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  1. CuteLucca's Avatar
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    Dec 15, 2007, 1:46 AM - Bondo, bondo, bondo! #1

    So I know a lot of work gets done here with bondo. My question is-- what exactly is it and where can I get it?

    Any tips to give a bondo virgin? I have extensive experience sculpting with softer materials, like clay, but from what I can tell you just sculpt the general shape with the bondo then sand it down to where you need it.

    It seems to be the perfect blend between a solid, tough finished object and ease of workability, so I really want to give it a shot.
  2. SinisterFett's Avatar
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    Dec 15, 2007, 4:07 AM - Re: Bondo, bondo, bondo! #2

    I'm not sure you're on the right track with this, but then I may be wrong.
    From what I understand "Bondo" is a brand of auto body filler and is used by folk to patch up gaps or imperfections in castings or scratch built items. I'm pretty sure you can't sculpt with it. I know when I have a job that someone says requires "Bondo" I use body filler and it all works out fine.
  3. stormtrooperguy's Avatar
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    Dec 15, 2007, 10:59 AM - Re: Bondo, bondo, bondo! #3

    bondo was born automotive body filler. there are a couple of variants now, but i couldn't tell you the difference between them functionally.

    you can get it at home depot in the adhesives area or any auto parts store.

    as far as sculpting in it, that could be a challenge. it starts off as a paste, maybe a little more workable than cake frosting. when it starts to set up, it goes REALLY fast... from paste to rock faster than you can say "grrr! all this bondo wasted!!!"

    how big a piece are you looking to sculpt? my favorite quickie sculpting medium is epoxy putty, available in the plumbing section of home depot. it's about $6 for a tube that's about 1/2" diameter and maybe 7" long. you cut a slice off, knead it together, then go. you get about 5 minutes where it's easily workable, then by 10 minutes it's solid as a rock.

    for small stuff, it's awesome.
  4. teabo's Avatar
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    Dec 15, 2007, 8:00 PM - Re: Bondo, bondo, bondo! #4

    the expoxy putty can it be sanded and used on fiberglass also the diffrence in resin .i have a small crack in a helmet that was given to me also a few gaps in the helmet what is the best material for that
  5. CuteLucca's Avatar
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    Dec 15, 2007, 10:03 PM - Re: Bondo, bondo, bondo! #5

    Agh darnit, I should have been more specific. I'm not looking to sculpt objects (I do most of my objects from wood already, and it works great) but I would like to add a 3/16 height 'mohawk' to my helmet. I figured making a cardboard template which laid on top of the helmet then filling the hole in the template with the material-- in this case, I was thinking bondo would work, considering what I understood about it-- then sand it uniform once it hardened.

    Epoxy putty would work for this as well, I know, as I *have* done some work with that before, but I'm not sure how well it would adhere to the dome in a big, flat sheet like that.
  6. Z-man12's Avatar
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    Dec 16, 2007, 12:42 AM - Re: Bondo, bondo, bondo! #6

    Well you could use expoxy putty and then rivit through the dried putty and then use bondo. But I think that would be a bit on the crazy side. I think it would be best to use sentra or some other plastic to build up the mohawk and then smooth it out with bondo or some other filler.
  7. stormtrooperguy's Avatar
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    Dec 16, 2007, 1:29 AM - Re: Bondo, bondo, bondo! #7

    so far that putty has seemed to adhere pretty well to everything i've used it on.

    but that's a lot of putty!
  8. stellardude's Avatar
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    Feb 13, 2008, 12:34 AM - Re: Bondo, bondo, bondo! #8

    Quote tk7602 said: View Post
    so far that putty has seemed to adhere pretty well to everything i've used it on.

    but that's a lot of putty!
    Yes.. and it seems like it would be a lot of Bondo too. It would probably work well if you're using it to fill in a hollow piece. It's not very heavy once it sets either.

    I just used some Bondo today for the first time and it really does set fast!
    The description of it being like cake frosting is very accurate! When the two parts are blended together it takes on a consistency almost exactly like cake frosting... and when it sets it's like frosting that's been left out for a few days... a bit brittle... but easy to sand. It's really just intended for patching holes and cracks I think.
  9. younginfett's Avatar
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    Feb 13, 2008, 1:20 PM - Re: Bondo, bondo, bondo! #9

    i love bondo's spot glaze putty. pre mixed in a nice tube it dries fast and smells nifty.

    4 bucks at any auto shop.

    just look for the spot glaze putty. black/red tube.

    rocks hard. dries clean sands crisp.. sexy.
  10. tubachris85x's Avatar
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    Feb 14, 2008, 9:37 AM - Re: Bondo, bondo, bondo! #10

    Yea, it should work for you. 3/16 inch high you said? Thats a very short mohawk, and it should be no problem if your just going to use bondo for it. How wide is it going to be?
  11. Stormrider's Avatar
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    Feb 14, 2008, 1:50 PM - Re: Bondo, bondo, bondo! #11

    Im thinking this thread is dead-ish, as she ordered two domes, and used the second dome (from bradleyfetts vac'd helmet kits) as the mohawk, then filled in the gap.
  12. Shinobi_Fett's Avatar
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    Sep 23, 2008, 12:04 PM - Re: Bondo, bondo, bondo! #12

    IT'S ALIVE~! My Bondo question is this.... which is the best Bondo to use? There's general purpose Bondo, and Automotive Bondo. Which is better and why? And the glazing Bondo I take to be a thin fine coat after the major work is done?

  13. CombatBaby's Avatar
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    Sep 26, 2008, 10:07 AM - Re: Bondo, bondo, bondo! #13

    I've used the BONDO that comes in both the red and teal tubs and it always works the same.

    All you have to do is make sure you get the putty mix and not the polyester resin you used with fiberglass weave.

    I would recommend actualyl buying BONDO and not generic autobody filler. i just like the way the bondo sets
  14. ScottyK's Avatar
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    Sep 26, 2008, 11:59 AM - Re: Bondo, bondo, bondo! #14

    Here is the stuff I use. It is like Bondo, but because it has "marine" in the name is a little more expensive. Gotta tell you though, it works wonders. Adheres to most plastics / resins and can be sanded and cut like it is wood.

    http://www.boatersworld.com/product/376800074msk.htm
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    Sep 26, 2008, 2:20 PM - Re: Bondo, bondo, bondo! #15

    I botched my first attempt at a pepakura Boushh helmet (air bubbles in the fiberglass inerts) but proceeded to bondo it to test the stuff out...

    Now we can only get Isopon here which I imagine is the same thing but for doing an entire lid in it it gets rather heavy and I can only think that getting the finer details is gonna take a LOT of sanding... SOoooo...

    Is there a filler/resining/whatever product that is easier to spread??? Something paint-on/brush-on or at least with the consistency of spreadable butter or thick oil? I think Im a gonna loose a LOT of finer detail with auto filler...

    Oh - this is the Isopon stuff:

    http://www.halfords.com/webapp/wcs/s...tegoryrn_70054

    Thanks folks!

    Dave
  16. Stormrider's Avatar
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    Sep 26, 2008, 2:57 PM - Re: Bondo, bondo, bondo! #16

    If you use epoxy clay, it hardens over a 4 hour period. And its smoothable with water.

    So you can sculpt it to a nice shape, then use a wet sponge to smooth it and your fingers to adjust it. Get it close, then sand it, it sands like bondo creme.

    I bought a gallon kit (2 gallons) for a hundred bucks, but they sell a small kit too.

    Its a little brittle when it dries, it doesnt flex much, but its rock hard and adheres to about anything. I highly recomend it.

    I think mine was called 'magic sculpt'
  17. Member Since
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    Sep 26, 2008, 3:51 PM - Re: Bondo, bondo, bondo! #17

    Hey Stormrider!

    Thanks for taking the time! This stuff sounds like just what Im after - certainly until the confidence builds up a bit to work in 5-10min stints before hardening a la bondo!

    I would be building in card, and fiberglassing the inside so brittle and no flex should be fine!

    Thanks again - off to google I go

    Dave
  18. Shinobi_Fett's Avatar
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    Oct 16, 2008, 12:05 PM - Re: Bondo, bondo, bondo! #18

    Another question: what sort of prep/materials should I be concerned with while working with Bondo? For example, I've read that good ventilation and a breathing mask are required. Does this mean a paper mask type, or heavier duty facemask with filters? And is working outdoors best, as opposed to in a garage? Is the harm from the fumes of the agents themselves, or post-curing dust while sanding? I know I can just google Bondo, but I prefer the Fett community's advice!
  19. Member Since
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    Oct 16, 2008, 2:05 PM - Re: Bondo, bondo, bondo! #19

    Hey mate!

    I ALWAYS use a respirator with changable filters & have a fan on in the garage Im working in... IMHO a paper mask is worse than useless as its basically as dust mask... nothing more.

    Some folks will say your fine without it but as someone who has had problems with their health suddenly sneak up on them (Ulcerative Colitis) it is not worth the $40ish a filter costs to risk your health!!! Once the damage is done there is no going back...

    So Im new to the whole thing but ALWAYS use the hospital type rubber gloves (the ones with talc on them - a couple of quid for 5 pairs) and a respirator... its not too obstructive and the alternative scares the willies outta me

    HTH

    Dave
  20. Shinobi_Fett's Avatar
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    Oct 16, 2008, 2:37 PM - Re: Bondo, bondo, bondo! #20

    Sweet Jeezus! That's a freakishly horrible disease to risk getting! :O That might even put me off bondo altogether! At the very least, I'll work outdoors, or with my garage door open!!! Again, is that in the chemical fumes, or sanding dust? Just wanna know what's worse. Is there any safer filler/glazing compound out there? I've been using epoxy putty so far, but for my JP body I'll have to use something much heavier duty. Yikes! Just... yikes!
  21. Member Since
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    Oct 16, 2008, 3:04 PM - Re: Bondo, bondo, bondo! #21

    Oh no mate! I got that from genetics/stress!!!

    Just saying your health can go downhill very quickly and was using it as an example - I was working away in an office job and suddenly got ill... it changed my life (as it turns out for the better!!!)

    No that has nothing to do with bondo - just an example of problems with health sneaking up and knocking you off your feet Its not worth taking any chances with not using a respirator as things can go bad way down the line!

    So anyway

    I think its the fumes that are dangerous when using bondo so I imagine sanding the bondo after curing also creates particles of whatever the filler is made of! REALLY not worth taking chances - protect yourself!

    Sorry for the confusion man! Just be careful!!!



    Dave
  22. Shinobi_Fett's Avatar
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    Oct 16, 2008, 3:33 PM - Re: Bondo, bondo, bondo! #22

    Oop! well ok, I hope I then didn't insult you by using the phrase "freakishly horrible"

    Thanks for the heads up though, definitely gonna be super cautious!

    p.s. How's things over in the Emerald Isle? My Great grandfather came from Cork!
  23. Member Since
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    Oct 16, 2008, 3:52 PM - Re: Bondo, bondo, bondo! #23

    Good gracious! Not at all mate!!!

    No worries - it is freakish!!! Haha!

    Ah my grandad was from Cork too and Ive had very long encounters with girls from Cork... In fact Id like to live there, its a beautiful city with a very broadminded population when it comes to music and the arts! Love the place!!!

    *thumbs up*!!!
  24. stormtrooperguy's Avatar
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    Oct 16, 2008, 3:54 PM - Re: Bondo, bondo, bondo! #24

    i usually use a charcoal filter respirator when working with smelly stuff, though a quick spot of bondo here and there i skip it at times.

    the paper masks are useless for anything but sanding... no help at all on fumes.

    ventilation is a Good Thing. i'm not keen on outdoors, since you can get dirt / dust / bugs stuck in your project.
  25. evan4218's Avatar
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    Oct 16, 2008, 3:57 PM - Re: Bondo, bondo, bondo! #25

    Keep in mind that Bondo is a brand, not a "thing" and its on the low rung compared to what is out there. It dose work pretty well but there is modeling filler that is more in line with hi end detail. I will have to dig up some brands but most high end hobby shops should carry several types.

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