Any suggestions how to improve the quality of finished (polymer) parts via small-scale injection molding using 3d-printed molds?

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Junji Hou

Using high mold temperature.

John Ryan Cortez Dizon

Hello Junji Hou,

Thanks for your answer.

But how high is high enough?

(In relation to the melting point of the injected plastic material).

It is related to the resin you used. In case of PP, 120℃ or up to 140℃ is OK.The mold temperature should be set to make the polymer soften so that the packing stage can make the polymer melt fit the mold, rather than the polymer melt freeze at the mold wall using low mold temperature.