Make a fiberglass fan shroud
(→General Comments on Fiberglassing) |
(→General Comments on Fiberglassing) |
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A body part would need a couple layers of 2oz mat, a layer of 1.5oz plain weave cloth and possibly a third layer of mat, depending on size. Again reinforce edges as required with a strip of mat. | A body part would need a couple layers of 2oz mat, a layer of 1.5oz plain weave cloth and possibly a third layer of mat, depending on size. Again reinforce edges as required with a strip of mat. | ||
| − | I made a shell for the headliner of my '53 Chevy pickup and used only 2 layers of mat (about 3/32" thick) for light weight and flexibility. It is more than strong enough. See it here [http://www.hotrodders.com/forum/journal.php?action=view&journalid=2439&page=25&perpage=5&reverse=]. This is also an example of a part made from a | + | I made a shell for the headliner of my '53 Chevy pickup and used only 2 layers of mat (about 3/32" thick) for light weight and flexibility. It is more than strong enough. See it here [http://www.hotrodders.com/forum/journal.php?action=view&journalid=2439&page=25&perpage=5&reverse=]. This is also an example of a part made from a finished mold (the painted roof of the truck), but without the gel coat since it is coverd with upholstry and doesn't need a paitable finish. |
A comment on using polyester resin - you can adjust it's hardening time somewhat with the amount of MEKP hardener you add. The more hardener, the faster it sets. You can add too little hardener and it will never set. It isn't that scary, there is a pretty wide range of hardener concentration that works fine. If you have a piece that isn't setting due to cold weather or short hardener you can set the piece in direct sunlight. UV radiation will set off this resin seem like no matter how much hardener is used. Be careful with this though, the resin setting chemistry gives off a lot of heat and too thick a part, too much hardener and/or solar acceleration can get the thing smoking and even start a fire! Closest I came to that was mixing several batches of resin in a row in a tin can and just starting the next batch on top of a gelling existing one. Got to about half a inch thick and it started bubbling, smoking and WAY too hot to touch the can. | A comment on using polyester resin - you can adjust it's hardening time somewhat with the amount of MEKP hardener you add. The more hardener, the faster it sets. You can add too little hardener and it will never set. It isn't that scary, there is a pretty wide range of hardener concentration that works fine. If you have a piece that isn't setting due to cold weather or short hardener you can set the piece in direct sunlight. UV radiation will set off this resin seem like no matter how much hardener is used. Be careful with this though, the resin setting chemistry gives off a lot of heat and too thick a part, too much hardener and/or solar acceleration can get the thing smoking and even start a fire! Closest I came to that was mixing several batches of resin in a row in a tin can and just starting the next batch on top of a gelling existing one. Got to about half a inch thick and it started bubbling, smoking and WAY too hot to touch the can. | ||
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