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Suspension System.

Aluminum bars and a compression spnng allow the hood to nde over a workpiece.

making the

Mounting Assembly

NOTE: START WITH * 3" • 10" BLANK

Ve'-DIA. HOLE. - V DEEP (TOP SIDE)

The hood you just completed Ls suspended above the saw blade by the mounting assembly. However, the hood also needs to be able to ride over the top of a workpiece and then drop back down smoothly.

Flexible Connection. For this to happen, 1 attached the hood to an arm made from conduit with a "suspension" system. You can see how this is accomplished in the photo at right. A set of four aluminum bars connect the hood to a pair of mounting blocks that clamp onto the conduit arm.

Mounting Blocks. The hard-wood mounting blocks need to grip the conduit arm securely. To make this work, start by cutting an oversize blank to the size shown in the margin drawing at left. Then you'll need to drill a few holes.

The first hole is sized to allow the conduit to pass through easily (mine was l¹^" dia.) The next hole to drill will be used for a carriage

V4--DIA. HOLE

tv-pia." hole ,

bolt, washer, and knob to hold the block in place. A third hole is a storage spot for a pin that can be used to hold the hcx)d above the saw table, as in the photos below and Figure 2. A final set of holes is used to attach the aluminum bars.

The next step is to assemble the block on the conduit. For this, I cut the block in two. A pair of screws runs through the front of the two blocks to hold them together with a V gap. Then when the knob is tightened, the blocks flex and squeeze the condiiit (End View).

Aluminum Bars. When you've completed the block, you can use

the aluminum bars to attach the hood You'll notice that two of the bolts are longer than the others. The reason t> that they provide anchon.-i points for a spring that will provide a httle assist to help the hood :.rt over a workpiece.

V-DIA. HOLE

\ A CUT

BLOCK DRILL ^INHALF TWO HOLES FOR # 10 SCREWS ON BOTTOM SIDE (SEE FIG. 2)

W x 37V CONDUIT

STAR KNOB

Vi" -20 x 2W HEX BOLT

FENDER WASHER

-20 x 2V HEX BOLT

ALUMINUM BARS (1 x 6 - H>)

ENP VIEW

NOTE: ASSEMBLE WITH V GAP

FLAT WASHER

- 20 -NYLON LOCK NUT

tt"-20x2Mr $ HEX BOLT

CLAMPING BLOCK (SEE MARGIN)

V FENDER WASHERS

TOP VIEW

9\O x 2V Fh WOODSCREWS

NOTE: ATTACH SPRING TO LONG ( BOOS, SECURE WITH LOCK NUTS (SEE PHOTO ABOVE)

2%' x O.D. EXTENSION SPRING (.035" WIRE DIA.)

38 ShopNotes No. 1)2