Make a fiberglass fan shroud
(→Finishing the part) |
(→Finishing the part) |
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--[[User:Willys36|Willys36]] 10:47, 5 September 2009 (MDT) | --[[User:Willys36|Willys36]] 10:47, 5 September 2009 (MDT) | ||
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| + | == '''General Comments on Fiberglassing''' == | ||
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You may wonder how many layers of mat to use; what kind of mat or cloth to use, etc. There isn't a single answer for all parts. The shroud shown in this excellent how-to is mainly for form and has little strength requiremants so can be laid up with just the chopped strand mat. However if it were a body part or some other psrt that would see some stress, the design should include one or more layers of woven cloth which is many times stronger than the mat. | You may wonder how many layers of mat to use; what kind of mat or cloth to use, etc. There isn't a single answer for all parts. The shroud shown in this excellent how-to is mainly for form and has little strength requiremants so can be laid up with just the chopped strand mat. However if it were a body part or some other psrt that would see some stress, the design should include one or more layers of woven cloth which is many times stronger than the mat. | ||
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'''Gel coat''' - this is resin filled with a high solids usually colored pigment. It can either serve as a primered surface to be sanded and painted or as in the case of boats, can be the final colored finish. It is sprayed in a polished female mold without reinforcement, then 'glas is laminated on it. It is much softer than plain resin and works like a sanding primer. Good stuff. | '''Gel coat''' - this is resin filled with a high solids usually colored pigment. It can either serve as a primered surface to be sanded and painted or as in the case of boats, can be the final colored finish. It is sprayed in a polished female mold without reinforcement, then 'glas is laminated on it. It is much softer than plain resin and works like a sanding primer. Good stuff. | ||
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'''Epoxy''' - much stronger than polyester but more persnikety (I think that's a word!) and expensive. Also check with the supplier for compatibility 'cause some cloths won't work with some resins. I would only use this for looks if making a carbon fiber part. | '''Epoxy''' - much stronger than polyester but more persnikety (I think that's a word!) and expensive. Also check with the supplier for compatibility 'cause some cloths won't work with some resins. I would only use this for looks if making a carbon fiber part. | ||
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