bondo

[gary jackson]

so will regular two part bondo stick to sanded styrene

[ctruss53]

Yes. It actually works very well.

But it is very stinky. So be prepared for that if you use it in your home.

[redscampi]

I would guess so. It certainly sticks to everything else. Although it cures pretty hard and might be difficult to sand without damaging the styrene.

[ctruss53]

Here, I actually  just started a fillers discussion yesterday. I came to the conclusion that a CA with some filler powder in it is worth a shot.

 

Edited June 27, 2023 by ctruss53

[Ace-Garageguy]

39 minutes ago, gary jackson said:

so will regular two part bondo stick to sanded styrene

Absolutely, yes, 100% IF you sand thoroughly and mix correctly.

I sure as H. wouldn't put this much effort into something that didn't work.

 

Edited June 27, 2023 by Ace-Garageguy

[peteski]

As I understand, Bondo is a polyester resin based body filler.  It will adhere to polystyrene well.

As for the small, I actually like that odor (in small and low-concentration quantities).

Edited June 27, 2023 by peteski

[Shark]

A benefit to 2 part (catalyzed) fillers is they don't shrink over time like a single stage

[Deathgoblin]

I must recommend when working with the Bondo spot putty: for the love of all that's holy, wear a mask!  I was working with this stuff and started developing a really BAD cough.  I keep an inhaler, but that wasn't helping.  It only went away when I stopped using it.  It says on the packaging that it can cause silicosis.  It works great, but wear a mask.

[Ace-Garageguy]

11 minutes ago, Deathgoblin said:

I must recommend when working with the Bondo spot putty: for the love of all that's holy, wear a mask!  I was working with this stuff and started developing a really BAD cough.  I keep an inhaler, but that wasn't helping.  It only went away when I stopped using it.  It says on the packaging that it can cause silicosis.  It works great, but wear a mask.

Is that the one-part or the two-part Bondo spot putty?

[peteski]

1 hour ago, Deathgoblin said:

I must recommend when working with the Bondo spot putty: for the love of all that's holy, wear a mask!  I was working with this stuff and started developing a really BAD cough.  I keep an inhaler, but that wasn't helping.  It only went away when I stopped using it.  It says on the packaging that it can cause silicosis.  It works great, but wear a mask.

I suspect this would be a problem when sanding the hardened product. I believe Bondo contains silica as a thickener, so the sanding dust will also contain silica.

[Ace-Garageguy]

20 hours ago, peteski said:

I suspect this would be a problem when sanding the hardened product. I believe Bondo contains silica as a thickener, so the sanding dust will also contain silica.

Not to be too pedantic, but I strongly recommend reading the SDS for any product prior to speculating on the internet, where everything is rebleated infinitely, whether it's factual or not.

The SDS (SAFETY DATA SHEETS) for just about everything even remotely hazardous are readily available online.

The specific hazards, types of testing done to identify them, etc. etc. are fully examined here. RE: Bondo Professional (2-part)

https://multimedia.3m.com/mws/mediawebserver?mwsId=SSSSSuUn_zu8l00xM8tGMYtSPv70k17zHvu9lxtD7SSSSSS--

EDIT: I've worked with catalyzed polyester resins, fillers, and epoxies (as well as all manner of paint products) for well over 5 decades, using reasonable PPE, good ventilation, and common sense, and have suffered zero ill effects. 

Read the SDS info, read the instructions (TDS: technical data sheets), pay attention, use common sense, be careful.

 

Edited June 29, 2023 by Ace-Garageguy
CLARITY

[1930fordpickup]

On 6/27/2023 at 10:40 AM, ctruss53 said:

Yes. It actually works very well.

But it is very stinky. So be prepared for that if you use it in your home.

Chad, try putting the part you are working on until it is done curing in your paint booth to get rid of the smell. Don't sand the part in there, just let it gas out in there.