ScaleME

My Feedback: (3)

I have a mold for a cowl in two parts (top and bottom). The top and bottom will not be joined, rather this is how the cowl will be separated on the model (for engine access). The molds are foam and covered with Ultracoat. I want to lay fiberglass over the Ultracoat to form the cowl pieces.

Question: There are some compound curves on the bottom piece around the air intake so I was planning on using .75 cloth and then heavier cloth with a finish layer of .75 cloth. Not sure if this is the right way to go, so - How much of what thickness of cloth should I use. The plugs are roughly 16 inches long by 6 inches tall.

Thanks

ScaleMe

FLYBOY

My Feedback: (11)

I have done a little of that, but not a ton. What I did on my last one is I did the compound curves first with layers of light cloth like you are talking, then the reast of the cowel. It works, but I don't know if it is the best way. If you can do the layup in pieces that will allow you to make the compound curves, you will be fine.

I am assuming the mold is a male mold and the part you put on it will pull off and the outside will be the outside of the piece, not the reverse where the outside of the piece is against the mold. If it is a female mold, use cabosil in the epoxy to thicken it and fill the compound curves so the glass doesn't have to bend so much.