3 Pieces Graphite Crucible Ingot Mould Stir Rod Kit, Including 1 KG Clay Graphite Crucible for Melting, 1 KG Graphite Torch Smelting Casting Ingot Mold, 1 Graphite Stir Rod Skimmer

So I recently got into precious metal refining. Now that I have all this nano pure metal powder, I needed something to turn it back into a solid piece and be able to stamp it. I've been using a friend's vacuum furnace, but I don't always have access to that device so I needed something I can use myself. I did a bunch of digging and saw that I should grab graphite molds and found these.When they came in, I couldn't believe how light and how small it truly was. When it said 1kg in size, I thought it would have the same capacity as my 1 liter containers, but I was obviously wrong. It is about the same size as an ~8 oz water glass. I also thrown off because I was able to see the machined tracks in the mold pieces but was told that was normal for this type of piece.Even though I was apprehensive, I heated up a sample of 100 grams of pure silver powder and poured it into the 1kg cup and then transferred it right into a cold water bath. The mold seemed completely unaffected and the sample came right out.It was much easier than I expected and I was actually impressed that it didn't affect the mold at all. These graphite molds work exactly as expected. The smelted sample came out pretty smooth visually, but not as good as a sintered sample. Definitely passable for small gifts where you can stamp a message.For anyone that works with or collects precious metals, this is a must have. It's a relatively inexpensive way to work with powdered metals. I'm sure you could melt solid scrap directly in these molds itself.My next test is to see how these work inside a vacuum sintering oven once I find a piece to sit on top of these to compress the powder samples (although I was told there was a way these may work without that). Here's where I feel the clearly machined face may reflect in the piece's results, but for normal smeltering use, these are rock solid molds.

This kit is solid for anyone looking to get into smelting. The stir rod is a standout—sturdy and well-made, perfect for stirring molten metal. I’m excited to fire up the furnace and put it to use!However, a few things to keep in mind: the crucible doesn't have a coating, so the graphite rubs off on everything. Be sure to handle it with gloves, or you’ll end up with stained fingers. The crucible also lacks a pour spout, and the top isn’t completely smooth, which might cause some issues when pouring. Ideally, it would have included tongs to safely handle the crucible.Overall, it's a good kit with a few minor drawbacks, but it’s still a great value for anyone eager to get started with smelting!

This graphite crucible is perfect for casting my own design. I have delft casting clay that I will be using to create molds for casting with sterling silver scrap that I have. One modification that I like to make to the crucible is to use a round metal file on the inside rim to create a pour spout which makes pouring the molten metal more accurate and has less of a chance of making a mess. The stir rod is extremely useful for making sure that all the molten metal's temperature is evenly distributed and homogeneous. If your pouring molten metal into a mold it's very important to heat up the mold before the pour because pouring molten metal into a cold/room temperature mold will cause inconsistency in the final product and could crack or damage the mold itself. I would recommend this product.

These work very nicely for their purpose, but they do not have any sort of coating so the graphite rubs off on everything it touches. the stick is also very fragile and arrived broken in 2 pieces, but it still works!

This is a nice kit for melting and casting metals like silver and gold. Works great with a gas torch.

A very functional graphite crucible and ingot mold. Not the highest of quality but nevertheless quite suitable for many needs. It's a small crucible so it's a good size for small castings. It would be nice if the crucible had a pour spout, but that's not a show-stopper especially for a small crucible like this one. The ingot mold is a nice addition for me as I have a large quantity of silicon bronze swarf (from machining bronze) that can be melted down and cast into ingots. The graphite stirring rod is very fragile (as you should expect from a graphite rod) but quite functional.

This is exactly what it says it is. A very small crucible and mold, perfect for small jobs. Please check the size and capacity of the crucible is what you want.Also, please don't forget to season the crucible and mold before you first use them. There are plenty of videos on youtube on how to accomplish this.

If you do metal casting, all of these bits should look familiar to you. It's an ingot mold to pour molten metal into, a stir rod that can withstand the heat, and a crucible for use in your furnace. They all seem about on par with any other graphite tools I've ordered off of Amazon. Happy customer.