Belt Buckle - Roller Coaster Style

Quick release style belt buckle. Requires a metal spring.

Belt buckle in the roller coaster style, fitted for a 1.5in~37.5mm wide belt.

Requires a metal compression spring acquired separately that does not exceed 6mm diameter. I pulled my springs from a spring assortment kit bought online, but you can probably find springs lying around as long as you can get two identical. For reference I used a 5.5mm diameter spring with an uncompressed length of 15mm. Assembly makes use of two quarters/coins(is it more likely someone has quarters or a screwdriver at home? \_(ツ)_/ )

If you are having trouble finding metal springs try this other model that is entirely 3D printed:
https://makerworld.com/en/models/1576090-belt-buckle-roller-coaster-style#profileId-1658213 
 

This version is “Belt Buckle-A002”

There are three variations separated into different folders: 

• “Buckle(3pin-1hole)” = Has 3 bolts and only 1 hole which requires you to sew a loop on belt. This is more or less the default configuration.
• “Buckle(3pin-1hole)” = Has 3 bolts and 2 holes on both sides, no sewing required.
• “Buckle(2pin-1hole)” = Only 2 bolts and only 1 hole.

Build instructions are included in a pdf file.

Printing Estimates/Stats:
15% Infill - 23.66g - $0.47 cost(PLA) - 1h3m printing time
 
*Note: there are alternative style options for: "Buckle 3"

*There is a slight gap issue, especially the 2pin variant, that can possibly be solved by gluing the back a bit and clamping together overnight. Try to avoid getting glue on the moving parts.

*Not meant for climbing or to hold up anything you value highly.

Parts Lists  For Printing:

(x1) - Buckle 1 [*requires support]

(x2) - Buckle 2 [*requires support]

(x2) - Buckle 3

(x6) - Buckle 4 [*consider using brim]

(x3) - Buckle 5 [*consider using brim + support]