Graupner (Deutsch) adhesives question...

[Drobie]

In Graupner's ABS kit instructions, they list several adhesives, some of which are available at Hobby Lobby.

Three are ACETON, Pattex Stabilit Express, and UHU-Hart.

Does any one know what ACETON is? Is it CA?

Pattex Stabilit Express "is a two part methylacrylic adhesive".

How does methylacrilic compare to epoxy? I got some of this stuff and it seems to be a heck of lot hard than the epoxies I've used.

[Dunk]

What's UHU-Hart?

[Drobie]

Originally posted by Dunk
What's UHU-Hart?

From Hobby Lobby's description:

Absolutely clear, ultra lightweight and strong when dried. This is the best selling model airplane cement in Germany. It dries so fast on balsa joints its almost like using CA. It is extremely strong and light. It slightly melts ABS plastic so it makes both a glue bond and a “weld” on ABS parts like boat hulls and airplane plastic fuselages.

[Jan-Nicolas]

Hi guys !

.... i´ll try to "shed some light" on this ... hope my english is well enough ... ;-)

UHU-Hart
"UHU" ist a big brand for adhesives over here. one special adhesive is called "UHU-Hart" ... it´s a one component adhesive (very stinky), that i would NEVER EVER use for gueing an ABS-Kit ! It is so aggresive, that it will melt your hull, leaving wrinkles on it ! Graupner normally puts a small amount to all it´s ABS-Kits ... never got the clue, why they do so ! UHU-Hart may be nice for Wood or equivalent materials ... but that´s it !

Pattex Stabilit Express
"Pattex" is another big brand for adhesives. The "Stabilit Express" comes in two components. One is some "greasy" stuff ... the other looks like wheat flour (or is it Cocaine ?) ;-)
Well, i see no advantage in using this stuff instead of epoxy ! There are even some disadvantages : First, Stabilit Express is not
waterproof at all .... after some (long) time, the hardened stabilit gets sticky, like a dryed chewing gum ! Before that, Stabilit is so hard, that it easyly breaks ! When you got some vibrations on your hull, there will be very fine breaks (german: Haarrisse) in it, so that humidity can easily get into the material.

Aceton
What a pity, that i can´t translate this ... Acetone is, in my own eyes, the best stuff to bring ABS hulls together. Here in Germany, you can buy Acetone at pharmacies or firms, that are producing paints and stuff. It´s a clear liquid, that is dissolving quick (stinking). When applied on ABS ... the ABS gets "soft" like chewing-gum ... and will harden back again, when the Aceton is dissolved in the air. Best is, to put the ABS-halves together and apply the Aceton with a fine and tiny brush, just where the edges come together. In 3 Minutes, you got hull and deck joined together with nothing but the original material (german : kaltes verschweißen !).

So, if you got the chance to get some acetone (perhaps from the guys that do "plastic modelling" in 1:250 or so) ... try it ! If not, stay with your CA or epoxy when you´re satisfied. No need to get "UHU" or "Pattex" stuff !

Hope this helps a bit.
Greetings, Jan-Nicolas

[Arvad]

Hi,

Well to put it in another words - ask you wifes... Acetone is also used for removing nail "varnish"? (the nail paint the wife pays I dont how much for..)

Hope this helps..

Arvad

[Drobie]

Originally posted by Arvad

Well to put it in another words - ask you wifes... Acetone is also used for removing nail "varnish"? (the nail paint the wife pays I dont how much for..)Arvad

I guess ACETON is just Acetone. Never thought about using it to join ABS. I'll have to try it a couple of scraps.

[Drobie]

Well I tried acetone. Works OK for small pieces, but no way could I join a hull using it. Set time is single digit seconds.

Probably great for windshields, wings and smaller parts.

Might even be a way to do ride pads, but you'd have to be quick to make sure all surfaces touch and stay together.

[AndyKunz]

Doug,

Most solvents like this are actually blends of various solvents with varying properties to effect the desired result.

Acetone, IPA, MEK, & Toluene are typically mixed in different amounts to change the bonding and drying properties. For instance, IPA will slow down the drying, and toluene will increase the amount of melt.

None of them is particularly good for you, but acetone is produced by your body in small amounts.

Andy