best glue

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best glue

Post  judchic on Sun Oct 25, 2009 5:36 pm

I'm thinking about magnetizing a converted marine to chaos plastic dread and i'm wondering what the best glue is to attach magnets to a flat surface?

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Re: best glue

Post  Administratum on Sun Oct 25, 2009 11:06 pm

i usually just stick with the good ol super glue. Now normally i am not a proponent of gw products, because i dont really like being =I=censor=I=, but, i do believe that they have the best super glue money can buy. I dont know what they do differently than other companies, but that stuff is really the shizzle.

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Re: best glue

Post  ScottRadom on Sun Oct 25, 2009 11:40 pm

I like Zap glues meself. Zap CA+ is awesome, and Zap-A-Gap is good 'cause it's a little thicker and fills gaps. I've always found the GW stuff a little brittle? Am I in the minority there? But when I absolutely no =I=censor=I= have to get the stuff stuck together I use JB weld 2 part epoxy. It's awesome! I remember Homer Sayer back in the day saying it's what holds most of the ancient Canadian AFV's together!

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Re: best glue

Post  Lord_Commander_Stash on Sun Oct 25, 2009 11:52 pm

Yeah GW super glue is the best out there for hobby glue. I recommend scratching up the surface of the magnet so the glue gets more surface to hold onto.

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Re: best glue

Post  Guest on Sun Oct 25, 2009 11:54 pm

Actually, if you scratched it up, wouldn't the edges of the scratches, which are raised, prevent the majority of the rest of the smooth surface from contacting the other edge of the smooth surface you are trying to attach it to?

I have always wondered at that bit of hobby advice. I know I've always had better luck with smooth to smooth than rough to rough, just because it fits together better and gets a better, tighter join.

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Re: best glue

Post  Lord_Commander_Stash on Mon Oct 26, 2009 12:16 am

GodHead wrote:Actually, if you scratched it up, wouldn't the edges of the scratches, which are raised, prevent the majority of the rest of the smooth surface from contacting the other edge of the smooth surface you are trying to attach it to?

I have always wondered at that bit of hobby advice. I know I've always had better luck with smooth to smooth than rough to rough, just because it fits together better and gets a better, tighter join.

Its the porosity of the material to be glued that makes the glue stick. Basically they are very small holes in the surface where the glue can enter. Scratching a grove in the surface effectively expands the amount of surface which the glue can hold onto.

Ideally you want to make groves on each surface that match up with each other so that the high points of one surface enter into the groves of the other.

When gluing miniatures together I found that if a joint had trouble gluing, that putting scratches in each side would make it bond much stronger.

It is interesting to study though: At what point is a cavity to deep for the glue to work effectively? Putting it another way: we all know that you should have as little of a gap as possible when gluing two pieces, yet pieces with jagged edges are easier to glue. At what point does either property maximise the effectiveness of the glue?

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Re: best glue

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