July 6, 2026
Description
So Jeeps have their Ducks. The Grenadier has not had a similar mascot, but it does have the L-track rail. It also has a ‘Toot’ horn. Both of these are unique, and I’ve put them together.
Behold, the… Doo-dad? The Trinket?
These can be personalized with a text modifier on the circumference, and traded with other Grenny owners, or people interested in the. The L-track mechanism is a simple push on, slide and release. No tools needed.
The L-track attachment point is modular, so I’ve also developed a key chain and magnet attachment point, for the god-less communists who got a Grenadier without an L-track.
I have a number of other trinkets, designed, or you can make your own. I’ll be posting some more accessories over the next few weeks.
Have fun!
Design and Assembly Details
This is the latest version of my L-Track attachment hardware. It is designed to hold trinkets to the L-track with a simple push-slide-pull action,
The L-track adaptor is printed in three parts.
The Base unit
A Plunger to hold it in place
A 'bridge' to hold it all together and provide rigidity
Once assembled, it is designed to twist-lock into place of a 3D printed 'trinket'
Print in ASA for best thermal performance when exposed to the sun. This version should be able to be printed in PETG, but earlier versions without the 'bridge' would deform on hot days, on a dark color IG.
Use 0.2 height, and 3 perimeters. Infill doesn't really matter since the parts are so small, but use 40%.
NOTICE THAT THE 'PLUNGER' IS ASYMMETRICAL!!!!
The two shelf/ears are not the same size! The longer of the two must be put in first and the the base of the plunger 'pinched' to make it enter the base.
ONLY INSERT THE SPRINGS AFTER PUTTING THE PLUNGER IN PLACE!
The springs actuate the mechanism, and also keep the plunger in place.
Springs are available on Amazon, I think they are ball point pen ones. About $0.10 each.
Once the springs are in place (see pics), push the 'bridge' down, with the two posts engaging the springs. (see pics). Push one end of the bridge totally in and then press it down so that it is flat.
The base and the bridge have 'nubbins' at the end in case dimensional tolerance are off.
The bridge holds the springs on place. The plunger may need a few cycles to move freely.
Included is a solid version of the mating channel for the completed base. Use it as a negative volume on a model for attachment point.
Included is a complete TOOT button STL so you can use color change on layer height to get a black, red, and white print with a single nozzle printer.
There is also a folder with the three parts as separate STLs so you can use a multinozzle printer.
Also included is a key chain adaptor and also an adaptor that takes a magnet to make a fridge magnet.
License:
Creative Commons — Attribution — Share Alike
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