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Replicating realistic weld seams for dummies
scoccia
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Milano, Italy
Joined: September 02, 2002
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Posted: Thursday, July 17, 2003 - 08:12 PM UTC


Ingredients
a- A bottle of trichloroethylene (it can be found at supermarkets in the stain-removers dept. or at art craft stores)
b- a candle
c- a lighter (or matches - to lit the candle)
d- liquid glue (the thin one with brush applicator)
e- a knife
f- a few pieces of scrap sprue
g- a pair of tweezers

How to
Step 1
Lit the candle and warm up the sprue and then stretch it to the desired diameter


Stretching the sprue

Step 2
Cut a piece of stretched sprue to match the length of the weld seam you have to reproduce

Step 3
Apply the liquid glue on the model where the weld seam has to be done

Step 4
With the tweezers carefully position the piece of stretched sprue where you applied the glue, press it in place and let it rest for a few minutes




The sprue has been positioned

Step 5
Dip the brush in the trichloroethylene and brush it on the piece of stretched sprue. Repeat the process until the plastic is soft enough, usually two to three passes depending on the weld seam thickness

Step 6
Tap the knife on the stretched sprue until you get the desired effect. In case you need just apply more trichloroethylene and continue tapping

If the effect is too rough, just apply some more trichloroethylene on the weld seam to smooth it down


Front view of our weld seams


Side view of our weld seams

Happy modeling everybody!!!
Sarge59
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Nord, France
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Posted: Thursday, July 17, 2003 - 09:33 PM UTC
Thanks for the Tip Fabio !

maybe you should put it in the FEATURES + ARMOR/AFV ?


Roadkill
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Posted: Thursday, July 17, 2003 - 10:17 PM UTC
I agree, this is a perfect Feature article
WeWillHold
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Posted: Thursday, July 17, 2003 - 11:18 PM UTC
Fabio

Just a great walk through on the weld process. Very clearly described with excellent supporting pics. This is something I will print out and keep, so thanks!

Question----when weld seams are applied around lift rings, or something circular, what type of process do you use there? I believe you did this on your Cold War Campaign vehicle. Can you share the tip on that please??

Thanks----good stuff!


Steve



slodder
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Posted: Friday, July 18, 2003 - 12:24 AM UTC
Ditto Ronny - thats a superbe article. You should send it in as a feature.
scoccia
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Milano, Italy
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Posted: Friday, July 18, 2003 - 12:28 AM UTC

Quoted Text

Thanks for the Tip Fabio !
maybe you should put it in the FEATURES + ARMOR/AFV ?



Sarge59, Ronny and Slodder, I've already submitted it to Jim. If he thinks that it deserves to become a "feature" for me it's ok, he's the boss and he knows how to do the things.


Quoted Text

Just a great walk through on the weld process. Very clearly described with excellent supporting pics. This is something I will print out and keep, so thanks!

Question----when weld seams are applied around lift rings, or something circular, what type of process do you use there? I believe you did this on your Cold War Campaign vehicle. Can you share the tip on that please??



Steve, on my Centauro I've done it with Milliput because it was a resin kit, if it was a plastic one i'd use the same method shown above just glueing the sprue a bit at the time around the lift handle and then finishing in the same way. Anyway, as soon as I've got a bit of time, I'll post another one explaining the whole process with Milliput.

By the way thanks a everybody lot for the kinds words coming from very experienced modelers. Glad to be somehow helpful.
Ciao
Marty
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Posted: Friday, July 18, 2003 - 12:38 AM UTC
Fabio, this is a great article. Coupld of questions for you though. Does the trichloroethylene have any harmful fumes? If so, is there anything else that can be used in its place?
scoccia
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Posted: Friday, July 18, 2003 - 12:57 AM UTC

Quoted Text

Fabio, this is a great article. Coupld of questions for you though. Does the trichloroethylene have any harmful fumes? If so, is there anything else that can be used in its place?



Marty, on the label it says that it's harmful for inhalation and ingestion, I usually do it outside when teh fumes are dispersed immediately. If you want you can obtain the same effect with thin liquid glue (like the Tamiya with the green lid and brush applicator).
Anyway consider that almost all of the glue we use in modeling contains trichloroethylene at some extent...
Ciao
Jacques
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Posted: Friday, July 18, 2003 - 01:40 AM UTC
Fabio, very nice article. I wish all articles were this concis....er, articu...er, clear.
Marty
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Posted: Friday, July 18, 2003 - 01:42 AM UTC
Fabio, thanks for clearing that up for me.
shonen_red
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Posted: Friday, July 18, 2003 - 02:26 AM UTC
I like it! Very very much! Thanks!
shonen_red
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Posted: Friday, July 18, 2003 - 02:29 AM UTC
I just want to comment on one thing, what is trichloroethylene in a normal saying? Like H2O = water
Halfyank
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Posted: Friday, July 18, 2003 - 03:28 AM UTC
Very nice article. I will try this on my next model, hopefully a M3 Stuart.

One question, since Twig warns that Trich is very dangerous wouldn't liguid glue soften the sprue the same way?
scoccia
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Milano, Italy
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Posted: Friday, July 18, 2003 - 05:01 AM UTC
A few of you are, correctly, worried about the halth implications of using trichloroethylene. So I got in touch with a couple of doctors I know (one is a specialist in oncology) and asked them about this stuff. They all agreed that is dangerous to breath it, on of course to drink it, it but when they asked me how much of it I use on a model, that can be something like ten drops - but I'm exagerating it's a lot less, they all said that there's nothing to worry about.
I remember that once, something like 20 years ago, I went to visit a base of our Aeronautica Militare (our Air Force) and they made massive use of it, so no surprise at all that RAF banned its use. Anyway if you fellas want, I can ban it too (I don't earn any money in advertising it) and modify the article removing it and indicated possible substitutes...

Please read this as well:


Quoted Text

What is trichloroethylene?
(Pronounced try-klor'oh eth'uh-leen)

Trichloroethylene (TCE) is a nonflammable, colorless liquid with a somewhat sweet odor and a sweet, burning taste. It is used mainly as a solvent to remove grease from metal parts, but it is also an ingredient in adhesives, paint removers, typewriter correction fluids, and spot removers.

Trichloroethylene is not thought to occur naturally in the environment. However, it has been found in underground water sources and many surface waters as a result of the manufacture, use, and disposal of the chemical.

How can trichloroethylene affect my health?

Breathing small amounts may cause headaches, lung irritation, dizziness, poor coordination, and difficulty concentrating.

Breathing large amounts of trichloroethylene may cause impaired heart function, unconsciousness, and death. Breathing it for long periods may cause nerve, kidney, and liver damage.

Drinking large amounts of trichloroethylene may cause nausea, liver damage, unconsciousness, impaired heart function, or death.

Drinking small amounts of trichloroethylene for long periods may cause liver and kidney damage, impaired immune system function, and impaired fetal development in pregnant women, although the extent of some of these effects is not yet clear.

Skin contact with trichloroethylene for short periods may cause skin rashes.

How likely is trichloroethylene to cause cancer?

Some studies with mice and rats have suggested that high levels of trichloroethylene may cause liver or lung cancer. Some studies of people exposed over long periods to high levels of trichloroethylene in drinking water or in workplace air have found evidence of increased cancer. However, these results are inconclusive because the cancer could have been caused by other chemicals.

The International Agency for Research on Cancer (IARC) has determined that trichloroethylene is not classifiable as to human carcinogenicity.



If you're interested in the full article you can find it here


Shonen_red: Trichloroethylene = C2HCl3 (in Italy is sold as "Trielina")

Ciao everybody and... let me know



P.S.: the drinks are everything you like but.. Trichloroethylene!!!
JimF
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Posted: Friday, July 18, 2003 - 07:27 AM UTC
Great article, Fabio ... now I'm going to want to put weld seams on EVERYTHING, they look so good.
Violetrock
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European Union
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Posted: Friday, July 18, 2003 - 07:39 AM UTC
You can replace the trichloroethylene with Butylacetate. In itīs pure form Butylacetate is the base of many liquid glues, e.g. the Revell glue range. Itīs also mentioned on their bottles.

I use Butylacetate for my everyday glueing, because itīs thin as pure alcohol and it doesnīt make these "glue threads". Therefor itīs very easy to handle.

Violetrock

PS: On one day a will try it as a decal seting solution, because it seems to have a very good effect on the carrier film-it solves it.
ka2rvu
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Posted: Friday, July 18, 2003 - 02:24 PM UTC
Excellent article Fabio. Thank you. Even this old dog can now understand it. (++)
blaster76
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Posted: Friday, July 18, 2003 - 02:42 PM UTC
Truely outstanding Fabio. definitely enhance any model tank
Pieter
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Posted: Friday, July 18, 2003 - 03:30 PM UTC
Fabio,

Very nicely done. Very informative. Thank you for sharing
Tony_Frey
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Missouri, United States
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Posted: Friday, July 18, 2003 - 04:09 PM UTC
Great article Fabio. I'm going to try it out on some Soviet armor I'm working on right now. Thanks!
HellaYella
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Posted: Wednesday, August 27, 2003 - 10:35 PM UTC
ok, so how would I do this on a Hanomag with Tamiya putty?
scoccia
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Milano, Italy
Joined: September 02, 2002
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Posted: Thursday, August 28, 2003 - 08:39 AM UTC

Quoted Text

ok, so how would I do this on a Hanomag with Tamiya putty?


I tink that doing it with Tamiya's putty won't be the easiest way. These are done with stretched sprue. Another suitable way is with Milliput. I'm not an expert on German WWII armour, so I don't know what's the type of weld seam you have to reproduce.
A great feature on weld seams can be found here in Armorama following this link...
Ciao
 _GOTOTOP