Safariland Comp 3 Donut Loader
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Safariland Comp 3 Speed Loader Speed Loader in a donut shape :)
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Updated at source:
Model information
- Source
- Printables
- Category
- Other Sports
- License
- Creative Commons — Attribution — Noncommercial
OVERVIEW
The Safariland Comp III Donut Loader is a simple bench tool designed to make loading Safariland Comp III speedloaders faster, easier, and more consistent.
Compressing the Comp III spring while inserting six cartridges can become tedious when preparing multiple speedloaders for practice or competition. This fixture supports the speedloader body during loading, providing a stable platform that allows pressure to be applied evenly while keeping both hands free to load cartridges.
The design consists of a single printed part, requires no hardware or assembly, and prints in only a few minutes.
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MECHANICAL COMPATIBILITY
Item | Status | Notes |
|---|---|---|
Safariland Comp III Speedloaders | Supported | Designed specifically around the Comp III body geometry. |
Six-Shot Comp III Models | Supported | Intended for six-round speedloaders. |
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DESIGN GOALS
Goal | Engineering Rationale |
|---|---|
Simplify loading | Provide a stable fixture that supports the speedloader during cartridge insertion. |
Reduce hand fatigue | Eliminate the need to hold the speedloader while compressing the spring. |
Improve consistency | Keep the loader square and stable throughout the loading process. |
Fast printing | Single-part design requiring no additional hardware or assembly. |
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SPECIFICATIONS
Item | Specification |
|---|---|
Construction | Single printed component |
Assembly | None |
Additional Hardware | None |
Print Orientation | As Modeled |
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BILL OF MATERIALS (BOM)
Qty | Item | Specification |
|---|---|---|
1 | Donut Loader | Printed Part |
No additional hardware is required.
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FILES INCLUDED
File | Purpose |
|---|---|
Comp III Donut Loader | Supports the speedloader while loading cartridges. |
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ASSEMBLY
No assembly is required.
Print the donut loader.
Place it on a flat, stable surface.
Insert the Comp III speedloader into the fixture.
Compress the loader and insert cartridges as normal.
Remove the loaded speedloader and repeat as needed.
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RECOMMENDED PRINT SETTINGS
Setting | Value |
|---|---|
Material | PETG Recommended |
Nozzle Diameter | 0.4 mm |
Layer Height | 0.20 mm |
Wall Count | 3–4 |
Infill | 20–30% |
Supports | None |
Print Orientation | As Modeled |
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TESTING / VALIDATION
I designed this fixture after loading large numbers of Comp III speedloaders for practice and matches. While simple, it significantly reduces the effort required to compress the loader spring and keeps the speedloader stable during cartridge insertion.
The design has no moving parts, requires no hardware, and is small enough to keep on a loading bench or in a range bag. It has become one of those simple tools that gets used every time I’m preparing revolver equipment.
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FUTURE DEVELOPMENT
Future revisions will focus on supporting additional speedloader models while maintaining the same design philosophy: simple construction, no hardware, fast print times, and straightforward operation.