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An auger: a deep helical flight wrapped around a thin shaft, rather than the shallow thread of a screw.

The image shows the solid OpenSCAD renders at outer_diameter 25 · inner_diameter 8 · height 60 · pitch 12.

CC0

Auger thread

remixcad/auger-thread@1.0.0

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Parameters

from source
mmDiameter over the flight.
880, steps of 1
mmDiameter of the shaft the flight wraps.
340, steps of 1
mmLength of the auger.
10200, steps of 1
mmDistance between turns.
240, steps of 1

Showing the render for these values.

Description

What is this

An auger: a deep helical flight wrapped around a thin shaft, rather than the shallow thread of a screw.

What you use it for

Moving material rather than holding things together. Feed screws, extruders, drills, and mechanisms that have to carry something along as they turn.

Design notes

The gap between the outer and inner diameter is the flight depth, and that is the number that decides how much it moves per turn. Keep the inner diameter thick enough to take the twisting force, because a thin printed shaft will shear before the flight fails.

Parameters

outer_diameter is over the flight and inner_diameter is the shaft. pitch is the travel per full turn, so a larger pitch moves more material per revolution.

Use with your agent
{
  "mcpServers": {
    "remixcad": {
      "type": "http",
      "url": "https://remix-cad.vercel.app/api/mcp"
    }
  }
}
get_model("remixcad/auger-thread@1.0.0")

Returns the manifest, the source, the import closure and the license obligations. Full MCP setup.

Parameter table

Parsed from the Customizer annotations in main.scad
Parameters of Auger thread, with the ranges the source declares
NameDefaultRangeUnitDescription
outer_diameter258 to 80 step 1mmDiameter over the flight.
inner_diameter83 to 40 step 1mmDiameter of the shaft the flight wraps.
height6010 to 200 step 1mmLength of the auger.
pitch122 to 40 step 1mmDistance between turns.

Lineage

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License

Whoever downloads this takes these obligations along
  • remixcad/auger-thread@1.0.0 is CC0
  • remixcad/threads@1.0.0 is CC0

Source

main.scad is the entrypoint
main.scad
// Uses threads.scad by Ryan A. Colyer, released with CC0 into the public domain. Published on RemixCAD as remixcad/threads.
use <remixcad/threads/threads.scad>

outer_diameter = 25; // [8:1:80]
inner_diameter = 8;  // [3:1:40]
height = 60;         // [10:1:200]
pitch = 12;          // [2:1:40]

AugerThread(outer_diameter, inner_diameter, height, pitch);

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