Infusion with foam core

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#1

Hi all,

I’m looking to infuse the following layup from top to bottom:

FG
Foam
FG
Mold

Is there any way I can infuse the whole lot and still have a great finish on the top layer?

The shape im infusing isnt that complicated, but using a rigid mold isnt really a option.

Will those silicone reusable bags result in a better surface? And even if I used a reusable bag, id still need to use peel ply and flow materials right?

Is my only option a 3 step process? Each layer seperately the bond the whole lot together?

Thanks in advance for your advice.

#2

If you use a deilles foam core it in no problem. You have to use a flow media and I would also reccomend peelply and perforated release film for infusion or compoflex as alternative.
Silcone bags will not work with epoxy. I do not like them.

#3

https://www.youtube.com/watch?v=54N_ZTrPJKI

that video may help you

#4

The mold side is where you get the good finish,the flow media and other consumables is on the bag side with perforated core.
You need a mold side that will hold a vac ,no leaks.You can line this with basic plastic sheeting so no waxing is needed,watch out for printing on the plastic.

#5

That is not helpful. The panels will not be perfekt. A film on both sides will never end in a smooth side. There is also no brake zone and the system does not look tight.

#6

Im thinking about some kind of semi rigid plastic surface above the top layer of glass.

Should at least help to reduce finishing

#7

If its not that big and not a lot of glass then u could just do a hand layup then instead of peel ply use a .030 thick sheet of mylar.this will make a nice flat shinny finish both sides.

One step further wrap some breather around,bag it and apply just a little vac.Can’t remember but acrylic mylar I think it is sticks to epoxy,pvc wont.I think.