---
title: Inject!
slug: inject
step: 4
howto: el-tornillo-motor-injection-machine
tags: ["HDPE","melting","injection","PS","LDPE","PP"]
category: Machines
difficulty: Hard
time: 3-4 weeks
location: Bogota, Colombia
---
# Step 4: Inject!
How to Use the Machine

1. Activate the machine and fill the barrel with plastic.
2. For the initial injection, wait 25 minutes from the time the machine is activated and filled.
3. Position the mold over the jack surface and firmly press it against the nozzle.
4. Activate the motor to lower the piston, pushing the molten plastic into the mold until the belt slips on the pulley.
5. Deactivate the motor and maintain piston pressure for approximately 5 seconds.
6. Then, reverse the motor to move the piston upward.
7. For continuous injections, refill the barrel before detaching the mold from the nozzle.
8. Remove the mold by lowering the jack.
9. Open the mold and extract the injected part.
10. Close the mold and repeat the process starting from step 3.

Recommendations

You will require molds with a conical nozzle connection or an adapter to fit your mold nozzle. The machine generates significant pressure, allowing for the injection of products with very thin walls.
![WhatsApp Image 2023-04-14 at 9.05.51 AM-1879f335ab6.jpeg](/resources/howtos/el-tornillo-motor-injection-machine/whatsapp_image_2023-04-14_at_9.05.51_am-1879f335ab6.jpeg)