Subject:
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Re: Glueing old lego
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Newsgroups:
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lugnet.general
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Date:
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Sat, 28 Aug 2004 04:27:13 GMT
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Viewed:
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1269 times
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In lugnet.general, David Laswell wrote:
> In lugnet.general, Huub van Niekerk wrote:
> > I'm trying to glue some broken parts of 25 years old Lego. The parts are
> > (amongst others) an ship-compartment (red coloured) and 2 pieces of rails
> > (blue coloured). Can somebody please tell me what type of glue I should use
> > for this?
>
> Do you want to be able to use the pieces like they were new? If so, don't
> bother trying to fix them with MEKs. When you use solvents to weld two pieces
> of plastic together, the joint will be very weak and easy to break if you just
> touch them together. In order to get a good strong weld you need to compress
> the joint as much as possible so the polymer chains will tangle around each
> other, which causes gooey plastic to squeeze out of the joint, which means it'll
> be considerably shorter than it was before and won't work with standard stud
> spacing. There is an epoxy called methacrylate that does a decent job of
> bonding certain plastics together, but it really needs a large bond surface to
> make a strong joint. 3M has some really freaky exotic epoxies these days, and
> one of them in particular seems capable of bonding to darn near everything but
> liquids and gasses (I've seen a sample stick composed of various types of 1"x1"
> materials, from an absurd variety of plastics, including the stuff used to make
> milk-jugs, to even a few metals like steel and aluminum). The downside? It'll
> probably be cheaper and easier to just buy replacement parts
For the blue track, yes it will be cheaper (assuming it's not the electric).
Check out Peeron parts 3228a (straight blue track), 3229a (outside curve track)
and 3230a (inside curve track). There are Bricklink sellers that have it in
inventory for less than 50 cents per track!
Gary Istok
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Message has 1 Reply:
Message is in Reply To:
 | | Re: Glueing old lego
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| (...) Do you want to be able to use the pieces like they were new? If so, don't bother trying to fix them with MEKs. When you use solvents to weld two pieces of plastic together, the joint will be very weak and easy to break if you just touch them (...) (20 years ago, 28-Aug-04, to lugnet.general)
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