Isolation

Controlling vibration at floor level helps reriivre noise Here, j blixk sjNdmdxxJ bptv.wn rnbher strips keeps vilxolion (jr.d noiie) horn transferring to the floor.

you can use a rubber like pad that's specially designer! to absorb vibration (see left photo). They gener ally come oversized so they are large enough to fit most tools.

This pad can be cut to match the "footprint'of your tool. Or you can «it strips to fit between the frame of a motor and the mounting plate.

Note: See page 112 for mail-order sources of anti-vibration pads.

ISOLATION MOUNTS. But altera lot of searching and testing, the best thing I've found for soaking tip motor vibra lion is a special product called an

"isolation mount." Basically, an isolations mount is a hard rubber cylinder with a threaded hole at each end for a mounting bolt (sec right photo).

What makes these mounts work is thai the holes (and the mounting bolts that thread into them) don't go all the way through. Instead, they're separated by a rubber "cushion" that hel|>s dissipate Ihe vibration.

Note: He sure to select a bolt that's short enough so it won't "bottom out" before it tightens up. See page 112 for sources of isolation mounts, hardware, and other supplies.

Anti-Vibrotion Pad. Ihrirubber-like pad absorbs titration instead of transferring it to the tool stand.

Wood Shop Power Tools

Router Cabinet An enclosed cabinet decreases the noise level of ibis router from lOGdBtoDOdS.

Shop Vacuum. Here, an enclosed cabinet is used to muffle the$httHpiid> of a shop vacuum.

Sometimes even the stand that a tool is mounted on can add to die noise level in your workshop.

TIGHTEN BOLTS. Because a stand can loosen up with use and start to rattle, it's a good idea to tighten down ll ie bolls dial hold it together. And to keep them from vibrating loose again, replace any flat washers with lock washers.

But noise can still be a problem if the stand flexes when the tool is running To keep the metal parts from rubbing agaiusl each other, you'll need lo "insulate" the tool stand.

INSULATE. One way lo do diis is lo disassemble the stand and apply construction adhesive between parls thai touch. Or. jus* add weight or ballast to the stand. (Concrete blocks or sand work well.) To insulate the stand from the floor of the shop, see the ShopTip above.

SHOP-BUILT STANDS, liut perll3ps tile best way I've found to damp the noise of a metal stand is lo replace it widi a shop built one. To absorb as much vibration as possible, incorporate heavy, dense materials like parlicleboard or MDK

To further reduce noise, enclose the tool inside the stand (see photos). Just be sure lo provide plenty of ventilation to prevent hear build-up.

Router Cabinet An enclosed cabinet decreases the noise level of ibis router from lOGdBtoDOdS.

Shop Vacuum. Here, an enclosed cabinet is used to muffle the$httHpiid> of a shop vacuum.

Isolation Mounts. Hard mhber cylinders "isolate" the vibration set up by the motor on a tool.

BELTS & PULLEYS

^fctlthough it's easy to overlook them, the drive belt and the pulleys on a motor also contribute to how much noise a tool makes.

belt. With use. a lump can form on the belt where it's fused together. As this lump passes across the pulleys, it can sound like a washing machine dial's out of balance.

You can replace the old belt with a standard V belt. But a bell like the one in the left photo is specially designed to reduce noise (see Sources on page 112).

tension. No matter which one you use. a belt that's too light runs louder.

Link Belt. Iltc interlocking links create a flexible belt which makes a Tool run smooth ond quiet

So on tools with a fixed (nol hinged) motor. I back off the tension just enough so the belt doesn't slip (see the Shop Tip at right).

pulleys. Noise can also be (raced back to the pulleys on a tool. Typically, many tools have pulleys that are ccii'i from a soft metal. Since these pulleys aren't always perfectly balanced, they have a tendency to wobble and make noise.

My solution to ibis problem is to replace the old pulleys with ones that are f/t riwl from solid pieces of steel (see right photo).

Turned Pulley. Balanced to ran True, this Turned steel pulley reduces noise Caused by vibration.

Turned Pulley. Balanced to ran True, this Turned steel pulley reduces noise Caused by vibration.

alignment. Regardless of the pulleys, they won't run quiet unless they line up. To check this. 1 use a straightedge. When held against the pulleys, it should touch Ihe oulside edges of both pulleys.

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