Precision custom plastic injection molding, insert molding, part decoration, and 24/7 assembly in Poteau, Oklahoma.https://polydynellc.com/en-UShttps://polydynellc.com/insights/shrinkage-and-the-print/https://polydynellc.com/insights/shrinkage-and-the-print/Every moulded part shrinks as it cools. The mould is cut oversize to compensate, which is why the resin has to be chosen before the tool is cut, not after.Tue, 14 Jul 2026 12:00:00 GMTToolinghttps://polydynellc.com/insights/wall-thickness-and-cycle-time/https://polydynellc.com/insights/wall-thickness-and-cycle-time/Cooling is most of the cycle, and cooling time rises with the square of the wall. Taking a wall from 4 mm to 3 mm can take a quarter off the price of the part.Tue, 02 Jun 2026 12:00:00 GMTPart designhttps://polydynellc.com/insights/drying-hygroscopic-resins/https://polydynellc.com/insights/drying-hygroscopic-resins/Nylon, polycarbonate, PBT, and PET absorb water from the air. Moulded wet, they do not just cosmetically splay — the polymer chain is cut, and the strength does not come back.Tue, 21 Apr 2026 12:00:00 GMTProcesshttps://polydynellc.com/insights/draft-angle/https://polydynellc.com/insights/draft-angle/Draft is the taper that lets a part leave the mould. Leave it off to hold a dimension and you trade it for drag marks, longer cycles, and a tool that wears.Mon, 09 Mar 2026 12:00:00 GMTPart designhttps://polydynellc.com/insights/gate-position-and-weld-lines/https://polydynellc.com/insights/gate-position-and-weld-lines/Wherever two flow fronts meet, the part has a seam that is weaker than the material around it. Gate position is what decides where those seams fall.Tue, 27 Jan 2026 12:00:00 GMTToolinghttps://polydynellc.com/insights/tolerances-worth-paying-for/https://polydynellc.com/insights/tolerances-worth-paying-for/A tight tolerance on a moulded feature is not free — it buys tool work, slower cycles, and more inspection. Spend it where the part actually has to fit.Tue, 18 Nov 2025 12:00:00 GMTQuality