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No-Chip Countersink

5.0
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No-Chip Countersink

Item # 1695
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No-Chip Countersink

About This Item

Install tuner bushings without chipping the finish
Tuner bushings need a snug fit, and that can create a problem: pressing in the bushing forces the surrounding lacquer to lift up and chip away.

The solution is simple: ever-so-slightly cut away the lacquer around the peghole, then press the bushing in. That's what the No-Chip Countersink does: it's a precision cutter that removes just the right amount of finish.

Typical countersinks have one or two cutting edges and they chatter and gouge the wood. This reamer features two dozen tiny cutters with a smooth, controllable action. It's a quick and delicate operation, and you don't even need a drill: turn the bit with your fingertips.

Protects the finish around any screw hole
The No-Chip Countersink also cleans up holes for mounting screws and body bushings. Use it when installing string trees or cover plates. It was designed by Don MacRostie, in the StewMac R&D Department.

    How to use the No-Chip Countersink
  • Use your fingertips; no drill is needed.
  • Only bevel the edge by a few thousandths of an inch. Look closely at your bushing and be sure that the bevel you create will be hidden by the flange.
  • Center the reamer in the peghole and rotate by 1/4 turn or less; the cutters are sharp and work fast.

Dimensions
24 cutters at a 45° angle
Shank: 1/4" (25.4mm)
Diameter: 0.600" (15.24mm)
Length: 1.555" (39.50mm)

Hardened steel.


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5.0
  • 4.75 average rating from 4 reviews
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5.0

Buy it.

By

Verified Buyer


My old version of this was the envy of all at the Bourgeois shop for years. It finally wore out and I've looked for a replacement for a long time. This is just what I needed.

5.0

No chip countersink

By

Verified Buyer


Used this tool to taper a truss rod opening on a headstock so I could remove the nut on the truss rod without removing the nut on the neck. Worked well and did nominal damage to the neck. The truss rod cover hid any mars.

5.0

Smooth and clean countersink

By

Verified Buyer


This countersink is very nice and a step up in finish quality from my 4 teeth hardware store version.
It cuts both wood (bridge pin holes), and lacquer (tuner holes) very smoothly leaving a clean bevelled finish that is round and chip free when used with fingers.

I'm sure a drill press would yield similar results but as I'm using this on finished instruments, fingertips are more prudent.

I don't mind spending good money on a tool that will last me a long time and as I figured this countersink should last me about 40 years (with such minimal wear as bevelling tuner hole lacquer), the price is certainly worth it. This is especially apparent if you have ever had the ... pleasure... of chipping lacquer from a tuner hole while using a cheap and chunky 3 or 4 teeth countersink.

Note that this doesn't go to a final point (a pointy point!) so the smallest hole you can counter sink is 1/16".

4.0

Great tool

By

Verified Buyer


Works as advertised. Clean and even countersink.



StewMac PDF Catalog, page 21 See No-Chip Countersink
on page 21 of our StewMac Digital Catalog