The smaller parts and features get, the less errors can be tolerated in a mold. If we analyze the types of projects that MTD rescued from production failure, many times it was the lack of precision in the mold that doomed the project from the beginning. With tool inserts moving together like tiny, complex jigsaw puzzle pieces with ultra-precise sequencing, construction accuracy of these pieces is crucial. There is essentially no room for error in micro tooling, but with certain materials, those rules become stricter when tight tolerances are required. As tolerances become smaller, so does the allowable margin of error for steel accuracy. At MTD, our workpiece accuracy target is 0.000042″ (about 1μ).Īchievable features and tolerances in plastic depend on steel accuracy and material. Workpiece accuracy refers to what the actual part looks like coming out of the machine, and not what the machine is specified to do.

Mitsubishi MX600 oil wire EDM machine lets machining operators use ultra-small wire down to.

Sarix 3D EDM milling machine creates cavity geometry with an end mill electrode that can be as small as 5μ.

For example, MTD Micro Molding invested in (and customized) equipment for very specialized work: The mold is the enabler for manufacturing success, and precise execution is achieved by utilizing state-of-the-art equipment and applying unconventional tooling methods.Īdvancements in high-precision mold making and molding technology allow for more possibilities when miniaturizing medical device components.

By understanding the tolerances of both micro tooling and micro injection molding, it’s possible to achieve a high level of repeatability and part accuracy for even the most advanced micro medical devices. Manufacturing precise miniature plastic parts is the result of exact tooling execution.

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