Quick verdict
Choosing between two desktop pneumatic plastic injection molding machines is a bench-space decision first and a price decision second. The Intbuying 110V lab vertical unit and the 20g mini desktop injector are both compact vertical designs for small plastic parts, but they split on control depth and air-supply demands.
The Intbuying machine is the higher-listed-price, more fully specified lab unit, while the 20g mini injector is the lower-listed-price bench addition for small samples. Neither machine is a generic catch-all; each description lists different strengths.
Side-by-side snapshot
| Machine | Listed price (USD) | Price bar |
|---|---|---|
| 110V Lab Desktop Vertical Pneumatic Plastic Injection Molding Machine 1KW | USD 1,821.60 | |
| 20g Mini Desktop Vertical Injection Molding Machine Pneumatic Plastic Injector | USD 759.99 |
Both are new vertical desktop injection molding machines with pneumatic operation, so the practical choice comes down to how much control and power you want and how much you want to spend.
Where each machine wins
- Intbuying 110V wins for control depth. Its description points to temperature and pressure control, precision filling, and pneumatic driving.
- 20g Mini wins for small-sample work. Its description lists a theoretical 0-15g per-shot maximum and a 0-350°C heating range, and it names PP, PE, ABS, PS, PA, PET, TPU, and PVC as usable options.
Product notes
110V Lab Desktop Vertical Pneumatic Plastic Injection Molding Machine 1KW
The Intbuying unit earns its place on a lab bench with control depth rather than portability. Its description emphasizes adjustable temperature and pressure control, precise filling, and pneumatic driving, and it is positioned for ABS, PP, PE, PVC, and PA. The 1KW power figure in the title is a concrete supply-side detail, and the vertical desktop format keeps it on a table instead of a factory floor. At the higher end of the price spread, this is the more expensive choice, so it fits best when you want the material list and the pressure/temperature control loop in one package. The main restraint is cost: the 20g injector carries a much lighter listed price, so buyers who only need occasional samples may not use the extra capability.
20g Mini Desktop Vertical Injection Molding Machine Pneumatic Plastic Injector
The 20g mini desktop injector is the lower-priced bench option, and it is aimed at soft plastics like PP, PE, ABS, with PS, PA, PET, TPU, and PVC also listed. The description gives a theoretical maximum injection amount of 0-15g per shot and a heating temperature range from 0-350°C, which tells you this is a small-sample machine rather than a production unit. Its hand-disassembled mold design is described as reusable across different molds, so you can swap molds for multiple uses. The catch is the air supply: it requires an external air pump of 30L 500W or higher, with air pressure between 0.65-0.85. If your bench does not already have that pump, that hardware is an additional piece of the setup. For small sample runs and low-volume experiments, this machine keeps the entry price down.
Final choice by use case
If your work centers on lab-controlled molding, the Intbuying 110V Lab Injection Molding Machine is the unit to start with. If your work is small-sample molding and you have compressed air available, the 20g Mini Pneumatic Injector is the lower-listed-price route.
