JRB5

JRB5 Custom 3D printing parts, mainly based on Audi B5 platform. Follow on instagram. All by Jordan Roos

Bricklayers beta testing is under way. This will stagger the walls to increase layer adhesion and not have each layer fl...
24/06/2025

Bricklayers beta testing is under way. This will stagger the walls to increase layer adhesion and not have each layer flat on top of each other.
After all is calibrated I will be testing the strength in pressure holding capabilities vs normal printing.
Previously 5mm box held 35psi and strengthened held 70psi, keen to see if we can hold 100psi.
The previous test was done with a .8mm nozzle at .8mm line width, new set up is .6mm nozzle & .75mm line width. Will also be testing both enclosed and open prints on various plastics.


So I am not longer logged out of my Instagram account after almost 2 years. Things have also been very busy and the prin...
11/05/2025

So I am not longer logged out of my Instagram account after almost 2 years. Things have also been very busy and the printing was halted for some time. What's happened?

-Manifold tested in ASA held 20psi and no boom. Onto next steps in testing.
- working on printed fuel rails (free to download)
- designing duel & triple fuel pump brackets (free to download)
- designing valve covers (free to download)
- finished b5 cabin filter case (free to download)
- finished S4 badge trim surround (free to download)
- finished S4 18" rim hub caps (free to download)

As well as the manifold I will bring out more free downloadable products for the community, e.g. door cup holders, aero stuff, wide-body arches, diff bushing inserts.

Send me any ideas you think would be good for the community that I can add to the list.

3D printed intake manifold holds 20psi!!!Same manifold as used before but used silicone to prevent the fl**ge from warpi...
14/04/2025

3D printed intake manifold holds 20psi!!!

Same manifold as used before but used silicone to prevent the fl**ge from warping (this is still the cheap not temp rated plastic to come).
1.There were no issues while driving at all, no knock and in the video I held it in 6th for a good 10 seconds at full boost with IAT at 70^C.
2. It drove for around 100km over 2 days of use and only started to warp due to heat soak between drives.
3. I have done more research on the next type of plastic and have found a local shop that sells PPA-CF(high temp nylon-carbon fibre rated to 220^C) for a decent price and will most probably be using that as the final material.
4. I've made some adjustments the the manifold that will increase its strength while not using more plastic by making the plenum more round and taking out corners with more internal filleting.
5. I have some people lined up to test the manifold in the future but thanks to all that have wanted to try out, I may still need more test subjects in the future and will ask.
6. As far as I'm aware I have not seen anyone run close to this much boost in a printed FDM manifold in the world on any car. Might be a current world record but who knows.

Was able to get these done this week. Cowling delete kit and badge surround just to help make it pop! (Sorry for the dir...
10/04/2025

Was able to get these done this week. Cowling delete kit and badge surround just to help make it pop! (Sorry for the dirty bay)
Links to download and print for free

Cowl kit:
https://www.printables.com/model/1260563-audi-b5-a4-s4-cowling-delete
https://www.printables.com/model/1260563-audi-b5-a4-s4-cowling-delete
https://www.thingiverse.com/thing:7006001
https://grabcad.com/library/audi-b5-a4-s4-cowling-delete-1
Badge surround:
https://www.printables.com/model/1260566-audi-b5-s4-badge-surround
https://makerworld.com/en/models/1304868-avatar-audi-b5-s4-badge-surround
https://www.thingiverse.com/thing:7006002

I used a door seal to divert water to the sides.
As always I add the STEP. file if people want to make their own adaptions.

P.S more manifold info will be coming out soon!

Just trying to print the final version for test fitting but constantly running into jamming issues. Have tried many thin...
14/01/2024

Just trying to print the final version for test fitting but constantly running into jamming issues. Have tried many things to find the problem but not there yet.

70psi (5bar) was achieved with filleting and ribbing the inside of the box. That's a 100% increase over no reinforcement...
09/11/2023

70psi (5bar) was achieved with filleting and ribbing the inside of the box. That's a 100% increase over no reinforcement, just the ribs alone made it to 50psi. Just having fun experimenting with how internal structures help with strength.

Latest revision is on the print to be test sent for fitment with . Added heaps of filleting and ribbing plus ports in T...
09/11/2023

Latest revision is on the print to be test sent for fitment with . Added heaps of filleting and ribbing plus ports in TB fl**ge to aid air going to cyl #1. Hopefully this is the final revision before moving onto better plastic for live testing.

Very excited about this info! 5mm of ASA took about 40psi. And I made it this awkward shape on purpose to see how the bo...
02/10/2023

Very excited about this info! 5mm of ASA took about 40psi. And I made it this awkward shape on purpose to see how the box shape would go. The manifold will have better design characteristics and better layer adheision. Seeing how much more pressure this will hold with different iterations (like the internal ribs and filleting).

Im going to try do CF polypropylene instead of nylon as it is 1/3 the cost of nylon. And still has a heat deflection of 125 deg C, so well above the 90 deg.

Because the PP 😏is cheaper I can add more material without it costing much more for the manifold.

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Yarloop, WA
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