coating raw brass for gluing to plastic ?

Hi,
Now whilst current etch-brass is coated as its been found to be better for
gluing if coated, if you do your own etch-brass, as I sometimes do, getting
it to stick to plastic is ok if its not under any stress. Test pieces given
slight fingernail tweaking come right off, glue on plastic and nothing on
the brass, brass doesnt take glue well. I have to get brass to take to an S
shaped curve and so will be heating it up and letting it cool naturally,
that removes the springiness, however seeing how the brass comes off unless
coated, I would be happier to know its on and for good.
Has anyone found the best way of coating raw brass ?...does cellulose primer
allowed to dry thoroughly (can this be accelerated with heat successfully)
then evostick, or thixofix (latter now made by Alpha, previously made by
Dunlop) do the job ?
Is it ok to use acrylic primer ?
I shall go and experiment I guess.
If one wanted to electrically coat the brass as is done to the etch brass,
how is that best done in a domestic situation ?
Steve
Reply to
Steve
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When I've used PE of questionable origin/quality,I take the lazy way out with a coat of future to seal it in place,after painting it the appr> Hi,
Reply to
eyeball
Make sure it is scrupulously clean. Sanding it with fine sandpaper helps on larger pieces. I usually paint my PE before I put it on model, and always prime it first. I have had no problem with either the painted or unpainted PEsticking to model, but very few pieces are unpainted. I use Krylon primer on everything, even brass.
When I do larger brass stuff like hinges, LG stuff, etc, that is when I do carefully clean and sand, because the bigger pieces do sometimes have an adhesion problem. If you are doing any soldering on the brass, make sure you carefully clean away any flux.
Reply to
Don Stauffer in Minnesota
Two things that work really well -
1. use CA and apply between the brass and non-painted plastic. 2. use watch crystal cement for areas that require a bit more working time, and have flat contact areas.
I never bother with coatings, priming, or washing of parts and I never have anything pull up as long as I do these.
Reply to
Rufus
Where do you get watch crystal cement?
Reply to
willshak
on 12/9/2007 3:16 PM willshak said the following:
Never mind. I found it at Micro-Mark
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Reply to
willshak
I get watch crystal cement from Micro Mark -
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I've been using the same two tubes (one yet to be opened) for years now, so the stuff is dirt cheap.
I also like to use the black CA meant for gluing tires - it's thick, presumably more flexible than regular CA, provides a bit more working time, and is easier to see against both the plastic and brass.
Reply to
Rufus
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Yup!
Reply to
Rufus
If you have a Hobby Lobby close, they have the watch crystal cement in the jewelry making area or with the beads. With the 40% off coupon, you can get it for about 2 dollars.
Reply to
Count DeMoney
No Hobby Lobbys in the NE US.
Reply to
willshak

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