Bondo Questions

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Well, if its twice as hard that means its going to be VERY hard to sand. Normal bondo is hard to sand as it is. On the other hand it will be a little more durable. The only difference between the two is that Bondo Glass has shards of fiberglass in it and normal Bondo does not. As long as you have a power sander i say go for it.
 
bondo glass is bondo with strings of fiberglass in it. I would NOT reccommend it for detailing, it may be a bit tougher but it is way harder to sand and detail, I reccomend straight bondo or rondo (< my preference)

If you have any questions regarding rondo, there are some helpful threads and I would also be willing to help you.

And make a WIP thread and ask your question there, that way everything you need to know is right there together, get some progress pics for us :p
 
For exterior work you will definitely want to go with gold grade bondo. If you are wanting to rondo the inside of your part to strengthen it, bondo hair is fine, it will be stronger than regular bondo. The gold grade goes on smoother and sands easier. Just remember on the outside to do very thin layers and to minimize. Sand between layers for maximum results.
 
Rondo - Bondo and Resin . You mix a certain amount of Bondo and Fiberglass Resin together. Make sure to add the Bondo Hardner before mixing.
 
For exterior work you will definitely want to go with gold grade bondo. If you are wanting to rondo the inside of your part to strengthen it, bondo hair is fine, it will be stronger than regular bondo. The gold grade goes on smoother and sands easier. Just remember on the outside to do very thin layers and to minimize. Sand between layers for maximum results.

I'll have to try the gold. Is it just as strong as regular bondo? And how does it compare with Bondo Ultimate body filler?
 
Bondo glass is best used as a reenforcer. I used it on my Moz mk v on some parts of the inside of his torso and it is very solid. Like they said, its VERY hard to sand and even takes a bit to cut through with the dremmel cutter. If you go with Rondo for hardening pieces, I think most of us use a 75% bondo and 25% resin mixture to make the bondo nice and runny so you can either slush cast it in a helmet or even paint it on the inside of your pieces to harden them. Hope it helps
 
I also have a question about bondo. Figured it would be better to ask on this thread then to start a new one.
So my question is... What's the best way to apply bondo?
 
What's the best way to apply bondo?

You should be able to find 3M/Bondo brand rubber squegees to mix and apply Bondo near where you find the filler itself on the shelf. However, any kind of sturdy, flexible item can be used, like old credit card or spatulas....things like that.

I'm still learning, but I scoop up a little on my tool, and simply spread it around until it gets where I need it, and is the thickness I want it to be. Apparently, lots of thin layers is better than piling it on in one go, so I hear. Like I said, I'm still learning how to use the stuff properly myself.
 
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