Craft & Design
Steel sand-casting flask

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Sean Ragan welded together his own flask for green sand casting of aluminum. A flask is the two-part frame that holds the sand for this method of casting. His is better than a wooden flask (which can’t handle the high temperature if you accidentally spill some molten aluminum), and his method of construction is quite clever and well documented on his site.

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Becky Stern is a Content Creator at Autodesk/Instructables, and part time faculty at New York’s School of Visual Arts Products of Design grad program. Making and sharing are her two biggest passions, and she's created hundreds of free online DIY tutorials and videos, mostly about technology and its intersection with crafts. Find her @bekathwia on YouTube/Twitter/Instagram.

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