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Aerodynamic Twin-Duct Fan Splitter

Created 1 months ago

Workshop & Toolsfan-ductcooling-manifoldairflow-splitter120mm-fanmodular-assemblyventilationslip-fit
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Description

A dedicated airflow splitting manifold engineered to channel output from a standard 120mm cooling fan into twin 60mm cylindrical ducts. The system features an aerodynamic internal Y-wedge to evenly distribute incoming air left and right, ensuring minimal turbulence and balanced static pressure.

Design Features

  • Modular 3-Piece Build: Prints as an independent center distributor and two identical 190mm slip-fit extension arms.
  • Integrated Venting: Each 60mm diameter arm includes three evenly spaced 12mm exhaust ports along its lower centerline.
  • Exact Fitments: The center unit handles a standard 120mm case fan, complete with correctly spaced mounting points, while robust male collars provide tight, removable connections to the extension ducts. Total assembled span reaches precisely 500mm.

Photos

Technical views

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SpoolScope — Filament Remaining Gauge

SpoolScope — Filament Remaining Gauge

SpoolScope is a two-part gauge for estimating how much filament remains on a standard spool, made for spools that sit out of easy view in an AMS or on a shelf. The rail hooks over the flange rim; the sliding block rides on it with light detents, so you can push it down until it touches the filament, lift the gauge away and read the result. Raised ticks and numbers plus an unambiguous arrow on the block make the measurement clear without needing line-of-sight while the gauge is in place. Features Two printed parts: a rail with a rim hook, and a detented sliding block. Gram scale from 0 to 1000 g, with ticks every 50 g and numbers every 100 g. Ticks follow filament geometry rather than an even spacing: closer together near full, wider apart near empty. Arrows on the block tip directly toward the scale, and the detents hold the reading after the gauge is lifted off. Hook gap of 4 mm, sized to clear flanges from 2.8 mm to 3.6 mm thick. Dimensions Flange diameter: 200 mm. Hub outer diameter: 95 mm (from a measured Polymaker spool). Full-roll diameter: 170 mm (estimated from a 1 kg PLA roll on a 95 mm hub and a 65.6 mm spool width). Hook gap: 4 mm. Fitting and calibration Sized around Polymaker and Inland 1 kg spools; other brands are worth checking against the hub and flange figures above. The scale can be shifted by a single fixed offset if a first print reads consistently high or low, so a weight check against a known spool is worth doing before trusting the numbers. If the error differs between a full and an empty spool, the hub and full-roll values are the ones to correct. Print notes Both parts are laid out flat on the print plate. The block contacts the filament at its outer edges rather than at the centre, so a reading can sit slightly high; a weight check against a known spool is the best way to confirm the scale.

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