QIDI i-Fast
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Description
The QIDI i-Fast is an enclosed semi-industrial FDM printer with two independent extruders that QIDI Technology launched in 2021. It targets experienced users and small workshops that need large functional parts in engineering materials. Its headline feature is the dual extruder setup: a standard head plus a high-temperature head rated to 350 °C, paired with an actively heated chamber.
The build volume is 330x250x320 mm in dual-extruder mode (up to 360x250x320 mm with a single nozzle). It's built on a rigid all-metal Cartesian frame with a dual Z axis and linear guides on every axis, which keeps vibration down on large prints. The chamber heats to 60 °C and the bed to 120 °C, so ABS, nylon, polycarbonate, and carbon fiber composites run without warping. The second extruder is handy for soluble PVA supports on complex geometry and for two-color models. Print speed is 30-150 mm/s with 0.05-0.2 mm layers. You also get auto leveling, a filament runout sensor, power loss recovery, Wi-Fi, Ethernet, and USB, a 5-inch touchscreen, and QIDI's own slicer with Cura and Simplify3D support.
Advantages
- Dual extruders out of the box — a high-temp 350 °C nozzle and soluble PVA supports; in Top3DShop's tests the supports washed away cleanly in warm water and overhangs came out tidy
- Heated 60 °C chamber and 120 °C bed — ABS, polycarbonate, and nylon print without warping, and the enclosure holds heat well
- Rigid mechanics — an all-metal frame, solid-milled aluminum parts, and linear guides on every axis keep large prints stable
- Large build area — 330x250x320 mm lets you print big functional parts in one piece
- Ready to use out of the box — ships assembled, with interchangeable print heads and QIDI's own slicer (plus Cura and Simplify3D support)
- Responsive support — owners note that QIDI's warranty service ships replacement parts quickly
Disadvantages
- Fussy bed calibration — owners report the leveling drifts and the bed sags toward the center, so you often re-check the gap before each print
- Weak high-speed behavior — above 90 mm/s the printer starts to jolt, and the XY beam can pull geometry off when the chamber runs hot
- Slow warm-up and weak part cooling — the bed takes nearly 19 minutes to reach 100 °C, and model cooling isn't always enough for small features
- Minor design gripes — the extruder cable chain wears through over time, and the USB port sits awkwardly next to the door handle
The QIDI i-Fast suits experienced users, engineers, and small workshops that want an enclosed heated chamber and two extruders for large parts in ABS, nylon, polycarbonate, and composites. It's a workhorse for functional printing with soluble supports, not a fast machine for tiny minis.
Bottom line: the i-Fast delivers a lot of industrial-grade capability for the money, with a dual extruder, high-temp nozzle, and warm chamber in one enclosed body. Its strength is large engineering parts and soluble supports; its weak spots are fussy calibration and modest speed.