1. Reduce the significant tolerances of the core and cavity, and reduce the size that affects the alignment (component) of the Stool Mould. This can be very expensive, but high-quality mass production molds can (and should) be used to ensure that all products are as close to the ideal shape as possible and that the mold components are interchangeable.

　　2. After completing and testing, correct the Stool Mould: manually mix the mismatched areas by sanding the irregular ridges. This is often done, but it is not recommended, because in a multi-cavity mold, or in the case of using multiple same molds for the same product, each product in each cavity may be different.

　　3. Determine which side of the ridge has the least impact on the end-user or product performance, and then determine the dimensions of one side and the other so that in the worst case (all tolerances in the "wrong direction"), the work It is still acceptable for its intended use. In this case, the semicircular groove in the stripper is intentionally slightly smaller than the thickness of the rim. With all tolerances in the "ideal" direction, there will be the smallest ridge. In the case where all tolerances are added in the wrong direction, the step of the ridge will be the sum of the tolerances, but it is still acceptable. In the case of round containers, the affected size is the diameter of the cavity, core, and/or rim in the stripping ring.

　　Regardless of the Stool Mould of the parting line, a similar method is used to avoid any parting line mismatch: circle, ellipse, rectangle, irregular or eccentric.

　　The more difficult challenge is to foresee where the mismatch may occur and determine how to determine the size of the Children Toy mold.