Post by 1moreprototype on Apr 7, 2022 9:57:50 GMT -5
Hello,
Has anyone ever tried to pull silicone with a high viscosity (35,000 cps) through a cavity mould using a vacuum?
I am trying to fully encapsulate a iron core with silicone in a mould that has a 3mm gap between mould and core. I need to use a high viscosity silicone as the finished product requires a Shore Hardness of 50A, soft touch and skin safe. (The prototype in question is a exercise weight.) I have tried previously degassing and syringe injecting - which left air bubbles and gravity pouring the silicone in a vacuum casting machine. However as the viscosity is high, it does not flow around the core quick enough for the workable pot life.
Does anyone know if by pulling the silicone through the mould using a vacuum (as you would in resin infusion) would work? And has anyone experienced pulling a high viscosity silicone through a mould.
Thank you.
Has anyone ever tried to pull silicone with a high viscosity (35,000 cps) through a cavity mould using a vacuum?
I am trying to fully encapsulate a iron core with silicone in a mould that has a 3mm gap between mould and core. I need to use a high viscosity silicone as the finished product requires a Shore Hardness of 50A, soft touch and skin safe. (The prototype in question is a exercise weight.) I have tried previously degassing and syringe injecting - which left air bubbles and gravity pouring the silicone in a vacuum casting machine. However as the viscosity is high, it does not flow around the core quick enough for the workable pot life.
Does anyone know if by pulling the silicone through the mould using a vacuum (as you would in resin infusion) would work? And has anyone experienced pulling a high viscosity silicone through a mould.
Thank you.
