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Taxidermy.Net Forum | Taxidermy Discussion Categories | Molding and Casting | Topic: Casting fish fins with resin

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Topic: Casting fish fins with resin (Read 899 times)

kstenzel
Bronze Member

Location: Northern Illinois
Posts: 171

A Couple Florida Bass

Casting fish fins with resin

« on: November 20, 2009, 11:09:34 PM »

Has anyone casting fins with resin ever used anything to attempt to soften the cured fins and perhaps make them more flexible? Have been having some issues lately with hard brittle fins cracking & breaking and just wondering if any additive exists that would help.


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Jknuth
Platinum Member

Location: Oshkosh Wisconsin
Posts: 4838

I am LORD OF THE DANCE!

Re: Casting fish fins with resin

« Reply #1 on: November 21, 2009, 01:42:11 AM »

Quote from: kstenzel on November 20, 2009, 11:09:34 PM

From what I understand you can use acetone to thin it a bit and make it flexible. I really havent tried it yet.
Try calling the tech people at Us-composites and see what they have or suggest.


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Dondi
Gold Member

Location: Mentor on the lake , Oh.
Posts: 741

Re: Casting fish fins with resin

« Reply #2 on: November 21, 2009, 07:16:47 AM »

Quote from: kstenzel on November 20, 2009, 11:09:34 PM

Fin Magic or IE 3025 will give you firm fins with some flex.


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Don Patton
Mentor on the lake, Ohio
dondi10@roadrunner.com

kstenzel
Bronze Member

Location: Northern Illinois
Posts: 171

A Couple Florida Bass

Re: Casting fish fins with resin

« Reply #3 on: November 21, 2009, 07:58:57 PM »

Thanks Josh, I think I will try that Monday and see if they have any suggestions. Actually it was your blank that gave me the idea because your fins seem more flexible than the ones I have been producing lately.


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Jknuth
Platinum Member

Location: Oshkosh Wisconsin
Posts: 4838

I am LORD OF THE DANCE!

Re: Casting fish fins with resin

« Reply #4 on: November 21, 2009, 08:57:28 PM »

Quote from: kstenzel on November 21, 2009, 07:58:57 PM

Let me know what they tell you, I keep forgetting to check with them until its around 2:00 am then forget in the morning.
lol
As far as my blank I am just using bondo brand polyester resin.
Your fins seem fine to me, what brand are you using.


« Last Edit: November 21, 2009, 10:01:32 PM by Jknuth »	Report to moderator Logged

kstenzel
Bronze Member

Location: Northern Illinois
Posts: 171

A Couple Florida Bass

Re: Casting fish fins with resin

« Reply #5 on: November 23, 2009, 01:43:15 PM »

Think I may have answered my own question. US Composites wasn't of much help, but I called Eager Polymers & they had several suggestions. First was a Liquid Plasticizing Agent EP9009 that sounds like it might do what I am looking for although eventually (perhaps years down the road) it will become hard & brittle again. Their second suggestion was adding Fiberglass Flock, a finely ground glass (1/32") that can be used like Cab-o-sil only it will add strength. Think I will try both of these & see how they work