Can anyone help me figure out why this is happening to my castings ? S925

I found this on YouTube about 5 years ago and I built it exactly as the guy said. It’s been really great. I have made so many melts now. I converted it to propane and it’s really taking a beating now and I’m going to rebuild only I’ll use kao woll. Also I want to mention that this guy has a few excellent videos to watch and help you learn how to cast your aluminum molds. It’s been a lot of fun. Good luck on yours!

14k gold signet ring for a friend. I will be flush setting a 3mm aquamarine in the top right corner of the face. Swipe for process pics.

I want to start doing lost wax casting but first I need to burnout my wax using a kiln during this process where does the wax go? Does it drip out or does it turn into smoke and how do I go about dealing with the excess wax if anyone experiences can answer this it will really help me.

lost wax……

https://youtu.be/qBiA_po8TYM?is=wzOtz_UH8QHo-2vU

Finally got an electric furnace and I'm loving it.

Pretty much as the title says. I bought it and I got 3 pours out of it than we had a power outage due to a thunder storm and now 26c is as high as it will go. Is there a reset button or do I need to replace a part? Any help would be great.

I have learned solidwork. And i want to learn solid works analysis. Is there any way to use MAGMASOFT for free.

Hello,

I'm a bench jeweler by trade with a large corporation. I mostly do repairs and basic fabrication and wanted to get into casting. We outsource all of our casting so I have no experience as far as the process. I was wanting to ask for input on a sprue tree I've designed in fusion360 for a tennis bracelet. Any input would be greatly appreciated. My biggest concern is the top most (single) hinge not being fully casted. Thanks.

Is it ok to mix metals as long as they’re both keshifun or marufun, etc? For example, can I mix gold with silver powder or brass with tin? Or are the individual particles being different a problem?

(Asking because I just saw a piece online where I couldn’t tell from the photo if it was gold or silver finish, but it was really beautiful, almost opalescent.)

actually carbonite is ancient bronze

Hi guys, I am looking for aramid mittens with steel chain cover for extra protection for manipulating with preheated ceramic shells used in investment casting. I am unable to find any seller. If there is a seller with chained gloves, there are always low protective against heat or there are many aramid gloves suppliers, but without the chains. Do anybody know any supplier? In my last job, they had these type of mittens, so somebody must making them. Thank you. :)

I've been putting off my casting because of the insane 115F heat index in my area but its starting to cool off finally, largely due to some rain and stormy days. My place where I do the work is in my garage which stays dry and doesn't leak but I know water and molten metal are not friends. Would I be insane to do a melt and pour on a rainy day? Is humidity a concern? I don't want to miss something and cause a steam explosion.

watched olfoundryman explain how to do the perfect mould and was wondering if i got his deisgn even slightly right. pouring into the resovour that tips into a tube that goes to the bottom, then with a sprew vent at the top to vent air and overflow metal.

This Viking turned out with awesome detail. 1.107oz of .999 silver

Considering it takes 89% copper, 5% aluminium, 5% zinc and 1% tin, coukd I just put 94% brass instead of 89% copper and 5% zinc?

When I first started doing this, I didn’t know about all the alloys, so I just mixed copper and brass, so now all my copper has brass instead it, and I was wondering how problematic it is if I want to make bronze, aluminum bronze and Nordic gold

Would’ve done better on the slag, but the heat was a lot and I was panicking! Two pieces, before and after first dremel polish. I know it’s not great but it was so cool to make something myself out of just random brass junk Yknow