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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
I use a propane torch to burn off the material. If I wind up heating a drill bit until it glows red, I quench it in water to retail all its hardness. Otherwise I let it air cool. If this happens often consider plastic-specific tools and techniques, and avoid getting melted plastic on steel.
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