Inspect for scoring, abrasion, or excessive clearance. Worn components cause inconsistent shot volumes and poor melt quality.

Never buy a machine based on photos alone. Use this checklist during a physical inspection:

Before searching, define your requirements to avoid costly mistakes like oversizing, which can waste .

A well-documented history is often more important than the machine's age. Used Injection Molding Machine Buying Guide - Meadoworks

This is the pressure required to keep the mold closed during injection. A common rule is to add a 10–20% safety margin to your calculated minimum to prevent "flash" (excess plastic).

Ensure the tie-bar spacing and platen size can physically accommodate your molds. Check the ejector stroke and pattern to ensure parts can be removed without damage. Drive Type:

Check for leaks around pumps and valves. Listen for unusual whining or knocking sounds from the pump, which often indicates wear.