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3D Printed 21" Center Caps

Dan_Foothill

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After getting the run around from CS and lack of gear shop availability for 21" center caps. I decided to take some inspiration from many other forum members and make some 3D printed versions. I am a plastics engineer so I decided to take a slightly different approach. The color center caps on the aero covers are easily removed with snap fit tabs. I then reversed engineered the snap fit design from the center section of the aero covers and added locking tabs on the back side that matched existing off the shelf center caps. I think the design came out pretty good.

The Link to download this file is here: https://grabcad.com/library/rivian-21-wheel-center-caps-1.

I used a u/formlabs SLA printer to make this part. But I am sure FDM printers will work too.

Rivian R1T R1S 3D Printed 21" Center Caps IMG_4160


Rivian R1T R1S 3D Printed 21" Center Caps IMG_4161


Rivian R1T R1S 3D Printed 21" Center Caps IMG_4162


Rivian R1T R1S 3D Printed 21" Center Caps IMG_4163


Rivian R1T R1S 3D Printed 21" Center Caps IMG_4164


Rivian R1T R1S 3D Printed 21" Center Caps IMG_4165
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TheIglu

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Is the metal snap ring necessary?
 

Lpotter86

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I’m going to try these tonight with FDM printer with PETG. Will post results.
 

Lpotter86

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Couldn’t get the printer to get the PETG right. Used PLA. Tested on my spare tire. Snaps into place well. Had to scale it up in Cura. Still unsure if I'll use but printing the other 3 right now.

Rivian R1T R1S 3D Printed 21" Center Caps BE859313-DB1A-4539-8F15-44EE32405376
Rivian R1T R1S 3D Printed 21" Center Caps 9FAEC2B3-8038-4E4B-9E79-763273858C3B
 

RWerksman

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Couldn’t get the printer to get the PETG right. Used PLA. Tested on my spare tire. Snaps into place well. Had to scale it up in Cura. Still unsure if I'll use but printing the other 3 right now.
You very much do not want to use PLA for this application. It will get hot, deform, and likely send your center cap zinging off when taking a corner at high speed.

PETG or ABS is what you want to use here. ABS puts off noxious fumes when printing though.
 

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RalphB

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Couldn’t get the printer to get the PETG right. Used PLA. Tested on my spare tire. Snaps into place well. Had to scale it up in Cura. Still unsure if I'll use but printing the other 3 right now.

BE859313-DB1A-4539-8F15-44EE32405376.jpeg
9FAEC2B3-8038-4E4B-9E79-763273858C3B.jpeg
It's opening as 2.4mm in Cura. What size do you scale it to?
 

johnjackson99

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After getting the run around from CS and lack of gear shop availability for 21" center caps. I decided to take some inspiration from many other forum members and make some 3D printed versions. I am a plastics engineer so I decided to take a slightly different approach. The color center caps on the aero covers are easily removed with snap fit tabs. I then reversed engineered the snap fit design from the center section of the aero covers and added locking tabs on the back side that matched existing off the shelf center caps. I think the design came out pretty good.

The Link to download this file is here: https://grabcad.com/library/rivian-21-wheel-center-caps-1.

I used a u/formlabs SLA printer to make this part. But I am sure FDM printers will work too.

IMG_4160.jpg


IMG_4161.jpg


IMG_4162.jpg


IMG_4163.jpg


IMG_4164.jpg


IMG_4165.jpg
Please answer the scale question!
 

baron130

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After a few failed prints, I settled on 2.38 in. as spot on. You will need to hollow out the two circles that hold the center cap pins just a little to fit the pins properly. I’ve been printing in ABS using Bambu Studio on my X1C Carbon.

Rivian R1T R1S 3D Printed 21" Center Caps IMG_2406


Rivian R1T R1S 3D Printed 21" Center Caps Image 2-14-24 at 18.08
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Last edited:
 




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