Production injection molds are built to withstand higher volumes of plastic injection molding cycles. They are made with P20 steel ，718H, 2738 or NK80 stainless steel, and typically last over 100,000 cycles. Moreover, we provide a lifetime warranty on production molds. As long as we continue to make your parts in our facility, we will maintain and repair the tool as needed at our cost.
Yes, making design changes on production molds is possible with Zetar. An Zetar's engineers will coordinate with you on CAD file changes and rework the mold accordingly. You will receive revised samples for your approval prior to production.
Most of the time for plastic injection molding is spent on creating the production mold itself. During the actual production run, a set of parts can be created within several seconds. For a 3D printer to make one part, it can take anywhere from 20 minutes (a very small simple design like a washer or nut) to over several hours (more complex or larger pieces). This means producing large quantities of parts won’t have a noticeable effect on the total time need for plastic injection molding. On the other hand, adding more parts to an order can add days, weeks, or even months for a 3D printer to fulfill the order.
Higher quality products
The most common 3D printers are Fused Deposition Modeling (FDM) machines. This means the printer creates a part by repeatedly heating up a drop of plastic and adding it to the part one drop at a time. Each layer is allowed to completely cool before the next layer is added. This layering can introduce new structural weak points as the layers can sometimes be prone to separation. For Plastic injection molding, the production mold is completely filled with molten plastic and then allowed to cool. Since the part comes out as one piece, plastic injection molding doesn’t introduce any new structural weakness.