Your way of filling joints

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Your way of filling joints

Postby B.T.M. » Mon Dec 13, 2010 4:54 pm

Today ihad to fill a small seam using tamiya filler and made a complete hash of it.I would like to know your ideas on both fillers and what you use to apply them.
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Re: Your way of filling joints

Postby harvs73 » Mon Dec 13, 2010 6:20 pm

It all depends on the size of the gap. If they are very fine I might use Mr Surfacer 500/100. If it is a bit bigger I use Tamiya or Humbrol filler. But if it is a very big gap I fill it with plastic card or sprue. Once it is dry I sand it back a bit then use one of the other fillers to smooth it out. I use the card/sprue as too much filler is not very structurally sound, ie no strength, and the card strengthens the joint. If you just use filler on a large joint it will crack after a short period as well as it can melt plastic if too much is used in one spot.
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Re: Your way of filling joints

Postby Creative Models Australia » Mon Dec 13, 2010 7:27 pm

Hi Bob,

Agree with Dave, appart from, with small gaps, I try to eliminate this first, by angling the joint with a few scraps of a knife, which will help force soften plastic out, and hence cause a ridge that can be sanded with little or no putty.

When that little bit of putty is needed, I use Tamya acrylic paint, by allowing it to coagulate first, and then going over the seam
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Re: Your way of filling joints

Postby Calum » Mon Dec 13, 2010 8:27 pm

I pretty much use super glue on all seams.

It is the only thing I've found that doesn't result in seams reappearing later on. I use accelerator to set it and then sand. You can scribe over it in a few minutes, so it gets used whenever I may need to re-scribe

I do use Mr surfacer / Tamiya putty and Magi Sculpt for various other filling task but Super glue (or CA) is the best for seam elimination.
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Re: Your way of filling joints

Postby Dave Brewer » Tue Dec 14, 2010 6:07 am

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Re: Your way of filling joints

Postby PeterRus » Thu Dec 16, 2010 7:07 am

In using super glue. This is ok if you don't get a lot of humidity in your area. The further north you go the more chance the super glue will crack, even using the good expensive stuff.
I got put on to the really good filler. It is not cheap. It is two-part car filler. Comes with a small bag of catalyst (use sparingly). The beauty of this filler is there is no shrinkage. Another plus is you won't have to buy anymore filler again. There is a small amount of heat, but it will not melt plastic.

HTH

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Re: Your way of filling joints

Postby skypilot » Thu Dec 16, 2010 7:56 am

I use Super glue mixed with Talcum Powder (baby Powder) not Corn starch Powder. It remains sandable for a lot longer, fills panels lines and small gaps beautifully and scribes better than any other filler apart from %100 superglue. I use it almost exclusive, occasionally I use Mr surfacer but not so much anymore.
PS I never use accelerator up here I find it bubbles up the superglue and can leave small air bubbles and burns like crazy if you have some superglue on your fingers when you apply it. If I want the superglue to set quickly I use plain old water.

regards

Peter
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Re: Your way of filling joints

Postby asho77 » Thu Dec 16, 2010 8:06 am

Tamiya putty and Tamiya masking tape !! Helps to replace some of those lines sanded off on the really old kit's I stll have from the 1980's with...god forgive me.....RAISED PANEL LINES :o

Tamiya is more powder based and sands easier and finer. Some of the other Korean stuff/chinese stuff is more plastics based and I've found with too much, bcms very messy and even has melted some kits, leavng a nice big sink hole effect !
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Re: Your way of filling joints

Postby Creative Models Australia » Thu Dec 16, 2010 8:17 am

Pete, Doesn't matter where you but accelorator always bubbes cyno. Thats why I neve use cyno for gaps. I have used it before, with and with out accelorator, and have always had to putty over it. Cyno is also very brittle, and hard to sand.
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Re: Your way of filling joints

Postby skypilot » Thu Dec 16, 2010 8:52 am

There you go I thought accelerator was just a problem up here. I hate the stuff.
If you mix superglue with talcum powder it is easy to sand, I don't find being brittle a problem for gap filling but I would never use it by itself for structural joins. I do mix it with polystyrene glue for a quick set up and plus the benefits of the welding properties of the poly glue.

I have learnt the hard way never drop a model glued with superglue. Easy to disassemble though. LOL.

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