Answer :
Final answer:
The best grinders for sharpening worn edges on cutting tools are belt grinders and bench grinders, which offer control and accuracy with their continuous, stable abrasive surfaces.
Explanation:
The grinder type that is best suited to sharpening worn edges on cutting tools is typically a belt grinder or bench grinder. These grinders provide a stable, continuous surface that allows for control and accuracy during the sharpening process.
A belt grinder operates with a looped strap of abrasive material that runs at high speed. The tool edge is pressed against this moving strip, wearing away material and sharpening the edge.
A bench grinder uses a rotating wheel typically made of abrasive grit. Here, the tool edge is held against the spinning wheel, grinding the tool back to sharpness. These are especially common in workshop settings where larger or heavier tools may need to be sharpened.
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