Tip #93
How to Drill Holes At Compound Angles
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Operations:
Let us drill four holes which allow legs to tilt at equal compound angles (20-degrees).

1. Prepare one piece of stock 3/4" x 12" x 12", and another 3/4" x 3" x 12".

2. Make four punch marks at the intersections of lines drawn 2" from each edge of 12" square.

3. Set table at 70-degrees.

4. Set miter gauge 45-degrees to left of 90-degrees and place in right hand table slot.

5. Secure a 3/4" spur bit in chuck.

6. Loosely clamp the 3" wide stock diagonally across the lower right corner of the table.

7. Place 12" square stock on table, marked side up, and bottom edges butted against miter gauge and clamped stock.

Fig. 2 Click image for larger view.

8. Determine the depth to set on dial by holding one edge of square stock against bit extended to table surface. Set depth gauge dial at "0" when the spur of bit is just short of bottom surface and lock.

Fig. 3 Click image for larger view.

9. Position punch mark in upper corner under spur of bit by moving miter gauge and angled stock. Lock miter gauge with Allen screw in bar and tighten C-clamp.

Note: Larger stock can be positioned for compound angle drilling by using miter gauge and angle stock as guides on the upper half of table. In such case, it is advisable to clamp stock to table. The same type of drilling, in large stock, can also be readily done with MARK V set in Horizontal position.

10. Drill holes at four punch marks. Insert short sections of 3/4" dowel, if available.

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