Bondo questions.

G.I. Jesus · 07-19-2005, 05:45 PM

The next Computer I will be building is going to be in this case:

http://www.xoxide.com/aspire-x-qpack-case-silver.html

My question is if I take the handle off the front then bondo it, sand and paint will the bondo create a different texture then the plastic?

blink182av · 07-19-2005, 05:58 PM

i use plastic epoxy, i am not sure about bondo. the paint will be the final finish, so that will be a texture.

civic2ner89 · 07-19-2005, 05:58 PM

depends on what sand paper you use. if you use fine sand paper then is will feel more smoother. and u mite want to think about sanding the whole front not just the bondo to ensure the same texture.

BeaMeR · 07-19-2005, 06:25 PM

If your planning on doing this I would sand and paint everything so it's perfect match.

G.I. Jesus · 07-19-2005, 06:40 PM

I dont want a texture. Im wondering if the bondo will make a different "rougher" texture then the plastic

**jfkfhhfj** · 07-19-2005, 07:11 PM

It shouldnt, Gotta sand it really good though, as long as you make it smooth it'll be no difference

G.I. Jesus · 07-19-2005, 11:19 PM

Ok thanks guys!

jolancer · 07-20-2005, 01:58 AM

why loose the handle though? so your computer doesnt look like its smiling at you all the time?

TimberWolf · 07-20-2005, 04:17 AM

You don't want to use Bondo to fill a gap like that.

Epoxy the handle in place - let it cure - and then use more epoxy in thin layers as a "filler" material. Don't try to fill the depression(s) all the way with epoxy, because it'll be harder than the surrounding plastic, and difficult to sand evenly. Just leave a slight depression, and fill that to slightly above the surface with Glazing Compound (also known as "Spot Putty"). Wet sand that smooth, using a wood or hard rubber block to support the paper. Glazing putty shrinks a bit as it dries, so you may need a second application. Wet sand to a smooth finish, prime, wet sand again, and paint with your chosen color.

BTW - The reason you apply epoxy in thin layers is because it generates heat from the chemical reaction as it cures; apply a lot at one time, and it can generate enough heat to melt the surrounding plastic and cause it to sag or distort.

Velocity1 · 07-20-2005, 07:22 AM

nah bondo will work fine for it as long as he uses enough of the hardener in the mix... and yeah sand the hole thing then repaint it and texture should match all around

TimberWolf · 07-20-2005, 08:23 AM

More hardener = Brittle and prone to cracking

Once the epoxy has cured, it isn't going to crack or pop out . . .

FYI - I don't waste my time posting useless BS

Brian · 07-20-2005, 08:25 AM

If you go the route of bondo, and worry about texture differences,
Maybe just lay a thin layer of bondo on the entire area before you repaint, and sand it the same, so it's got the same texture/effect?

I'd listen to Timber myself though, he's usually got a knowledgable head on his shoulders..
Speaking of which, timb... can you link us to some of your work?

blink182av · 07-20-2005, 09:48 AM

Quote:

Originally Posted by TimberWolf

You don't want to use Bondo to fill a gap like that.

Epoxy the handle in place - let it cure - and then use more epoxy in thin layers as a "filler" material. Don't try to fill the depression(s) all the way with epoxy, because it'll be harder than the surrounding plastic, and difficult to sand evenly. Just leave a slight depression, and fill that to slightly above the surface with Glazing Compound (also known as "Spot Putty"). Wet sand that smooth, using a wood or hard rubber block to support the paper. Glazing putty shrinks a bit as it dries, so you may need a second application. Wet sand to a smooth finish, prime, wet sand again, and paint with your chosen color.

BTW - The reason you apply epoxy in thin layers is because it generates heat from the chemical reaction as it cures; apply a lot at one time, and it can generate enough heat to melt the surrounding plastic and cause it to sag or distort.

I agree; I was at a plastic store picking up smoked acrylic for my project, i asked about plastic filler, they gave me epoxy. Wet sanding works very well on epoxy. Wait at least 16 hours for it to settle before sanding, or else you can distort it.

KiGrind · 07-20-2005, 10:18 AM

Quote:

Originally Posted by G.I. Jesus

I dont want a texture. Im wondering if the bondo will make a different "rougher" texture then the plastic

Bottome line is you have to sand it smooth, its not a hard conecpt. Why do you not want a handle anyways, its the purpose of the case to have a handle.

To use Bondo properly it requires sanding, if you dont sand your wasting your time you could have used elmers glue to make a giant gloop patch on the side of something.

G.I. Jesus · 08-08-2005, 03:43 AM

I never said I didnt want to sand. I was wonering if the bondo would make a divverent texture than the bezel. but I have an answer now. and the answe is no.