DIY hand grinder protection tool, safe and convenient

Useful tools your family should have:
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Handheld grinders are very popular tools in every family. It is a useful support tool in repairing your household appliances.
However, their use sometimes encounters unsafe incidents for users. We have created a safety device that attaches to the hand grinder to make use safer.
The video is a simple process of creating that device that you can do at home. Please watch the entire video to see that.

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Pls add dimensions of metalic plate. Thks

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Safe tool size for hand grinder