Aluminum Casting Fail - How Not to Cast a Slingshot From Aluminium Cans
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- čas přidán 30. 01. 2017
- Hey everyone! Here's a video I filmed a few weeks ago before a snowstorm blew through my shop. I was hoping to cast a slingshot with aluminum, but it didn't quite work out. This is the second time I've used this type of foam, and both times I've had the same failure, so I think I'll stick to lighter foam. If you guys have any other suggestions, please let me know!
Thanks for watching and enjoy!
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New P.O. Box!!
Nicholas Tomihama
P.O. Box 354
Camas, WA 98607
You are so talented it is a pleasure to watch. Thanks.
This doesn't seem like too big of a fail. Granted, the casting got a little messy but you cleaned it up really nicely!
No distracting hand waving, distracting music, annoying unnecessary gibbering, time wasting. THANK YOU.
Nick, when I do this 'lost foam' casting, I use very light material like is used to pack around electronics. I buy a sheet at Home Depot that is 1/4 inch thick and I layer the material, tacking with glue. I also dampen the sand sonthat the heat is focused on the foam, and the steam adds to the removal of gasses that can collect in the final piece. Good attempt. Keep at it! a friend of mine uses foam board from Walmart.
good point, i thought the sand was supposed to be damp as well..
I think you did great with what you had. Good on you for not giving up, and I'll bet there's a kid out there or someone with smaller hands than you who could fall in love with this.
I've been waiting for a slingshot video love it looks good 😊☀️🌵
Sweet another video keep up the great work, are you going to have more black smithing videos soon.
great video
It would help a lot if you waited for the metal to cool down more. like lead, and some other metals, aluminium is awfully brittle when it is near its critical temperature. You did a great job never the less, very shiny!
Issac Weld, you may be onto something!
Will waxed- on foam straws help the casting at the bottom, I don't see that they were really needed in this case?
How did you ever dream this would work??
Dry sand; and look at all the gas it makes. Pourous metal full of foam gas??
I'm certainly no expert on the subject, but could the material you molded it with be a factor? Most people I know use a much more dense and packable material, not as loose as sand.
could you detail what you use in this pour?
Maybe it would be better if you lay it down horizontally rather than vertically. You'd use less sand. Perhaps include an inlet on both ends to allow air to escape or pour from both sides alternately.
Hey, what did u use as a crucible?
Beautifull....
What type of material is that which hold aluminium , why it didn't melt by heat of aluminium . Wherr can I find that thing.
that wasn't a fail that was awesome a maori club with tis method would be awesome to! anyways great job!!!!!
You should try to wrap the foam prop in some aluminum foil so that the sand doesn't collapse as it burns.
You have to use damp green sand and compact it on your template. Like this the sand wont move and change the template form when the template will melt. I also think you do not use enough aluminum. It's never lost anyway as you can melt it again and again !
Oh and please, play it secure : use protecting gloves on every machines you use. You dont want to have metal shards in your fingers and hands :)
Have fun for your next tries !
Could you try casting a riser for a takedown pvc bow?
It may have to be a shorter version.
How could this have been avoided?
Can i use cement for molding sand as an alternative? Thank you
@ Nicholas Tomihama
This is exactly what I was curious about, just making a "semi-permanent" mold out of concrete (well, mortar, probably a 2 or 3:1 sand:cement mixture, very fine sand) to make >1 casting, hell even for making a single casting IF it's a 2-part form it'd be far better I'd think (although after watching this video, and seeing how the foam just evaporates, I honestly can't see ANY rationale for making a "real" form, *ever*, when making single-product runs...i.e., the ONLY use that making a solid form/pattern, and using the 2-part container, is so you can re-use the form/container, right? IF you're just looking to make a single unit of something then you shouldn't bother with the 2-part boxes and should just do styrofoam right?)
Also Re aluminum sources & quality.....are you able to clarify/expand a bit on:
1 - whether there's better sources of aluminum to use than cans (IE maybe shower-railings have a better alum-alloy or something?), and
2 - I notice you don't seem to "clean"/process the aluminum while (smelting?processing?) it, have you found it to not be worthwhile or is it that you just weren't doing that in this vid? I've seen/heard things about "de-gassing", have seen people use a scoop to run-across / skim the top of the molten-aluminum, would imagine it'd be wise to do *anything* to up the strength if the final-product is anything besides decoration!
A+ stuff thanks a lot for posting :)
@@cerberusbonsaiarboricultur774 cement tends to crack and pop when molten metal lands on it. be careful if you try that. A pop could send hot metal flying every direction
hey nick can you make an vid about making easy trowing knife's
without power tools
why is this a fail?
how many cans needs
Sounds like some aquaponics going on in the background.
Why did it break?
il Barone Rozzo My bet is on gasses from the burning foam or even just sand got in there.
congrats you make a ingot