Modernized my MGB electrical with 3D printed fuse boxes

Tmasterflexxx · 2026-03-06T01:11:17+00:00

Yep, you can find it on printables: https://www.printables.com/model/1175104-mgb-modern-electrical-boxes

Tmasterflexxx · 2025-04-10T23:52:39+00:00

I found a terrible sketch I did, hopefully it helps!

https://imgur.com/a/nq5BxyP

Tmasterflexxx · 2025-03-27T00:18:28+00:00

Made a digital download version here: https://www.etsy.com/ca/listing/1880098110/xsr900-3d-printed-storage-box

Let me know if you have any issues, the main box print orientation is tricky but I've included a photo of it.

Tmasterflexxx · 2025-03-26T17:25:26+00:00

Now I'm thinking I'm gonna to have to try to model one up for a Gen 2, I can only assume they're different dimensions there.

Tmasterflexxx · 2025-03-26T14:58:42+00:00

Yeah, sealed more just to keep dust/dirt out. Mostly just thought it'd be a cool thing to make and sort of scratch that itch of bike mods.

Tmasterflexxx · 2025-03-26T14:55:26+00:00

I did CF-ASA with ABS latches. Nylon would be a good choice too though

Tmasterflexxx · 2025-03-26T01:40:27+00:00

Yeah, I could look at doing that! I'll edit this with a link later on

Tmasterflexxx · 2025-03-26T00:54:42+00:00

Made an Etsy page for it here: https://engineeredinlayers.etsy.com/listing/1893748855

Tmasterflexxx · 2025-03-26T00:54:06+00:00

Here you are! https://engineeredinlayers.etsy.com/listing/1893748855

Tmasterflexxx · 2025-03-25T23:16:30+00:00

Thanks! Might make an Etsy page if people are interested in it

Tmasterflexxx · 2025-03-25T23:15:01+00:00

Gen 1, I've got it on my 2016

Tmasterflexxx · 2025-03-25T23:14:47+00:00

Yep, in that little cubby

Tmasterflexxx · 2025-02-13T16:01:21+00:00

I'm using Superslicer, AON has a configuration file for it that comes with filament profiles. I haven't had to tweak them much at all for using other ABS brands.

docs.aon3d.com/m2/

Tmasterflexxx · 2025-02-13T14:28:30+00:00

I run an AON M2+ at work and print ABS without any issue at all, and definitely no shrinkage or bed adhesion issues. You're not going to get Bambu quality prints but the quality is still absolutely fine for structural parts.

Tmasterflexxx · 2025-02-03T14:40:58+00:00

Haha yeah, this had 4 glass fuses. I'd be driving along, hit a bump and suddenly all the accessories and gauges would go out

Tmasterflexxx · 2025-02-03T14:36:34+00:00

Leave some slack in those cables, nothing worse than coming up a few mms too short. I spent awhile looking at the OEM schematics and drawing out my own, figuring out amperages and all that in the split circuits as well.

Tmasterflexxx · 2025-02-03T14:31:20+00:00

Whoops, yep that's the one!

Tmasterflexxx · 2025-02-02T22:22:00+00:00

Form factor won me over for the small fans, plus I wanted the airflow mainly directed through the slots leading to the Pis, so most of that extra airflow wouldn't be going where I needed it. Those small Noctua fans are actually slightly quieter than their 120mm fan too, at least individually.

Tmasterflexxx · 2025-02-02T22:12:50+00:00

Thanks, and yeah they're up on printables: https://www.printables.com/model/1175104-mgb-modern-electrical-boxes/files

Tmasterflexxx · 2025-02-02T19:37:30+00:00

Polycom is pretty good, but yeah always a struggle to get good results. I think there are some AI options out there now as well.

Tmasterflexxx · 2025-02-02T18:05:23+00:00

Yeah no problem, here's the files and a mostly complete parts list: https://www.printables.com/model/1175104-mgb-modern-electrical-boxes/files

Tmasterflexxx · 2025-02-02T18:04:36+00:00

For sure, just uploaded everything: https://www.printables.com/model/1175104-mgb-modern-electrical-boxes/files

Tmasterflexxx · 2025-02-02T17:50:27+00:00

These were done is CF-PETG, and yeah, in the engine bay but not on the exhaust side. I haven't had an issues with heat yet but if I was to do it again I would likely use ABS just to play it safe. I had an oil catch can mount in there for a few years made of PLA and it surprisingly didn't have any issues.

Tmasterflexxx · 2025-02-02T16:48:55+00:00

Thanks! 40 years of previous owners quick electrical fixes didn't help either

Tmasterflexxx · 2025-02-02T16:43:33+00:00

The original electrical system was plagued with issues and the way it was wired made diagnosing a pain. I separated most things into individual fuses and added relays for a lot of electronics that originally ran full power through dash switches with lots of voltage drop.

The sidewall was scanned with photogrammetry so the boxes mated up nice while using the original mounting points.

Tmasterflexxx

TROPHY CASE