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Post by 40angst on Dec 29, 2016 12:24:25 GMT -5
I have a project where I have some pieces of powdercoated metal and I want to coat/dip the ends of them with a rubbery product. I was hoping that Alumisol might work, or if you have suggestions I'm listening!!! I have read the datasheets but can't find the open time for the Alumisol - need to calculate how much to use at one time so I know how many metal pieces I can dip. Or, instead of dipping, should I create a form and pour the alumisol over the metal? Will the final product be tacky? I realize that the formula won't actually adhere to the powdercoat itself. The end product needs to be kind of soft to touch and not as stiff as a pencil eraser, but no more soft than say a gummy bear (sorry can't thing of adequate rubber things!). It will also need to be fairly durable and withstand friction (the metal piece will be in contact with leather and stiff fabrics and the rubber ends are for stability and protection) We're making a prototype therapy item that may attach to children's shoes. It will have slots in the metal to attach straps - see the attached snapshot. We just want to coat the large end and a short way up the neck. We may design a different end piece with larger slots, this is just our first go-round.
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Post by mike on Dec 29, 2016 22:14:22 GMT -5
I think the best and most durable product would be a plasti-dip type material similar to what they do on handles for tools. Our materials would work however they won't adhere very well and am afraid it would peel with repeated friction. The problem with most plasti dip type materials is that they are typically much harder than what you are described you are looking for.
Flex 40 or Flex 60 would be what I would try if I were going to a 2 part urethane. Open time is approx. 5 minutes. Demold time is approx. 1 hour in a thin section. Low heat will help it cure and be less tacky sooner (100-130F is all it takes). It will stick to metal and other substrates however it won't give you that full chemical bond. The holes in it will help it hold mechanically so it may do the trick. Scuffing the master with 60 grit or something coarse would help adhesion as well.
Mike
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