PRO-TECH | Straight Bit 1/8' (3.2Mm) X 1/2' Cut Solid Carbide 2 Flute 1/4'Shank

SKU KP107021


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Double flute Straight bit
Solid Carbide
In choosing a straight bit for any application, always select one with the shortest cutting edges and the shortest overall length that will reach the required cut depth. Excessive length intensifies deflection and vibration, which degrade cut quality and lead to tool breakage.
Use a two-flute bit where fine finish is paramount. Two flutes balance the bit, eliminating vibration that degrades the cut finish. Two cuts per revolution yield a smooth surface, but feed rate is slightly reduced.
This router bit has a
6.35mm shank (shaft) that will fit most small routers. Please ensure that you select a router bit with a shank (shaft) size that will fit into your router collet.
PRO-TECH router bits are manufactured in Taiwan.

Product Details

Part No.Shank dia.Cutting widthCutting HeightRadius (r)
in (6.35mm)
3.2 mm ( 1/8 in )12.7 mm ( 1/2 in )Straight


Length of Shank: 32 mm

Straight bit, 2 Flute, TCT - 3.2 mm cutting widthCutting sample


Take CareFull Speed


Product Features

Additional Info

Router Bit Maintenance

Fortunately, this is pretty easy. The best way to prolong the life of a router
bit is to keep it clean. And what you need to do varies with the type of bit.

Note: Sharpening is extremely important too.

A.   No Bearings:

To clean bits without bearings, first blow off any dust. Then remove any resin
that has built up. (Resin places a drag on the bit which can cause it to overheat
and burn.)

Resin removers are available. It’s the same stuff you use to clean your saw blades.

B.   Bits with Bearings:

To clean bits with bearings, first, remove the bearing. Then clean the bit as
you did with non-bearing bits.

It’s important to remove the bearings because even though router bearings are
‘sealed,’ resin remover can sneak in and dissolve the bearing grease. If this were
to happen, you would be faced with the problem of trying to lubricate a sealed bearing.

Despite the claims of bearing grease sellers, we’ve never had much luck with
this. Once that grease is gone, just go buy a new bearing.

C.   Bit Shanks:

Periodically inspect the shanks of your router bits for rust or burrs. Either
of these can be removed quickly with ScotchBrite®. Left on, they can
interfere with your ability to properly tighten the bit in the collet.

How Fast Should a Router be Running?

If you’ve got a router with variable speed, then you’ve got the power to improve
the quality of your cut. In general, the larger the bit, the slower the speed you
need. The perfect solution for dealing with varying bit sizes is a variable speed

Here are general guidelines for most bits:

Hand Held Router Use

Bit sizeBit sizerpm
Small – 12.7 mm1/16′ to 1/2′22,000+
12,7 mm – 28,6 mm1/2 to 1 1/8′14,000 – 18,000
28.6 mm – 50,8 mm1 1/8′ to 2′12,000 – 14,000

Router Table Use

Bit sizeBit sizerpm
50,8 mm – 63,5 mm2′ to 2 1/2′12,000 – 14,000
63,5 mm – large2 1/2′ and up8,000 – 12,000



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