2 Pieces Graphite Ingot Mould Crucible Mould for Casting Gold Silver Metal Aluminum Copper Brass Melting Refining(4 x 2 x 1 Inch)

They come as advertised and do their job. ThatS all I can ask for, and all I want. Just put in oven at 500°f for 30 mins before use to remove all moisture potentially still in the molds. Treat them well, they will last you many, many projects to come.

These last pretty much forever with aluminum, copper and bronze give you probably around 40 ingots each, and I did make some cast iron ingots, but you’re getting near the limit of graphite, as it begins to oxidize quickly at those temperatures around 2500°F. With cast-iron I could tell it noticeably degraded it after two ingots.

Work pretty well. Make sure you preheat them properly

I've seen few reviews about these cracking after a few pours. I'm new to this, but I'm wondering if users are preheating before pouring. That seems like it may be a reason for the cracking/breaking. I consider these "consumables" and will need to be discarded or crushed into graphite powder at some point. I'm just not sure what's considered a reasonable amount of "consuming". The picture with the copper bar is after about 5-6 pours and it seems to be working fine for me. However, I'm not sure what the expectation should be. Likewise, I'm not sure what the expectation is for the price point. Seems to be a decent price for what I've found out there. Explanation on the mold with the broken corner: It was my first pour for aluminum. I did 2 copper bars and they came right out just fine. They basically slipped out. However, when I went to dump out the aluminum, they didn't want to come out. One came out after a few taps. The one in the mold with the broken corner was being really stubborn and I got a bit rough trying to get it to release. Well, the picture shows what happened. I've done aluminum pours since and I think it was because I didn't let the first ones cool long enough. One other thing I should mention: These are listed as 1 kg molds. That may be true for gold or silver (I don't know). However with copper, when filled, will net about half a kilo (or a little over a pound). Even less for aluminum. Not a complaint. Just something to keep in mind if you're not already aware of that fact. Overall, I'm fine with them. I'll use the one with the broken corner for any remaining copper left over after I fill any other molds I have or get. I can always remelt it another time.

These have held up great and make nice little ingots. I've poured lead, zinc, brass, aluminum, and copper into these without issues. I've even dropped them and they've survived.

Not at all what I was expecting, they are very small. However I am sure they will do what they are intended to do. I will at least be able to create a few brass bolsters and butt pieces for knives, but I will be limited due to the small size of the ingots.

These are for melting larger metallic items that are not easy to melt that size unless you have a welding torch

I used this for my silicone casting and it worked perfectly! It was easy to take out the silicone mold by pressing on one end with a butterknife and leveraging it. I definitely recommend it for artists who get annoyed with making silicone mold housings that never seal.. or cure. Just make sure to wash it beforehand to get the residue off the metal. You can also pigment your silicone, but it looks like the residue washed off pretty well and I won't need to pigment my next silicone mold.

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These are the perfect size for what I do. Very durable and can take the heat.

Great molds hold up well. have four of them on the go, definitely buying again

works good just takes a few mins for ingot to release as it needs to cool some first

Loved the cooldown