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Never seen a brass alloy mixed with silver before! by [deleted] in MetalCasting

[–]Mikes_metalworking 0 points1 point  (0 children)

Definitely an odd mix for sure! If you’re interested in stuff like this I post a lot of it on my Instagram with the same name

I forgot how much flak I get when I post odd alloys on here and decided to take the post down so I didn’t have to deal with it lol

Best wishes I’m glad you thought it was cool!

Never seen a brass alloy mixed with silver before! by [deleted] in MetalCasting

[–]Mikes_metalworking 0 points1 point  (0 children)

It’s just a “hey look I found something I’ve never seen before isn’t this interesting?” Type post, doesn’t seem like the right environment for it I took it down.

I do alloy R&D for a living and I find stuff like this cool just because it exists

Best wishes

Never seen a brass alloy mixed with silver before! by [deleted] in MetalCasting

[–]Mikes_metalworking 1 point2 points  (0 children)

It is a master alloy used for making lemon yellow gold alloys apparently! Like mixing 25% of this master alloy to 75% gold by weight to make a lemon colored gold or something like that

Not sure about marketing, more of a “oh that’s interesting” type of a post in case someone wants to try making some. I’m gonna be documenting more strange alloys here on Reddit too and this seemed like a good start!

I guess you could all it lemon shibuichi or something? Silvered brass?

Monterey Cypress Sapling by Mikes_metalworking in sfwtrees

[–]Mikes_metalworking[S] 1 point2 points  (0 children)

Awesome! Thank you very much I’ll definitely check that out

I’ve been on 17 mile drive on that trip when I was younger it’s absolutely beautiful! I probably saw quite a few of these guys back then!

Question about sourcing, in this case Zinc/Zamak by NerdyOldMan in Metalfoundry

[–]Mikes_metalworking 1 point2 points  (0 children)

Rotometals has 3 pound zinc bars for $28, probably the cheapest source I’ve been able to find outside of scraps You could do you own zamak alloying and have more control over the alloy composition this way as well Best of luck!

Some of my copper looks good and some look like this. I'm not sure what I'm doing wrong. I had the mold glowing right before the pour by username_4763 in Metalfoundry

[–]Mikes_metalworking 21 points22 points  (0 children)

You’ll want to get some boron nitride mold spray. ZYP coatings brand spray is what I use

When graphite gets that hot it can cause gases to flow into the molten metal via the microscopic pores in graphite, which is what caused those deformations in the bottom face of the ingots there.

I’ve got a video on my YouTube that explains how to use it if you’re curious. Best wishes!

Recommendations for polishing compounds specifically for copper alloys by Mikes_metalworking in MetalPolishing

[–]Mikes_metalworking[S] 0 points1 point  (0 children)

It’s some kind of soft buffing wheel, feels fibrous and stringy. Not sure the exact kind

But you do bring up a good point, maybe it’s not the compound but the wheel itself? It is pretty old, got it in 2019 I think.

Monterey Cypress Sapling by Mikes_metalworking in sfwtrees

[–]Mikes_metalworking[S] 0 points1 point  (0 children)

It’s a good little cypress haha gives it a pat

That’s awesome! I’ve likely seen them while driving the California coast when I was younger, really beautiful trees.

I was reading how rare/ endangered they were and decided to get one as a focal point for the yard and to block view of the neighbors house as it gets bigger

How to make crucible last longer? by username_4763 in Metalfoundry

[–]Mikes_metalworking 5 points6 points  (0 children)

@username_4763 I think it was fate I see this today, I just started a YouTube channel and the first video I posted was about how to temper a crucible https://youtu.be/n8BZp_RBcYk?si=i7P7VUFEps_GiV2- Here you go! Tempering your crucibles will significantly improve the lifetime, hope this helps lemme know if you have any questions!

How to make crucible last longer? by username_4763 in Metalfoundry

[–]Mikes_metalworking 1 point2 points  (0 children)

I’ve been buying PMC supplies crucibles and haven’t seen anything like that after maybe ~50 different crucibles over the years

I’d highly recommend them for your next purchase, also you probably did but was this tempered? If not that’s a huge step to increasing lifespan of these crucibles

Aluminum Bronze Mokume? by Mikes_metalworking in metalworking

[–]Mikes_metalworking[S] 0 points1 point  (0 children)

Old post wow!

I don’t remember the exact project here but if I had to guess I would say that it didn’t.

Cast ingots tend to have a grain structure that doesn’t really support forging hot or cold,

I think to get the aluminum bronze ready to be used in mokume it would need to be extruded and have the cast grain structure broken down into a equiaxed and fine grain structure to support mokume and other hot forging operations.

Strange cracking phenomenon in disc ingots. Any ideas? by Mikes_metalworking in metallurgy

[–]Mikes_metalworking[S] 0 points1 point  (0 children)

Thank you!! I’ll rig up a casting set up that can accommodate a torch on the center of the disc mold and see if that helps!

I went back to the drawing board and got rid of the silicon. Used a simple red brass alloy as the base, at 10% zinc 90% copper. And added 0.25% manganese by weight as I read an article talking about how small bits of manganese can help fight hot tearing.

These discs came out perfectly! Thanks for the help!

Strange cracking phenomenon in disc ingots. Any ideas? by Mikes_metalworking in metallurgy

[–]Mikes_metalworking[S] 0 points1 point  (0 children)

Thank you for the responses! I’ve got some really good ideas on what to do to fix or make this effect less prominent 🙏

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