3D Printed Jet Engine - Part 3: Assembly Guide

In Part 3 of this mini-series, Chaps walks you through a step-by-stop guide of how to assemble the 3D printed jet engine found on Thingiverse (published by CATIA5FTW).
Other Videos in This Series:
- Part 1: Background - • 3D Printed Jet Engine ...
- Part 2: Printing & Processing - • 3D Printed Jet Engine ...
- Part 3: Assembly Guide - You Are Here
- Part 4: How Jet Engines Work - • 3D Printed Jet Engine ...
- Bonus: Assembly Guide (Quick) - • 3D Printed Jet Engine ...
Links:
- Thingiverse Page: www.thingivers...
- Part Stackup Excel: www.thingivers...
- Part Stackup Image: www.thingivers...
- Screws: www.boltdepot....
--- You need 77, so get a bag of 100
- Washers: www.boltdepot....
--- You need 146, so get 2 bags of 100
- Nuts: www.boltdepot....
--- You need 77, so get a bag of 100
- 6003 Bearings: www.amazon.com...
--- I bought 4, you only need 2
- 6204 Bearings: www.amazon.com...
--- I bought 4, you only need 2
Other Info:
- Printer Used: Prusa i3 Mk3 - www.prusa3d.co...
- Material: 1.75 PLA (Hatchbox & Amazon Basics)
- Print Time: 10 Days, 9 Hours, 11 Min
- Final Weight: 2.8 lb
- Diameter: 8 inches
- Length: 16.5 inches
Social Links:
Social Links:
/ bchapy
gowtaccom.weebl...
/ tac_com

[@cotyoran0652]

5:00 shits, i glued that white shaft to a next step bush before i attach these grey little rotors. So, i needed to cut grey rotors to attach it :(

[@2be3dprinted20]

Thanks for this video! made my life a lot easier. I didnt have to use much glue as the fittings were quite snag. For the stripe in the front nose I put it in warm water so it was flexible when applying.

[@TacCom]

Interesting idea. I've tried using a heat gun (lightly) before, but you have to be really careful with that. For the water, did you soak it to heat it up, then dry it off a bit before gluing it on? Just wondering about the glue adhering if the part is still wet.

[@2be3dprinted20]

@@TacCom I use a heatgun to get rid of some of the small hairs... but indeed you must be very carefull. What I did with the stripe was: dip it in hot water and when soft shape it around the cone bit by bit. After that it had almost the correct shape. Then I just let id drie and glued the beginning and end with a small dot of glue. worked perfectly.

[@skellerex]

I'm gonna make it print by my company as a demonstrator but probably in SLS 3D printing, hope it will works well !

[@CalebPham-sz5sj]

hi there, i printed bearings for the jet engine and they spin pretty well. should i glue the bearings to the shafts?

[@TacCom]

You can, but it shouldn't be needed. If you do, make sure to spin it for a while while it dries so that you ensure no glue got into the bearings. Also, IDK what the longevity of printed bearings are. May be safer to not glue them so that they're replaceable.

[@CalebPham-sz5sj]

Thanks, will do

[@isharaparanawithana8147]

Hi, May I know if you have a 3D model file for the fully assembled version (say STL or OBJ file)? I'm thinking to use it for an AR application.

[@footballboyreciever8369]

People are making this and selling it on ebay from 50 to 500 dollars

[@kylekirsch6446]

Hah i saw this. Way overpriced though. If you can get one for fifty thats not a bad deal.

[@TacCom]

I think it's close to ~70 for materials and print time. ...not including any processing, set up, wear and tear, ect. It depends on how cheap you can find the hardware and bearings.

[@FredrikNilsson100]

Great vid! But I'm having issues with the HPT-section it seems. When I spin the fan the LPT spins, but HPT does not (and spinning HPT does not spin fan and HPT). Any ideas where the problem is? And good ideas on how to fix it?

[@TacCom]

This is a "dual spool" engine. The LPT drives the Fan and the HPT drives the HPC. So, it sounds like it working properly. The 2 spools should spin freely from each other.

[@dufric88]

Question, how do you get your model spinning as freely as it does? I was able to shave plastic in various places to create the necessary clearances such that nothing is scraping, but because of the grease, my bearings are way too gummy to spin more than one rotation with a push. I even purchased another brand of bearings and had the same issue.

[@TacCom]

Clearances were a big part. But for the video, I used a leaf blower to blow into the engine and make it spin.

[@dufric88]

@@TacCom I figured there was a blower involved. My main issue is in the LPT. The HPT spins beautifully, but it seems like no matter how I slice and print or sand, the LPT always wobbles and rubs. Any tips here?

[@andrewwinsor5025]

@@dufric88 I'm running into the same issue - I found that making sure the shaft was on exactly straight helped a good deal, and the rest was able to be taken care of with some aggressive sanding. LPT gave me far more issues than any other part of this build!

[@l.w.c.2519]

Your issue is the bearings themselves. Sealed bearings are full of grease as you indicated, which creates a ton of resistance for such a light model like this. Grease is useful in bearings when they are under much more load and need to last longer. Take the bearing seals off and remove all of the grease with something like brake cleaner. Then add a couple drops of light oil instead. Your model will spin much more freely, guaranteed.

[@Istandby666]

Has anyone thought of putting CO2 cartridges in the combustion area for propellant

[@TacCom]

Not really designed for thrust, so I doubt it would be worthwhile other than a quick gimmick.

[@Istandby666]

@@TacCom It might blow it up ...lol

[@vincef.8261]

Hi there, could you build me a kit version? How much would you charge me. I dont own 3d printer. I dont own one. Thank you.

[@TacCom]

Sorry, I have no desire to sell kits. I've built a few kits for my friends, but it's quite a lot of time/effort to do so. It's just not something that I'd wanna go through again.

[@vincef.8261]

@@TacCom Ok! Just thought I'd ask.

[@huewihcnik]

I felt like a swiss watchmaker trying to put the nuts on the screws at 8:17 with tweezers

[@TacCom]

Yeah, some of it can be quite tricky. Super worth it when done though! :)

[@jester9482]

What did you use for the LP shaft connector?

[@TacCom]

Connecting front LP shaft to afy LP shaft? There's a small brick that slides into each of them.

[@kennethcampingdiary1976]

How about the motor and electrical part ?

[@kylekirsch6446]

Is there an electrical aspect. I think he spins it by hand

[@TacCom]

Leaf blower off screen :p

[@alvarosanchez7320]

right now i cant buy the screws or nuts. Do you think it will work if I 3d print them? And also, are the washers essential for the engine? thanks for the great video, I hope you answer :)

[@alvarosanchez7320]

And by the way, do you know where can i find them to print them?

[@TacCom]

I don't think 3d printing the bolts/screws/washers/nuts. Threading wouldn't work well at that scale. Washers probabaly aren't essential... But they probabaly help. If you can't wait to get ahold of the parts, I guess you could just glue them.

[@alvarosanchez7320]

GowTac-Com thanks a lot :))

[@djipreview]

Took me one day to print

[@Vev79]

Bambu x1C?

[@twmvandijk]

At 3.51 min in this explanation the swirl plate is placed in the wrong position. It should be placed a little bit lower between the two "rails".

[@TacCom]

I've made a few of these. This was my first, and I was dumb :p

[@2be3dprinted20]

thanks for the comment...

[@juliand2107]

what swirl plate?

[@twmvandijk]

@@juliand2107

[@juliand2107]

@@twmvandijk thats me

[@juliand2107]

Thanks! Anyone know what turbine model this is based on?

[@TacCom]

It's not based around any specific engine.

[@gr8motive]

@@TacCom From what i can see, its based on a Trent 900, with some modifications.

[@TacCom]

Yeah, that looks pretty similar.

[@rtwileyrc8030]

Trent 900 is a 3-spool design. This model only has 2-spools. There is hardly any similarity. What has many confused is I designed a nacelle for this model based upon the Trent 900. But the core engine itself it not based upon the Trent 900.

[@worldwidepig]

@@rtwileyrc8030 Is this Nacelle model you speak of the one with the Chevrons on the rear of the nacelle? If so, you should probably be aware that the Chevron design is a Boeing design and is utilized for the Trent 1000 engine on the Boeing 787. The Trent 900 powers the Airbus A380 and hence does not have the Chevrons on the nacelle.... Just FYI....

[@minercraftal]

Finally somebody made the real technology, thank you

[@twmvandijk]

I have no idea how to send you a proper answer. If you send me your email adress, I can send you the proper answer.