Tips on bondo

[stilltippin863 10+ year member]

i just wrapped my back dash and resined it ...letting it dry over night then gunna hit it tomorrow with some light sanding ....i am thanking of putting bondo then sanding again to get smooth...can someone give me some tips on useing bondo... just put some on a board then add hardener then apply it smooth as you can then sand??? please help dont want it to jelly up on me and dont want to mess the dash up...

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[Sir-Lancelot 10+ year member]

Work in small batches and try to get it as smooth as you can. You can sand a little while it's starting to harden. It will kinda crumble but get it as smooth as possible. It's a bish to sand I aint going to lie.

It wont jelly up like the resin.

 

[bhsdriller 10+ year member]

Apply it as smooth as you can so there's less sanding in the end

 

[kmanian 5,000+ posts]

don't try to do it all in one coat, think of it like drywall mud.

get a wrasp and use it to rough in the shape, take off the high points while it is still green.

then do a second thinner coat, and sand with 80 grit moving to 120-240

if you don't have finishing putty, thin the bondo with acetone a little and put a 3rd coat and go from 240 to 400 grit.

 

[F A T B O Y 10+ year member]

Like lancelot said, try to get it as close to smooth as you can before it fully dries, then touch up after it's dry. Don't glob it on, just use what is necessary haha. You'll understand once you start sanding.

 

[branham1127 10+ year member]

Like lancelot said, try to get it as close to smooth as you can before it fully dries, then touch up after it's dry. Don't glob it on, just use what is necessary haha. You'll understand once you start sanding.

This...and for future use if you have a little extra money, this stuff really is awesome..

Amazon.com: Fibreglass Evercoat 120 - Rage Extreme Premium Lightweight Body Filler Gallon: Everything Else

I always used regular bondo and then had this recommended to me.. It goes on sooooo much nicer.. its thinner than normal bondo which makes it alot easier to spread also.. Been very helpful lately since its still pretty cold where I live and bondo doesn't like to spread much when its cold. It also is alot easier to sand once its dry than normal bondo, I'm not exactly sure why though lol.

 

[mbrooky 10+ year member]

what i did was take about a sand dollar size of body filler and about a dime size or so of the red hardener and mix it up real good...pick up one of those bondo plastic spreaders which are real cheap and apply real thin coats of it.....the smoother you do it the less sanding you have to do....then if you want, make another batch and add 2-4 ounces of resin and hardener, mix it up to make up some milkshake and pour it on or use a paint brush or sponge and make it real smooth and will fill in all the little holes and imperfections.

I did this to my door pods.

body filler before sanding (and a couple puffs taken from hookah) //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif:

sanded down:

then some milkshake:

then some paint...and wala: //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

 

[stilltippin863 10+ year member]

**** that looks good!!!! ^^^^....thanks so much for everyone replys....will let ya'll know if i need anymore help //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[450rdawg 10+ year member]

It all depends on how smooth you want it. I personally use a cheese grater (can be found at any body shop supply house) when it's drying. If your resin dries pretty smooth and you can get it pretty nice then I wouldn't even suggest using bondo. I would use iceing or some other type of glaze. It takes less coats and doesn't pit as badly as bondo. Also need to remember that you get what you pay for when it comes to any type of filler. I've been doing paint and body work for 17 yearts and if I've learned anything, it's that less is more. As others have said, do it in layers and as soon as you start to see the resin sand through stop, wipe it again and re sand. Wipe as smoothly as possible and use a small spreader in areas with lots of contours. For the final sanding, I highly suggest using a block to get it straight. You can even use a block in most curves if you find the right teknique(sp). Good luck and show us pics when done.

 

[SPLaudio 5,000+ posts]

def milkshake it. a milkshake is bondo and resin mixed and add both hardeners. it goes on really easy and flows making it smooth. i like to use resin and fiberglass jelly mixed, lil harder after dry.