!
and if you don't care, put a beer can on your table and call it a jet engine!

I find it quite important what ModelStation pointed out. If you can't appreciate someone taking his time to point out some engineering aspects, keep it to yourself and stop trolling...

3D Printable Jet Engine

If MBI can not build a simple printer that will work how on earth do you expect them to get a complicated piece of machinery like a Jet Engine right?

Could we get more details on how many pieces need to be printed more than once, specifically the blade types?

Thanks!

This model is great!
But, can use “FDM”3D printer to print?
Print 1:1 scale?

Thank you very much for sharing of designers?

This looks FANTASTIC!!!
And looks like a real challenge for all 3D printers out there!
Well done to the designers!

It's a shame the build platform on my UP! isn't big enough :(

Yes you're right, personnaly I will try on my Printrbot Simple.
The biggest part seems to be the "Drum_Left_Pt2". If I scale it down to 0.36, it should fit.