an indian man sharpening a knife on rotating whetstone

abrasion abrasive belt bicycle blade brick burr business caution coupled dangerous diy doublesided grinder grinding grindstone hand hazardous hold hone indian japan japanese knife knifegrinder man manual mobile neck paired peddle portable red repair rubber rubstone rural scissor sharpener sharpening small sparks steel stones striker tool twosided twoway water wheel whetstone whetstones young