Square End Mill

Total found: 209

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Only in stock

Only special price

1/2" Carbide End Mill, 3 flutes, Square End, 1.0" LOC, Uncoated

3AF-500-100Running out of stock

CA$78.25

excl. taxes

4 mm Carbide End Mill, 4 Flutes, Flat, Standard length, For P, M, K materials, AlCrN coated, LOC 12 mm

80147224Made to order

CA$11.15

excl. taxes

6 mm Carbide End Mill, 4 Flutes, Flat, Standard length, For P, M, K materials, AlCrN coated, LOC 16 mm

80147218Made to order

CA$21.46

excl. taxes

8 mm Carbide End Mill, 4 Flutes, Flat, Standard length, For P, M, K materials, AlCrN coated, LOC 20 mm

80147221Made to order

CA$40.24

excl. taxes

10 mm Carbide End Mill, 4 Flutes, Flat, Standard length, For P, M, K materials, AlCrN coated, LOC 25 mm

80147219Made to order

CA$71.76

excl. taxes

12 mm Carbide End Mill, 4 Flutes, Flat, Standard length, For P, M, K materials, AlCrN coated, LOC 30 mm

80147222Made to order

CA$100.39

excl. taxes

12 mm Carbide End Mill, 4 Flutes, Flat, Long, For P, M, K materials, AlCrN coated, LOC 45 mm

80147229Made to order

CA$130.10

excl. taxes

1/4 Carbide end mill, 4 flute, TiAlN, 0.5 shank x 0.75 LOC, helix angle 38, 0.016 chamfer

A01-4063Archive

1/8" Carbide Square End Mill, 2 flutes, 0.5" LOC, Uncoated

80137788Archive

1 mm Carbide End Mill, 3 Flutes, Flat, Standard length, For N materials, Uncoated, Helix angle 37 degree/39 degree/41 degree, LOC 3 mm

EM356-3TL-010Archive

3 mm Carbide End Mill, 2 Flutes, Flat, Standard length, For N materials, Uncoated, Helix angle 45 degree, LOC 25 mm

EM356-2TL-030Archive

4 mm Carbide End Mill, 2 Flutes, Flat, Standard length, For N materials, Uncoated, Helix angle 45 degree, LOC 12 mm

EM356-2TL-040Archive

1.5 mm Carbide End Mill, 3 Flutes, Flat, Standard length, For N materials, Uncoated, Helix angle 37 degree/39 degree/41 degree, LOC 4 mm

EM356-3TL-015Archive

2 mm Carbide End Mill, 3 Flutes, Flat, Standard length, For N materials, Uncoated, Helix angle 37 degree/39 degree/41 degree, LOC 6 mm

EM356-3TL-020Archive

2.5 mm Carbide End Mill, 3 Flutes, Flat, Standard length, For N materials, Uncoated, Helix angle 37 degree/39 degree/41 degree, LOC 8 mm

EM356-3TL-025Archive

3 mm Carbide End Mill, 3 Flutes, Flat, Standard length, For N materials, Uncoated, Helix angle 37 degree/39 degree/41 degree, LOC 8 mm

EM356-3TL-030Archive

4 mm Carbide End Mill, 3 Flutes, Flat, Standard length, For N materials, Uncoated, Helix angle 37 degree/39 degree/41 degree, LOC 12 mm

EM356-3TL-040Archive

2.5 mm Carbide End Mill, 4 Flutes, Flat, Standard length, For P, H materials, TiSiAlCrN coated, Helix angle 45 degree

EM281-4TL-025Archive

4 mm Carbide End Mill, 4 Flutes, Flat, Standard length, For P, H materials, TiSiAlCrN coated, Helix angle 45 degree, LOC 12 mm

EM281-4TL-040Archive

1.5 mm Carbide End Mill, 2 Flutes, Flat, Standard length, For P, M, K materials, AlCrN coated, Helix angle 35 degree, LOC 4 mm

EM311-2TL-015Archive

2.5 mm Carbide End Mill, 2 Flutes, Flat, Standard length, For P, M, K materials, AlCrN coated, Helix angle 35 degree, LOC 8 mm

EM311-2TL-025Archive

3 mm Carbide End Mill, 2 Flutes, Flat, Standard length, For P, M, K materials, AlCrN coated, Helix angle 35 degree, LOC 8 mm

EM311-2TL-030Archive

4 mm Carbide End Mill, 2 Flutes, Flat, Standard length, For P, M, K materials, AlCrN coated, Helix angle 35 degree, LOC 12 mm

EM311-2TL-040Archive

1 mm Carbide End Mill, 4 Flutes, Flat, Standard length, For P, M, K materials, AlCrN coated, Helix angle 35 degree / 38 degree, LOC 3 mm

EM311-4TL-010Archive

<h2>Square End Mills</h2>

<p>A square end mill cuts a flat floor and a 90 degree wall, and that is the only reason to choose one. Everything else about it - rigidity, tool life, how hard you can push it - is worse than the <a href="/catalog/end-mills?properties_corner-type=bull-nose">corner radius</a> version of the same tool. You take the square profile when the drawing requires it, not because it is the general-purpose shape.</p>

<p>The range below covers square-profile cutters in <a href="/catalog/end-mills/2-flute-end-mill">2</a>, 3 and <a href="/catalog/end-mills/4-flute-end-mill">4 flutes</a> across the diameters we stock, coated and uncoated. Details are on each product page.</p>

<h2>The corner is the product, and the weak point</h2>

<p>Cutting load concentrates where the end face meets the periphery. On a corner radius tool that load is spread along an arc. On a square tool it lands on an edge with nothing behind it.</p>

<p>So square end mills fail at the corner, and they fail there first. That matters more than it sounds, because the corner is the exact feature you bought the tool for: once it wears or chips, the tool is still cutting, but the sharp 90 degrees it was supposed to leave has quietly become a rounded, undersized one. The part changes before the tool obviously fails.</p>

<p>If you are checking a square end mill for wear, check the corner, not the flanks.</p>

<h2>What "sharp corner" actually means</h2>

<p>No ground carbide tool has a mathematically sharp corner. Every cutting edge carries a small edge preparation - a hone or a light break - because a perfectly sharp edge would chip on the first pass. A square end mill therefore leaves a corner that is very slightly rounded, not a true zero-radius intersection.</p>

<p>This is worth knowing before a drawing gets quoted. If a print specifies a genuinely sharp internal corner, milling cannot produce it with any cutter, at any price. The options are a corner relief in the design, a wire EDM, broaching, or - the usual answer - agreeing a small radius with whoever drew it. A supplier who tells you a square end mill will give you a perfect sharp internal corner is selling, not advising.</p>

<h2>Rough with a radius, finish with square</h2>

<p>The practical way to use square end mills is sparingly.</p>

<p>Take the bulk of the material out with a <a href="/catalog/end-mills?properties_corner-type=bull-nose">corner radius</a> cutter, which will survive the heavy cut and the deep engagement. Then bring in the square tool for a light finishing pass that establishes the floor, the wall and the corner. The square cutter sees a fraction of the load, so its corner stays sharp for many more parts, and you are not spending a fragile edge on roughing work that a stronger geometry does better.</p>

<p>On short runs this looks like an extra tool change. On anything repetitive it pays for itself in corners that still measure the same on part fifty.</p>