Carbon Infusion of silmar surboard resin with a in mold coat of clear poly gel coat. Print through...


Carbon Infusion of silmar surboard resin with a in mold coat of clear poly gel coat. Print through...
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osbsurn383
osbsurn383
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Hey first post here.

Been doing lots of reading and test trying to find a good way to infuse carbon fiber with surfboard resin.

I have a waxed piece of glass where i spray clear uv marine gel coat and let cure in a heated box till barely tacky.
Then lay one layer carbon and 2 layers of fiberglass cloth. Then peel-ply and then mesh.
My bag on this one could have been better and a slow leak and left the vac on longer than i would like cause the lay up to be a bit dry.



Had nice bubble free and pinhole free infusion though.
You can see if you look at the highlight the texture print through  of the carbon or glass behind it.



Tried a second test with half gel coated and half not.
This time i wrapped the vacuum spiral hose side in the 3 layers of peel ply to act as a flow restriction to keep the part more resin rich this time.
Worked perfectly in that regard.

No Gel coat side i can physically see the carbon print through with almost bare fibers.
Gel coat side is better with  no complete print through but i guess from the cure/shrinkage of the surfboard it prints through on the gel?
Sorry no picture here.

Not sure if my term usage is correct has far as print through is concerned please correct me if so.

I was looking at possibly changing to epoxy to see if i get better results.
Was hoping to stay with these products since it is a good bit cheaper.

I am looking at possibly using Duratec® Sunshield Clear Topcoat  as my in mold gel coat with either surfboard or epoxy.

Id love to be able to get some gc50 as my in mold gel coat but i dont believe that is sold in the us yet?
Edited 9 Years Ago by osbsurn383
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Hanaldo
Hanaldo
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Couple of things here:

1. Lose the breather. You don't need it, the mesh won't puncture your bag if you're using decent bag. The breather will just waste resin. If you're really worried about it, cover the mesh edges with peel ply or flash tape. 

2. The feed spiral goes on top of the flow mesh. I suspect that this may have been your issue. 

I always use perforated release film in my infusions and it isn't a problem providing you get the right perforation spacing (which yours appears to be). So I doubt that's what went wrong. 
GO

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