Alumilite Super Plastic Casting Resin 28 oz. Tan by Alumilite
|Precio final del producto|
- Rigid urethane kit
- 28 oz. Tan Color
- Extremely durable
- Low viscosity 90 second open time
- High temperature resistant 3-7 minute demold time
Descripción del producto
This 28 oz. package of Alumilite Super Plastic Casting Resin gives users a durable, high-temperature resistant, hard urethane that is manageable at any experience level. It has a low viscosity (so it is very thin), a 90 second open time, and a 3-7 minute demold time.
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The mixed resin has a *very* low viscosity and a lower surface tension than water so early lessons will include not spilling and spotting potential leaks before you pour next time.
The only down side I've come across is that if you don't use it for months one of the solutions can start to form a crust, at which point the resin starts behaving oddly when you *do* start using it again. Some castings I did before Christmas never really cured hard.
So, what have I done with Alumilite?
I needed another set of wheels for a styrene kit that came with four but I was modifying to model a custom 6x6. I glued the styrene half wheels in the kit to a sheet of melamine with contact cement, built a box around them out of foamcore and poured silicone rubber into the result. Once the rubber had cured I had a single-sided mold which I used to cast Alumilite wheel halves that I glued back-to-back for the win.
I needed some hatch covers for a tank I was modifying but only had one left over from a kit. I made another single sided mold and had all the hatch covers I could ever want.
I needed to reinforce the iffy joinery I had used to make a hexagonal jewelry display case. The top and bottom were made from biscuit-joined triangles of wood, but I knew that the stresses and the damp conditions the case would be stored in by its owner would do for the glue in no short order so I cut a circular trough with my router and a trammel point (a sort of large compass) in both hexagonal pieces after gluing them up, drove small woodscrews partway into the bottom so they would provide a mushroom-shaped key for the Alumilite I poured in. The resin set hard around the screws and formed a tight ring holding the joints together. It looked like an ivory inlay. Beautiful and functional.
I needed to find some way of adding magnets to a styrene kit of a monster so I could make its arms and skull-pan swappable to represent two different variants of the beast (it was that or buy two kits and I'm not made of money). I used Alumilite to fill the torso once the two halves had been glued together, and was able to mount the magnets in the solid result. I did the same with the hollow head so the skull-cap could be swapped too. A fun and useful project I intend to repeat.
I've also used the resin to reinforce any number of broken parts that have a convenient hollow at the break. Alumilite isn't glue but can be used to manufacture robustness the original maker should have not cheaped out on.
And providing you use SILICONE rubber for your molds you will have a happy experience with no need for mold release for most applications and you will feel righteously genius-like. If, however, you use a polyurethane rubber you will get one such use, after which the resin will bond tenaciously to the mold causing much swearing and tearing out of hair and you will feel like a right twit. Ask me how I know this.
So, if you are a newbie to casting and mold making, I suggest you use the user-friendly Alumilite silicone molding rubber too.
A really great product.
One thing to watch out for: It appears that the resin is partly thermosetting - the hardening process is exothermic (it gets hot) and the heat is needed to help the polymerization happen properly. Casting very thick pieces can generate enough heat to cause cracks (and give you an unpleasant shock if you pick it up too soon). Casting very thin pieces may mean they never do set properly (I tried to make H0 rivets once...).
Alumilite is low-odor, but you have to be an adult about using it and it's best to keep it, like all chemicals, away from the kiddies.
Oh, and to my mind this is how you get the most from your 3D printer - you make your first whatever-it-is on the printer, then you make a mold of it and cast fifty more in the time it took to print the original. Result.
[EDIT 6/13/14] I recently discovered the sill of my house's back door to have extensive water damage that had rotted out two large divots around four inches long and about an inch deep, one out to each edge of the sill. I could not replace the whole sill for various reasons, so I cleaned out the rotted wood with a chisel, dammed the ends with duct tape, sealed the wood/tape join with a small amount of 5 minute epoxy (otherwise the Alumilite would find any small gaps and leak out before it set) and filled the holes with Alumilite resin for a fast, strong repair. worked like a charm, and when sanded to profile and painted was indistinguishable from the wood and, more to the point, it won't rot out again. The large volume of resin *did* get very hot as it set though, which had the beneficial effect of making it set faster.[/EDIT]
[EDIT 3/4/2017] Dressing the tree last Christmas my wife dropped one of a set of four glass snowman ornaments. The ornament was of the glass bubble sort and had a hole knocked in it with a network of cracks threatening to disintegrate the entire ornament.
I carefully applied tape to the cracks and ran in a small amount of Alumilite, swirling it around the area that was broken to stabilize it with an inner shell of resin. Then I mixed up a new batch, poured it in and quickly taped up the hole, then repeated the swirling technique with the taped part held downward.
Some resin leaked past the tape in places and the result at the back wasn't pretty, but from the front the ornament looked good as new. I stripped off the tape, rinsed the ornament carefully in warm water, carefully blotted it dry and returned it to the tree decorator. [/EDIT]
Alumilite Casting Rubber
More plastic mixing cups
As with most things, I didn't fully read the instructions completely through before trying it out. The first pour hardened in the cup because I delayed too long. This product sets hard very quickly; within 3 minutes. Prior to 3 minutes it flows very well and filled my mold and self-leveled. I was doing very small pours. For a larger molded item I could see needing a product with a long working time.
I am very satisfied and would recommend the product.