Can you freeze dry things at home?

Can you freeze dry things at home? Freeze drying works great for fruits and vegetables, but unlike other options, it also perfectly preserves meat, fish, dairy, eggs, ice cream, and even fully-cooked meals. Not only will the food you freeze dry at home look and taste better than store-bought freeze-dried food, it’s much less expensive! […]

What is the purpose of surface hardening?

What is the purpose of surface hardening? Surface hardening, treatment of steel by heat or mechanical means to increase the hardness of the outer surface while the core remains relatively soft. What is laser surface hardening? Laser hardening—also referred to as laser case hardening—is a heat treating process used to improve the strength and durability […]

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