Bondo Fiberglass Resin

[fischer550]

I am installing footholds soon.

Is the bondo fiberglass resin they sell at home depot good, or should I get something else?

 

[XJCrawler]

No, you need an epoxy resin

 

[snowxr]

It's good. GOOD FOR NOTHING!

 

[Quinc]

http://www.uscomposites.com/epoxy.html

 

[fischer550]

The bondo resin is not epoxy resin?

 

[XJCrawler]

No it's polyester resin

 

[fischer550]

which type of resin from US composites should I get?

 

[Quinc]

I would get this one: EPOX-150413 I found the medium to be way to slow in cold weather.

 

[fischer550]

I don't know whether to get the 635 thin or the 150 thick. According to the site, "
The 150 Resin System is NOT recommended for the layup/laminating of fiberglass, carbon fiber or Kevlar. It is too thick and will not properly saturate the cloth. **

 

[XJCrawler]

you want thin or west systems. Any epoxy resin can be thicked

 

[Yami-Rider]

Google search the forums is your friend.

 

[screaming440]

I use Bondo all the time never had a problem. have skis I repaired over 20 years ago with bondo fiberglass. still ride them never failed.

 

[WB1994]

What is your topdeck made out of?

 

[Yami-Rider]

I use Bondo all the time never had a problem. have skis I repaired over 20 years ago with bondo fiberglass. still ride them never failed.

Bondo fiberglass or bondo resin?

 

[fischer550]

Bondo resin. I think I'm gonna go with the west system stuff though

 

[Nate_D]

It's more about the bonding characteristics of polyester vs epoxy resin than Bondo vs another brand. My square is patched on the side of the bottom deck with bondo polyester resin. It's holding up fine. However, if any significant impact or stress was to be applied, it would delaminate before the same patch with epoxy would.

Surface prep is the most important thing here. Epoxy, polyester, vinylester... You can chisel it all off a poorly prepped surface with little effort.

I've never used the west system stuff, but many seem to like it. For general layup, I use the uscomposites thin epoxy.


Sent from my iPhone using Tapatalk

 

[screaming440]

Bondo fiberglass or bondo resin?

The bondo resin you buy at Wal-Mart or the parts store. Also use the green fiberglass "putty" filler for finish work. I know a lot of people on these boards claim you can't use it on SMC but I have been using it for years never had a problem. I put a fist size hole in the front of my 440 in 1993 and repaired it with bondo products. I am still riding that ski today. I also repaired major frontend damage to a friends 550 in 1991 with bondo products. he still has that ski too. no issues with it.

The truth is that that you are making an adhesion bond and you can make this stuff adhere to about anything if you do it right (example: I have used it to repair holes in aluminum fishing boats several times). So if you have a failure it is most likely because you did not prep the substrate properly. The key is the rougher the better. I usually use a 36-40 grit on everything that the glass will touch.

 

[Yami-Rider]

Im not saying it wont stick, but it is the incorrect way to fix smc... Save your self the headache down the road and just fix it right the first time...Epoxy ftw.