Fiberglass or Rondo

[MetalChicken351]

As noob, should I use fiberglass or rondo for the interior of a scout helmet? I have a completed pepakura model and am ready to move on. I have read/watched several tutorials but am not sure which to use.

 

[RedJak]

Fiberglass take a little experence than rondo
I personaly perfer fiberglass ,because to me rondo feels like a waste rondo is faster

 

[MetalChicken351]

Thanks, Is there a brand you recommend?

 

[AlexSpartan177]

Thanks, Is there a brand you recommend?

Rondo is not a product.

Its a mixture.
I prefer rondo because its easier to use and strong.
It alsosaves you money by not buying fiberglass.

All you need is resin and carbodyfiller to make a helmet.

So to make rondo, just make a mix of rondo and resin.
Add more resin if you want the rondo to be watery or add more rondo to make it chunkier.

Use both hardeners, to make sure it will harden properly.

 

[MetalChicken351]

Sorry, I ment is there a brand of bondo or a brand of resin you recommend.

 

[Hugh Holder]

I go to Advance Auto Parts and buy Bondo Body Filler and Bondo Resin. Probably not the cheapest choice but it's convenient.

 

[MetalChicken351]

Thanks, should I do anything special in the bill, it is a scout helmet so there is a large hollow area, Should I leave it hollow?

 

[amancue]

I go to Advance Auto Parts and buy Bondo Body Filler and Bondo Resin. Probably not the cheapest choice but it's convenient.

actually bondo brand is one of the cheaper out there,. though maybe not the cheapest place to buy it.

 

[Scrub]

Sorry, I ment is there a brand of bondo or a brand of resin you recommend.

Bondo is a brand Bondo comes as a body filler, fiberglass resin, and putty. For rondo, if you followed Ben's videos on how to make a helmet from start to finish, all you need is Bondo Body Filler and Bondo Fiberglass Resin, both relatively cheap at your local walmart / automotive store. I got a gallo on each for no more than 30 bucks each.

 

[razack0404]

i know it is a inexperienced question but why does one only fiberglass the inside of a helmet? just would to know for reference.

 

[Scrub]

Well, there's more than just one method. Some people fiberglass the inside, others use rondo, and a few use both. It's all about preference.

 

[MetalChicken351]

again, Would I put extra Rondo into the hollow bill?

 

[hollywood]

If using rondo alone to strengthen and add rigidity to the interior of an already resined pep piece, I prefer to add a single coat to the interior with a paintbrush, then do a big rondo slush. There are 2 reasons for this.

1. It is incredibly easy to warp the relatively weak pep piece by dumping a big ole cup of heavy rondo inside of it and then slushing it around. Adding a thin layer first allows you to strenghten the piece enough to prevent warping before you really make it solid.
2. you dont have to worry about air bubbles/ nonadherance of fiberglass cloth. Its really frustrating to be sanding the exterior and then a nice pothole appears where the paper was not supported.

hope this helps. Again there's a million ways to skin a cat. best of luck on your project.

 

[MetalChicken351]

Thanks, It helped alot

 

[kaboose00]

i use both, fiberglass on the inside and rondo on the outside, call me cheap but its to thin the bondo and to make a thin and tough yet more sandable outside.
well, CHEERS! (im not british. i just wanted to say it)

 

[ShadoKat]

i know it is a inexperienced question but why does one only fiberglass the inside of a helmet? just would to know for reference.

If you're talking about using fiberglass mat/cloth, you do it on the inside because doing it on the outside removes (or at least muddies) all the beautiful detail that pepakura has done for you.

As long as we're about it... Hey, everyone... when you say "fiberglass," can you please specify whether you're talking about resin or mat/cloth. Especially when you're using it as a verb to refer to the process. People use them interchangeably and sometimes it's hard to be sure which you're talking about. Thanks!!

 

[matth101]

im one of the guys that used both rondo and fiberglass on the inside of my pieces. My mix was 50/50 resin/bondo and I did it outside in the afternoon when it was hot so the mix was nice and warm and easy to slush around. It gave it a nice thin coat, didn't warp, and it was pretty solid. I also went over that with a layer of fiberglass mat to give it some extra strength.

 

[bking36]

If using rondo alone to strengthen and add rigidity to the interior of an already resined pep piece, I prefer to add a single coat to the interior with a paintbrush, then do a big rondo slush. There are 2 reasons for this.

1. It is incredibly easy to warp the relatively weak pep piece by dumping a big ole cup of heavy rondo inside of it and then slushing it around. Adding a thin layer first allows you to strenghten the piece enough to prevent warping before you really make it solid.
2. you dont have to worry about air bubbles/ nonadherance of fiberglass cloth. Its really frustrating to be sanding the exterior and then a nice pothole appears where the paper was not supported.

hope this helps. Again there's a million ways to skin a cat. best of luck on your project.

Arghh... this is probably what happened to my helmet. I just dumped a whole bunch in there.

Anyways, I just discovered that there is a Reynolds in North Hollywood, and I'm about to go pick some smoothcast 320. Can I follow this same process with this product? I am under the impression that it acts exactly like Rondo.

 

[Hickeydog]

Because you loose a lot of details by fiberglassing the inside.

 

[loxton117]

just wondering. . .

hey there, all the advice is fantastic, but just some small details i would like, do you need bondo putty to make rondo? does it need to be that brand for ay specific reason, can i use any sort of body filler? i have just come accustomed to using fiberglass now and this way looks tons easier for my climate so i wanted to give it a go. thanks guys