Choosing a compact plastic extrusion machine usually means balancing footprint, power needs, and the range of materials you actually want to run. The *Desktop SJ35 Single Screw Extruder Machine Mini Plastic Extrusion Machine* enters that decision as a used unit listed at USD 1,899.00, with a 0.8 kW motor and a bench-scale design. The real question is whether a lightly used desktop extruder can cover your small-batch work without taking over your workspace.
Quick verdict
The Desktop SJ35 is a compact single-screw extruder designed for small-scale jobs across filament, granules, sheet, film, profile, and pelletizing. A 110V input makes it easier to place in a typical workshop, and the unit is in very good condition after only about two hours of prior use. The main trade-off is a slow, controlled pace rather than high-volume output.
Who it suits
This machine suits hobbyists, small labs, and product developers who need one bench-level tool for several resins. Supported materials include PE, PP, PVC, ABS, XPS, WPC, polystyrene, PA, EVA, EPS, PET, PC, and blends such as HDPE/PP and PE/PP. Its 43 kg weight and 32 × 12 × 21-inch footprint keep it manageable for tight workspaces.
What stands out
The extruder uses a 35mm screw with a 13:1 L/D ratio and 38CrMoALA screw material. The 0.8 kW power rating and 15 rpm screw speed align with controlled, small-batch processing. Extra parts are included, which adds practical value for someone starting out.
Meaningful trade-offs
The used condition is the main factor to weigh: only two hours of prior use is encouraging, but pre-owned units still call for careful inspection. The 15 rpm screw speed means you should not expect fast cycle times. The single-screw 35mm configuration is best treated as a prototyping or pilot-scale tool rather than a production workhorse.
Desktop SJ35 Single Screw Extruder Machine Mini Plastic Extrusion Machine
The 35mm screw and 110V input make this a realistic single-machine choice for small shops experimenting with multiple resins. The used condition and 15 rpm screw speed, though, point to a tool that rewards patience over pressure.
Bottom line
If your projects center on small batches of PE, PP, PVC, ABS, PET, PC, or PLA, the Desktop SJ35 at USD 1,899.00 is a credible bench-level option-provided you accept a used unit and modest speed. It is not a replacement for industrial extruders, but it can be a useful starting point for compact plastic processing.
