Used stool mold

When sourcing a used stool mold, you must verify the mold steel grade (e.g., P20, 718, or S136) as this determines the mold's remaining life and surface finish quality. Check the cavity number (single vs. multi-cavity) to ensure it matches your injection molding machine's capacity. Additionally, inspect the cooling system for blockages or scale buildup, and confirm the ejection mechanism (hydraulic or mechanical) is fully functional to prevent production downtime.

Request the shot count record from the supplier to understand how many cycles the mold has already completed. A high-quality steel mold typically lasts for 300,000 to 500,000 shots. Examine the parting line for signs of wear or 'flash' issues, and look for welding repairs on the cavity surface, which may indicate previous damage and potential weak points in future production.

Ensure the mold dimensions (length, width, and height) fit within the tie-bar spacing of your machine. You must also verify that the clamping force required for the stool mold does not exceed your machine's tonnage. Check the locating ring diameter and sprue bush radius to ensure a seamless connection with your machine's nozzle, preventing material leakage during the injection process.

Even for used equipment, the mold should ideally have been manufactured under ISO 9001 standards. Ensure the resulting stool product can meet regional safety regulations, such as EN 12520 for furniture strength and stability. If the stool is intended for children, the mold design must allow for smooth edges and no small detachable parts to comply with ASTM or CE toy safety standards.

Always request a mold trial video (T1 or T2 test) showing the mold running in a machine and producing a complete stool. For high-value transactions, hire a third-party inspection agency (like SGS or Intertek) to perform an on-site audit in China to check for rust, cracks, or improper storage. Using Made-in-China.com's secured payment services can also provide a layer of protection until the shipping documents are verified.

Negotiate for the inclusion of spare parts, such as extra ejector pins, springs, and O-rings, which are prone to wear. Discuss the refurbishment service—ask the supplier to polish the cavity and clear the water channels before shipping. Aim for a price reduction of 40-60% compared to a new mold, depending on the condition and brand of the original mold base.

Used molds are heavy and require seaworthy wooden box packaging with moisture-proof lining and anti-rust oil application to prevent corrosion during sea transit. Ensure the supplier provides the correct HS Code (typically 848071) for plastic injection molds. Be aware that some countries have specific import restrictions or additional inspections for 'used' industrial goods; verify your local customs policy to avoid unexpected tariffs or seizures.

Prioritize suppliers on Made-in-China.com who have Audited Supplier status. Use Proforma Invoices (PI) that clearly state the mold's condition, weight, and trial results. Avoid direct wire transfers to private accounts; instead, use official corporate accounts or the platform's secure escrow-like systems to ensure your funds are protected until the supplier fulfills their contractual obligations.