______________________ are used for cutting large, fixed diameter holes in a wood or plastic.(a) Carbide insert bits(b) Wood auger bits(c) Hole saw bits(d) Wooden bitsI had been asked this question by my school principal while I was bunking the class.The doubt is from Drilling and Road Making Equipments in portion Construction Equipments of Construction & Building Materials

______________________ are used for cutting large, fixed diameter hole

1.	______________________ are used for cutting large, fixed diameter holes in a wood or plastic.(a) Carbide insert bits(b) Wood auger bits(c) Hole saw bits(d) Wooden bitsI had been asked this question by my school principal while I was bunking the class.The doubt is from Drilling and Road Making Equipments in portion Construction Equipments of Construction & Building Materials
Answer» Correct choice is (c) HOLE saw bits Easiest explanation: Hope saw bits usually cut up to a depth of 18 mm. They are best used in a POWER drill at low speed. Their sharpening can be DONE with a fine triangular file. To cut large hole combination holes of bits with the NUMBER of different size ROUND saw blades are used.

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