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Aluminium, self-assembled, no figures

POLISI3D Aluminium dual gear extruder, CR-10S Pro style, kit to assemble

A dual gear extruder from POLISI3D in aluminium alloy, designed for the CR-10S Pro and fitting CR-10, Ender 3, Ender 5 and Tornado 3D printers, supplied as a kit to assemble and described without a gear ratio or E-steps value.

Red aluminium extruder with its gears, a yellow tension spring and a push-in fitting

POLISI3D Aluminium dual gear extruder, CR-10S Pro style, kit to assemble

A dual gear extruder from POLISI3D in aluminium alloy, designed for the CR-10S Pro and fitting CR-10, Ender 3, Ender 5 and Tornado 3D printers, supplied as a kit to assemble and described without a gear ratio or E-steps value.

Printer fit
CR-10 (1.75 mm), CR-10S, Ender-3 and Ender-3 Pro, first bullet; CR-10 S4, S5, Ender-5 and Tornado in the title and third bullet; designed for the CR-10S Pro
Direct drive or Bowden
Absent from the listing
Gear ratio
Absent from the listing
Drive gears
Dual gear extrusion mechanism, title and second bullet
Filament path
Absent from the listing
Weight
Absent from the listing
Firmware figure
Absent from the listing
Amazon reference
B07W6SW4TN (same reference on 6 Amazon marketplaces)
EAN
0791300409524
  • All-metal aluminium alloy body
  • Dual gears for extrusion force, as the second bullet states
  • Must be assembled by the buyer

Best for: A CR-10 or Ender 3 owner who wants a metal dual gear extruder and will assemble and calibrate it.

≈ $10 / 12 €
Check price on Amazon

Specifications

Printer fit
CR-10 (1.75 mm), CR-10S, Ender-3 and Ender-3 Pro, first bullet; CR-10 S4, S5, Ender-5 and Tornado in the title and third bullet; designed for the CR-10S Pro
Direct drive or Bowden
Absent from the listing
Gear ratio
Absent from the listing
Drive gears
Dual gear extrusion mechanism, title and second bullet
Filament path
Absent from the listing
Weight
Absent from the listing
Firmware figure
Absent from the listing
Amazon reference
B07W6SW4TN (same reference on 6 Amazon marketplaces)
EAN
0791300409524

The POLISI3D extruder listing, bullet by bullet

Five bullets: fit for the CR-10 with 1.75 mm filament, the CR-10S, Ender-3 and Ender-3 Pro; a dual gear mechanism for high extrusion force and smooth feeding; an aluminium alloy part designed for the CR-10S Pro that can also go on Ender-3, Tornado, CR-10 and Ender 5 machines; all-metal aluminium alloy, to be assembled by the buyer; and better pressure pushing filament into the nozzle.

What POLISI3D does not give

No ratio, no E-steps, no drive type. The page describes the material and the gears and leaves out every number a firmware setting would need, so E-steps have to be calibrated after fitting.

The POLISI3D kit is metal and loose

Aluminium alloy throughout, and a DIY block to assemble. The third bullet calls it a controller, which reads as a translation slip for the extruder itself. The product photograph shows it assembled, in red, with a yellow tension spring and a push-in fitting on the side.

Availability

At the last look-up, the German, French, Italian and Spanish Amazon stores were asking 12 € to 16 €.

It is sold in the American Amazon store as well, in its own currency, which the euro figures above leave out on purpose.

The British Amazon catalogue lists the product, yet no seller was offering it.

Every figure here is Keepa’s reading on the date this page was last updated. Stock and prices can change at any time.

Prices quoted in this text were read on 15 September 2026. The live price is at the top of the page.

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