Questions tagged [casting]
32 questions
6
votes
1 answer
What's the point of draft in sand casting
I know what pattern draft is and it's usefulness in removing castings from rigid moulds. That's the definition you can find anywhere.
My problem is when you sand cast. Sand casting is the most common amateur metal casting technique, with lots of…
Paul Uszak
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3
votes
1 answer
Pouring aluminum into disks or cylinder shapes?
Is their a good method of making aluminum disks from molten aluminum?
I have a large amount of aluminum castings and I would like to make rounds that could be chucked into my lathe and used to turn parts. Typically the castings are reduced to molten…
Rick
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3
votes
0 answers
Joining zinc components
I have a zinc lock box that looks like this:
where there's a top and a bottom part. Notice that there're two interesting features (circled in red):
After cutting it up slightly:
The section view (of the right feature) looks like the…
John M.
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0
votes
2 answers
Problem in casting with aluminium? (misrun?)
I'm trying to cast an impeller but I have a problem. The melted aluminium doesn't go inside the thin parts of the mould. Here is the mould before casting:
After the casting:
After breaking the mould:
As you can see the vanes of the impeller are…
Roh
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0
votes
1 answer
How to cast and mold melt plastic to a shape and design you want?
I am trying to use plastic for a cheap and easy casting but I'm having trouble in molding it to any given shape. I'm trying to see if I can make a spark plug and want to cast out a model for measuring and getting a feel for the design. But I never…
LostPecti
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0
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1 answer
How to chose production process of copper electrical connector, Extrusion vs Die casting
I want to get manufacturing done for custom designed copper connector which I am planning use it in my home automation project. I created design of the connector in Freecad . I have exported the designs in PDF and published to local…
Xinus
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