Bayview BOOM

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About Bayview BOOM

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  1. Bayview BOOM

    How to Harden Tin/Bismuth Alloy?

    Your question is vague. It's a widget. Does that help? Of course not, cuz what matters are the specs, not the name of the object. If i said "a door hinge", then that still wouldn't help. What matters are the specs: weight, torque, impact, etc. What particular specs are you looking for? It's a bracket that holds an object weighing about 1/2 lb. It needs to be hard enough that it won't crack or deform when dropped. It's coupling has to mate with the already-existing coupling on the object that it's supporting. It will include bolt holes to mount the object. It sounds like what you're really doing is questioning my overall plan, to cast a metal part. Fair enough, but i'm not seeking design advice. I'm seeking metallurgy advice. Let's assume casting is an appropriate technology for my application and go from there. If you're not willing to accept on faith that casting a metal part is an appropriate solution to my application, fair enough.
  2. Bayview BOOM

    How to Harden Tin/Bismuth Alloy?

    that's why i'm here seeking info!
  3. Bayview BOOM

    How to Harden Tin/Bismuth Alloy?

    if possible, plz let me know what other specs would help. I've given dimensions, weights, temperature, humidity, and air-salt info, impact info. I understand your points about professional opportunities. Thanks for sharing that. No offense, but not asking for advice on my educational program. Just metallurgy. It's ok if methods aren't conventional. Re expense of materials, as i mentioned above i'm not concerned with cost at this time, just methods and materials. Grateful for feedback. cheers!
  4. Bayview BOOM

    How to Harden Tin/Bismuth Alloy?

    Just a bit of info about the project: We are a nonprofit mentoring org for disadvantaged teens. Our goal is to give our apprentices a taste of professional methods and materials, in a safe, simple way. That's why "low-temp" and "non-toxic".
  5. Bayview BOOM

    How to Harden Tin/Bismuth Alloy?

    i totally understand guys need to make a living! Wish i could help with that. this won't be brought inside on unaverage days, but again, no direct contact with salt or water, other than sea-air. Will not be in direct contact with steel, although there will be stainless steel a few inches away. Many thx for your questions, which help me clarify what i need. cheers and happy new year. Thx!
  6. Bayview BOOM

    How to Harden Tin/Bismuth Alloy?

    many thx for suggestions, i will look into them. my project is more toward the bedframe end of the spectrum, not car engine repair. But i'm interested in options at both ends of the spectrum. no direct contact with salt or water, just the amount salt or moisture that is in the outside-air in San Francisco on an average day. I assumed this forum is for asking questions and sharing wisdom, not a "hire me" website. My bad.
  7. Bayview BOOM

    How to Harden Tin/Bismuth Alloy?

    Thx for suggestions! Re tightening with a wrench: Whatever is the average range for people of average strength, with average consumer tools. I think that narrows it down sufficiently. If you still feel there are totally different metal options at the margins of that range, plz share both options. The similar use-case is steel or aluminum nuts and bolts, but i believe that's neither low-melting-temp nor low-toxicity. Not trying to hire a consultant, this is a DIY project. Thx!
  8. Bayview BOOM

    How to Harden Tin/Bismuth Alloy?

    the cast object will be approx 4" x 1/2" x 1/4". torque: hand-tightening with a wrench, as in nuts and bolts. impact: roughly, dropped from 20 feet while mounted to a 2 lb weight (sorry, i don't have exact force rating) i plan to start with "pure" metal powders or ingot, and combine in the melting pot. i'm not trying to recycle anything. i didn't mention "cheap". i don't know if there are or aren't such alloys in existence. I guess you're saying it's impossible?
  9. hi sorry if non-iron posts are not allowed here. I need a low-toxicity, low-melting point metal (before casting), to cast hardware parts. After casting, the parts must not crack under torque or impact, and should remain hard up to 100 deg C. My plan is to make a Tin/Bismuth alloy, since low-toxicity, low-melting point. I've heard a tiny amount of silver can make this alloy less brittle. Any suggestions? Could be a different alloy, or a hardening process. I'm not committed to tin, bismuth, or silver. But need to keep things relatively low-toxic and low-temp. (home, indoor fab). Need to minimize shrinkage/expansion of cast part. thx!