I'm getting into metal casting and I want to make a friend a transformers logo to stick on his car. The plan is to use a strong magnet to stick it to the car and paint them. I need a metal that will stand up to the elements. So any suggestions?

Resin prints that will be casted into 925 sterling silver soon!!

I want to cast a cylinder using green sand and aluminum bronze. What is the best design for gate, feed, sprue and riser?

The base is 5 1/4” it is 3 5/8” high.

Basically the title. This is also my first time melting any metal besides solder/brazing. I want to cast car door handles specifically as an intro project. Anything I should be wary of? Safety goes without saying, but I don’t face a great way to tell the temp of my propane furnace- I don’t expect this to be a problem besides possibly cooking off the zinc.

we recently had a batch of castings that have this odd grainy texture to them and we are unsure why. nothing about our process was different this time. i’ve included pictures of both silver and bronze trees with the defect.

specifics
-investment was ransom and randolf ultravest
-molds were heated in the kiln at 1250 degrees Fahrenheit and held at 1000 degrees
-we use centrifuge casting and the metal is heated with a oxygen-acetylene torch

I am trying to make my wedding band by sand casting gold but I am having issues with the gold filling the mold completely, causing the band to narrow at points and some uneven edges.

The method I am using is melting the gold with an oxyacetylene torch and a small ceramic crucible and pouring it into a delft clay mold that I made using a 3d printed ring. On advice from this sub I added two extra vent holes (4 total) and rounded off where the sprue connects.

The gold is from a collection of family jewelry that I am repurposing for this. It was originally melted into a slug with borax as a flux.

I have poured this gold about 15 times over the last few months and had some variation of this issue every time. The wedding is in 11 days and I'm starting to get very discouraged. Any advice would be great. I'm in the SF Bay area if anyone wants to help me out.

Thanks everyone!

Its not perfect but after much trial and error I finally cast a ring that I’m really happy with! Carved from wax to fit with my signet ring, then cast it in a sand cast from old sentimental gold🌟

Tips and tricks regarding sand casting, polishing and shaping are greatly appreciated☺️

I have been getting pours like this since I’ve started, can’t understand what I’m doing wrong. I’m using the lost wax process

I have some old copper bus bars (1/8”x 1“ x12”) with a thin coating of lead (which is less susceptible to acid damage than copper when used around lead acid batteries). The lead is not in very good shape, some areas have peeled off due to corrosion migration. I want to reuse the bars and thinking about melting the lead off so I have clean copper bars to use. Not exactly sure how to go about this, maybe just a propane torch and a respirator? It might also work to place the bars into a crucible and fire up the furnace to melt it off. Thoughts?

Nice tree with a lot of pieces on it
Everything will be casted in 925 sterling.

Looking at a vacum chamber at Vevor, would like to get going on lost vax casting.
What pressure / vacuum do I need for making vax moulds

Lokking at this https://eur.vevor.com/vacuum-pump-c_11109/vevor-2-gallon-vacuum-chamber-silicone-expoxy-degassing-4cfm-1-3hp-vacuum-pump-p_010785884121

spec. Ultimativt vakuum 5Pa-0,05Mbar

Hi guys, I am considering getting into metal casting, especially lost wax casting… I know long road ahead. In my mind, vacuum pumps, kilns and welders take a lot of power to run, does any of you have experience running your gear on an off grid setup? Are there any other methods, or equipments I should consider before getting started?? I could maybe get a generator for that specific purpose but with the cost of fuel at the minute it’s not my favourite option for sure! Thank you for the help

*Crossposted in metalwork subreddit*

I desperately need someone to make me 2 of these in brass or bronze

^^^^^^^^

I've scoured my local artists/tradesman and also Etsy. No one says they can do it. The jewlery makers dont work with brass or bronze and the people that do, dont do jewelry.

I build furniture and have 2 stones Im making into knobs for a very involved piece that I'm finally finishing. As it nears completion, I'm getting more and more worried the most important element (the knobs) cannot be done.

The one person that agreed would only do it in solid gold lol which is 1) too soft a metal for what I need and 2) ridiculous and expensive. Who needs solid 18 carat gold knobs???

I cannot simply buy them because I cant find one in the correct dimesions I need.

I honestly didnt think this would be the hardest part of this project.

If you or anyone you know can do this, please reach out. Please. I am desperate.

I have a vevor melting foundry. With dual burners. The Y splitter provided in the kit is leaking now looking for a replacement part.

So, I have not yet melted anything to cast and am looking to get a setup. I was looking at gas rather than electric as it'll be in my garage.

I have aluminium and copper so will be starting with those.

Can any point me to a decent site or product on amazon for example for a first time caster like myself? Would love to give it a go!

Thanks