Mold from ABS plastic part

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Mold from ABS plastic part

Author	Message
Dan22h	Dan22h posted 8 Years Ago HOT Topic Details
Group: Forum Members Posts: 15, Visits: 197	I have an abs plastic wheel arch liner for my car that I would like to take a mold from. I've read online that styrene based resins react with the ABS, is there any way around this such as suitable release agents? The part is not visible so surface finish isn't an issue.
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Hanaldo	Hanaldo posted 8 Years Ago HOT Post Details
Group: Forum Members Posts: 2.5K, Visits: 28K	PVA release agent mate. Or packing tape.
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Fasta	Fasta posted 8 Years Ago HOT Post Details
Group: Forum Members Posts: 468, Visits: 3.5K	Are you sure it's ABS ? The majority of modern plastic car bumper system fascias are made of thermoplastic olefins (TPOs), polycarbonates, polyesters, polypropylene, polyurethanes, polyamides, or blends of these with, for instance, glass fibers, for strength and structural rigidity. Fastacraft Facebook page
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Dan22h	Dan22h posted 8 Years Ago HOT Post Details
Group: Forum Members Posts: 15, Visits: 197	It's an inner wheel arch liner for a lotus exige, there's a paper sticker on the back with recycling logo ♻ >ABS< Looks like this Edited 8 Years Ago by Dan22h
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Fasta	Fasta posted 8 Years Ago HOT Post Details
Group: Forum Members Posts: 468, Visits: 3.5K	Do your own small test on the back of the part. Some wax, some PVA and just a tiny bit of your preferred tooling gelcoat to see if it reacts. Fastacraft Facebook page
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Dan22h	Dan22h posted 8 Years Ago HOT Post Details
Group: Forum Members Posts: 15, Visits: 197	OK, thanks for the replies.
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FLD	FLD posted 8 Years Ago HOT Post Details
Group: Forum Members Posts: 468, Visits: 2.7K	They are abs. I'd go with the pva. Dust a light coat on with a spay gun and let it dry. Keep applying dust coats until you have an even blue coat then put down a few full film coats letting it dry between each coat. I then do a single coat of wax and grp just falls off!
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