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just wondering how come my expoxy putty doesnt seem to dry??
it keeps cracking
How the hell are we supposed to know what you're doing wrong? Though most are similar, we don't know which epoxy putty you're using. You haven't even told us if you've mixed the two parts together. For all we know you might be using modelling clay.
Some details would definitely help
sorri.. its my first time im using this stuff and i seem to be screwing over my hive tyrant cause i dont know wats wrong,
the thing im using is called milliput(the superfine/white ) and its made in the uk, so i hope its not too bad plus it states its a two part expoxy putty... but the thing is that its white so the two parts look identical and im not sure if ive mixed them long enough for it to work and possibly the reason for my thing to go a bit weird cause i have no idea which is which. plus is there a rule of thumb on how long to mix them cause i onli mixed them for about 1min
plus any tips on making it dry quicker
I imagine it would say on the packaging how long you're supposed to mix... I would just use green stuffOriginally Posted by Subice
Gloria Imperator, The Firstborn Stand!
- 2000pts Inquisition, 2000pts Vostroyans, 3000pts Vampire Counts, 1400pts Daemons, [WIP] 2500pts Death Guard
I started using some Epoxy today as well, just trying to get the hang of it. The stuff I use comes in two colored liquids, a clear (the base) and a yellow (hardener). If it's cracking, you're probably letting it sit in too hot of places, or you are using an incorrect mixture. Usually you should go for a 1:1 for basic putty, however, if you are trying to get something to mold with, use a little less hardener, especially if it is becoming brittle. Make sure that it is thouroughly mixed, if there is an area that is mostly hardener and not enough epoxy, it shouldn't work correctly. My best guess is that it would become flaky, or maybe as you are seeing get cracked.
These were all things that I've learned online about it, before trying to use it myself. So far, I haven't made anything, as I'm just trying to get used to handling the stuff effectively.
OK miliput 101:
Firstly why milliput:
GS is fine but as it cures it tends to pull its self back towards a ball and shrink slightly. This is hardly noticable unless you are doing something inorganic with straight lines (like a gun) - for a bad example of this look at this:
see her coat, that was done with GS, when it was modeled it covered her dignity, however over the week or so it took to fully cure (not just the 24 hours it took to dry) it shrunk and removed her dignity
So Miliput has its uses, it is also more durable than GS, it responds better to drilling and sanding.
Some modelers actually blend the two to get a substance mid way, this is fine, mix up some GS then mix milliput, when they are both mixed, mix the two together. you can use more or less of one or the other to get its properties to the fore.
Miliput comes in several grades, the most commonly used by modelers is the standard, which is used for bases and filling sculpts before putting a top layer one, and as you have said super fine. The problem with super fine is, as you have identified, the two component parts are pretty much the same colour, you can not tell how mixed they are, the note that accompanies the box points this out and tells you to mix for 15 minutes, do this, also dont try and knock the ratio about unless you are very sure of yourself.
I strongly suspect you have not mixed the two parts together sufficiently
hope that helps
Everything you have been told is a lie!
Much better. Sorry about being rough. I find that people listen the first time if I am.
Ok. Straight from http://www.milliput.co.uk/how.htmI've never used Superfine White, only Standard Yellow/Grey so results may differ. It says to mix for 5 minutes. I usually work the putty for a good 10 minutes to be absolutely sure. For me mixing is a process of flattening the blob, then folding it, then flattening it, etc...like kneading bread dough in your palm. Make sure you mix all of it including the edges of the blob. People usually forget those. About 60-70 folds is pretty good (and usually tiring if it's a large blob). As you're only mixing for about a minute it looks like you're getting an uneven mix and simply a matter of mixing it more thoroughly for longer. That should fix your problem.Using Milliput for the first Time?
If you have never used Milliput before we suggest you make yourself familiar with its behaviour before attempting a repair.
Take a small slice, say 1/4", from each part, mix them together for 4-5 minutes and roll into a small ball. flatten it to shape of a coin and observe it over 2 to 3 hours. Note how sticky and adhesive it is when first mixed. After an hour it becomes rubbery and less tacky. In 3-4 hours it becomes quite hard and tack free. Overnight it becomes rock hard.
Instructions for Superfine White Milliput:
It is very important when using this grade of Milliput, because the sticks are virtually the same colour, that you mix the two parts for at least five minutes.
I'm not too keen on Milliput. It behaves like terracotta clay and will tear rather than stretch. It also doesn't stick as well as the advertising led me to believe. But water seems to dissolve it while still soft and drops can be applied to Milliput to help when you're smoothing it.
Good luck on your project.
P.S. The hardening is a chemical reaction. Heat will speed up the process but I usually don't touch it for 24 hrs.
Last edited by CBrate; June 26th, 2006 at 14:06.