โDec-10-2009 06:16 PM
โSep-12-2010 08:44 AM
โSep-12-2010 08:44 AM
โSep-12-2010 06:17 AM
skimask wrote:OK The cure time on this polyester resin is 2 hrs and and it kinda sets up in about 12 to 15 mins and I think you can make this longer by using 10 drops of hardener instead of 12 drops, Again I just dont know.????oldtrucker63 wrote:
OK help here you say Fiberglass/bondo....??? There will not be any bondo used on this,?? The resin is polyester resin and sets up quick but I will be doing small areas at a time and from what I read this stuff will not crack and will stick to just about anythig, But its just fiberglass and matt Not any Bondo, Bondo is for dent repair on cars.?? Is this right...I Just dont know..???
I'm not 100% myself. In fact, I think I might've been confusing myself a bit. First thing I saw in that picture were the big words "BONDO", and that says to me 'old school car fixing' type stuff.
One thing I do know is that the faster the epoxy stuff sets up, the more brittle it is. The more prone to cracks it is because it is so brittle.
Back in the day when I used to build and fly R/C planes a lot, I'd almost never use the 5 or even 30 minute epoxy mixes. I'd always use the 2 hour epoxy types, especially where strength and a bit of flex were needed. I could tell in the finished product, even though it took forever to fully cure (a day or more at room temp), the 2 hour stuff had a LOT more give to it before it would think about cracking up. The 5 minute stuff was just too brittle to use anywhere for me.
Heck, might want to stop down to the local boat shop and ask around there. Boats=fiberglass, Boat shops=guys that know fiberglass repairs...with any luck...
JDG
โSep-11-2010 09:31 PM
oldtrucker63 wrote:
OK help here you say Fiberglass/bondo....??? There will not be any bondo used on this,?? The resin is polyester resin and sets up quick but I will be doing small areas at a time and from what I read this stuff will not crack and will stick to just about anythig, But its just fiberglass and matt Not any Bondo, Bondo is for dent repair on cars.?? Is this right...I Just dont know..???
โSep-11-2010 07:10 PM
โSep-11-2010 06:40 PM
skimask wrote:OK help here you say Fiberglass/bondo....??? There will not be any bondo used on this,?? The resin is polyester resin and sets up quick but I will be doing small areas at a time and from what I read this stuff will not crack and will stick to just about anythig, But its just fiberglass and matt Not any Bondo, Bondo is for dent repair on cars.?? Is this right...I Just dont know..???
I'm curious as to why you want to use fiberglass/bondo to do the re-work of the overhead?
From what I remember, fiberglass/bondo gets really hard after it cures. I'm thinking that in an RV application, that stuff won't flex nearly enough and it'll end up cracking up on the first outing, especially up high and on the corners like you're planning on doing. Maybe somebody makes a "flex agent" that you can add to it like they do with plastic bumper paint, keeps it from cracking up.
JDG
โSep-11-2010 06:33 PM
โSep-11-2010 06:28 PM
โSep-11-2010 05:19 PM
โSep-11-2010 04:07 PM
โSep-11-2010 02:48 PM
โSep-11-2010 12:25 PM
โSep-11-2010 09:49 AM
โSep-10-2010 09:21 PM
โSep-10-2010 06:56 PM