1/4in. Dif.

MACHINE PART LAYOUT : BLUEPRINT/DRAWING AUTHENIC ASSESSMENT PART 2

2" 2"

2"

HOLE A

HOLE B

By INSTRUCTOR; MICHAEL HARDING; Workforce Development CCBC

3. Center punch intersection for both holes and prepare to drills holes according to safety precedures.

4. Drill 9/32 thru for hole A and 9/16 thru for hole B

5. Tap hole A with 1/4 and hole B with 1/2; both shoould be standard #20 taps and must be at a precise 90° degrees from base.

6. Hole A is countersink to 3/16; hole B is counterbored with 3/4 straight bit to a depth of 3/8 inches.

7. Note by; L shape arrow at right bottom of base indicating all edges are to be bevel on both sides aproximately 1/16 hold.

6"

INSTRUCTIONS

1. Aquire metal stock bar: dimension; 6in. X 4in. X 1in. And metal paint surface with red color.

2. Strike and scribe centers vertical and horizontal on the face as shown in figure.

8. Be sure all surface areas are clean of any debree and rough edges by filing with very fine teeth and then present to instructor for assessment.