The plastic door number on my flat door was damaged, so I decided to make a new one. I will make it of brass using lost foam casting technology.
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Step 1: Making a Mold
Cutting a polystyrene foam pattern and making a mold
Step 2: Melting and Pouring
Melting and pouring brass. After this step it's time to open a flask.
Step 3: Cutting and Sanding
After I cut several pieces and sand the number, it is ready to be put on the flat door.