Side-Release Buckle Replacement - Pin & Ladder Lock - 24 mm - with M3 screw as a retaining pin for seabag, complete

It's a buckle with quick side opening and with Pin-Lock or Ladder-Lock for 24mm wide straps.

The special feature is that the buckle can be mounted without having to cut the loop band. Due to the screw used as a retaining pin, the buckle is very robust and can withstand high tensile forces.

If you don't need a direct replacement for a defective buckle, you can take a look at my new buckle design Side-Release Buckle - Pin & Ladder Lock - 24 mm - fully printable . This buckle is easier and completely printable - the idea was to make the insertable pin printable as well.

Overview of Models

Two Fastening Types:

- Pin-Lock type - Ladder-Lock type (only the male part currently exists) Common features:

- Produceability: good printable - Field Repair: Easy to replace in the field - Durability and Strength: very robust and withstands high tensile forces Pin-Lock Type

The pin-lock type is intended for a loop strap and can be fitted without the loop strap having to be cut and sewed.

Special features:

- Fastening Type: Strong, corrosion-resistant M3 screw as Pin. - Field Repair: - No sewing required - Requires only an Allen key for fastening - Webbing size: - width typ/max: 24.0 mm [0.95"]/24.6 mm [0.97"] - thickness max: 2.8 mm [0.11"] Since maybe not everyone wants to melt threaded inserts with a soldering iron, I have also created variants with a simple M3 hexagon nut.

Model/STL Name Nut w. M3 thread Retainer Pin

heat-set Insert Hex-Nut ISO 4032 M3x30 DIN912 M3x35 DIN912 M3x35 ISO7380-1

Female --M3-heat-set-Insert--M3x30-DIN912-- A 2 X X

Male --M3-heat-set-insert--M3x35-ISO7380-- C 1 X X X

Male --M3-heat-set-insert--M3x35-ISO7380-- D 1 X X X

Female --M3-Hex-Nut--M3x35-DIN912-- A 1 X X

Female --M3-Hex-Nut--M3x35-ISO7380-- A 1 X X

Male --M3-Hex-Nut--M3x35-ISO7380-- C 1 X X X

Male --M3-Hex-Nut--M3x35-ISO7380-- D 1 X X X

Ladder-Lock Type

With the standard ladder lock type, the clamping length of the strap is adjustable.

Special features:

- Webbing size: - width typ/max: 24.0 mm [0.95"]/24.6 mm [0.97"] - thickness max: 4.3 mm [0.17"]

Print recommendations

I printed most of the design iterations on the Crality K1-Max, but I also printed a couple on the Prusa MK3. If you are struggling too much with the settings, please let me know. I can provide you with 3MF print files for Orca Slicer or PrusaSlicer.

Female Pin-Lock Design A

- Material: - The outer buckle part has to be more robust and not as elastic as the inner buckle part. - ASA or PETG for outdoor use in very warm environments and/or in strong sunlight. I used Polymaker PolyLite ASA white and it works well. - PLA for normal use, however, should withstand the mechanical stresses just as well. However, bear in mind that the advantage of ASA/PETG over PLA would be that the closure would be slightly more elastic and more UV-resistant. - Nozzle diameter: 0.4 mm - Layer height: 0.20 mm - Perimeter: 4 - Infill: 100% - Support: is not needed Male Pin-Lock Design C/D

- Material - The inner part of the buckle must be somewhat flexible. - ASA , Nylon or PETG for outdoor use in strong sunlight. I used Polymaker PolyLite ASA white and it works well. However, I recommend PETG as it will also print successfully on printers without a closed housing. - ABS for normal use could also be used. - Nozzle diameter: 0.4 mm - Layer height: 0.20 mm (better use Varaible layer height ) - Perimeter: 4 - Infill: 100% - Flow-Rate: [Tip] try to avoid excessive under-extruding (0.95- 1.0) - Support: is needed, only on the printbed - Brim Type: Mouse ear - Ironing: [optional] all top surfaces (for a smooth top surface) Note: Ensure strong layer adhesion between the layers and between the extrusion lines.

Male Ladder-Lock Design B

The same print settings as for the Pin-Lock design,

but with the following differences:

- Print Speed: [optional] reduce the print speed between Height Range 1.0 - 1.6 mm (if the first 3 layers over the support structure does not adhere sufficiently). - Walls printing order: [optional] Inner/Outer/Inner (at least available in Orca Slicer)

Mounting material

Image Quantity / Part Description

1 piece / M3 x 30 mm DIN 912 Socket Head Cap Screw with hexagon drive, A2 stainless steel

(1 Stk. M3 x 30 mm Zylinderschraube DIN 912, Edelstahl A2)

1 piece / M3 x 35 mm DIN 912 Socket Head Cap Screw with hexagon drive, A2 stainless steel

(1 Stk. M3 x 35 mm Zylinderschraube DIN 912, Edelstahl A2)

1 piece / M3 x 35 mm ISO 7380-1 Button Head Screw with hexagon drive, A2 stainless steel

(1 Stk. M3 x 35 mm Linsenkopfschraube ISO 7380-1, Edelstahl A2)