End Mills & Cutters
Last updated on Friday, January 20, 2017 05:53:34 AM Eastern US Time Zone


 End Mills, Radius Cutters, Engravers, Saw Blades, Straight-shank Arbors, ER-16 Collet Extensions, Fly Cutters

End Mills

Center-cutting (left) & non-center cutting (right) type end mills. Center-cutting end mills can make plunge cuts.
Non-center cutting end mills can not make plunge cuts but clear chips better & they can be (professionally)
sharpened easier. Both types of end mills can make flat surface conventional or climb cuts using the side flutes.
End mill nomenclature  
Surface Feet/Minute (SFM) Chart 1   SFM 2   SFM 3   Machinist Calculator 

TiN-coated, 2 & 4 flute, center-cutting end mill set.

Left to right: 2-flute end mills for aluminum, ball-nose end mills,
45½ & 60½ dove-tail & bevel cutters, edge finders, 4-flute end mills for steel (regular & roughing).

Had to double the end mill storage capacity of this stand. I have no rusting issues using wooden stands.

Small diameter carbide drills (left) & small end mills.

Assorted two, three, & four flute solid carbide end mills sizes ⅜" through 1/32".

1½", 1", ", ⅝", ⅝", ½", ⅜", & ⅜". The three (right) end mills are M42-8%Co alloy with extra long cutting flutes.

M42-8%Co alloy cutting mildly hardened steel.

⅛" & ½" diameter, center cutting, long (4) flute, Titanium Aluminum Nitride (TIALN) coated end mills.

½", 5/16", ⅜", ½", & ⅝" roughing end mills. Sinusoidal-edge pattern breaks chips.
Note: aggressive cuts with this design can overload smaller machines.

Metric carbide end mills: 1, 2, 3, & 4 mm.

1 & 2 mm end mills.

3 & 4 mm end mills.

Two-flute ball-nose end mill. There are also 3 & 4 flute types. These cutters like higher speeds.

1/32", two-flute ball-nose carbide end mills.

Dovetail cutters; 45½ (top) & 60½ (bottom). Cut a square groove, first.

45½ (left) & 60½ (right) bevel cutters (import). For chamfering part edges.

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Bin sorting & storage of end mills.

One-inch "Little Hogger" negative-rake end mill with a " shank that uses two, TNMG inserts.
inserts have six usable tips, each. This end mill requires relatively high RPM.

½" cobalt end mill with 45½ point. Handy for chamfering edges.

Radius Cutters

Radius cutter set. 1/16", 3/32", ⅛", 5/32", 3/16", ½", 5/16", & ⅜" radii.


⅛", 30½ carbide engraver bit.

Solid carbide engraving tools for the CNC mill. The end was first split in half with a standard surface
grinder then the tip was diamond ground to have relief behind the single-flute cutting edge. The point
was then relieved even more using a fine diamond file. See the high-speed motor pulley modification.

Saw Blades

A 45½, left-hand cutter & 3" saw blades with 1" hole having different thicknesses of
1/16", 1/32", & 1/64".

Slit-cutting soft steel. The right side of the vise has a spacer piece of equal thickness to assure even clamping.

This is a one-inch R8 arbor.

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Straight-shank Arbors

 Precision ground ⅞" x 1" arbor with a " straight shank.

Spring-loaded rings spacers for different saw hole sizes: ½", ⅝", ", ⅞", & 1" (India). Below average quality.

ER-16 Collet Extensions
When changing tooling that has different lengths, e.g., a collet chuck versus a fly cutter, I do not want to
have to
loosen/move the mill head & then re-indicate the piece. A stubby ER-16 collet extension & a short-
arbor drill chuck allow me to stay close to the work piece. The long ER-16 extension allows the use of longer
 tooling & end mills. Additionally, the long extension can get into much tighter places than the mill spindle.

ER-16 collet extension pair (USA) having stubby (3.65") & long (6.3"), " diameter shanks. These are very
precisely made extensions with a collet lock nut 13/16" & there is an inside back-up hex setscrew with left-hand
threads that is set against the end mill base. The Martin Tools open-end wrench is thinner, flatter & shorter than
a standard type making it easier to use in tight areas. The collet is snapped into the nut before tightening.
These extensions are made by Craftsman Industries in NV.

There is a left-hand threaded (stop) set screw inside the extension's body.
Using an ⅛" hex wrench, the screw is set against the end mill to keep it from moving.

CAUTION: Do not over tighten lock nut, always use internal backup screw. Do not tighten lock nut on an empty collet.

Stubby extension stays close to the work & can use 10 different ER-16 collet sizes with a 0.0197" ~ 0.3937"
(0.5 ~ 10mm) continuous clamping range. This is especially helpful when using combinations of drills & end mills.

The long extension helps machine hard to access areas.

Fly Cutters

Fly cutter (Sierra American Brand, USA) with " straight shank & ⅜" USA Carboloy grade, left-hand tool bit.
This combination has superior cutting performance when compared to many imports.
It is balanced, precise, & rigid plus the setscrews are hardened & don't strip.

Fly cutter set with straight shanks (import). Substituting with quality setscrews helps performance.

This fly
cutter has a ⅜" straight shaft which can be used in the Taig upgraded ER-16 mill spindle.





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 End Mills, Radius Cutters, Engravers, Saw Blades, Straight-shank Arbors, ER-16 Collet Extensions, Fly Cutters