End Mill Shapes and Sizes

2022-06-30 Share

End Mill Shapes and Sizes


There are many different types of end mills, each manufactured with a variety of different factors to let you choose the right end mill to match the material you are working on and the type of project you are going to use it for.

1. Router end mills--fishtail


Fishtail points prevent any splintering or breakout and will plunge directly into your material producing a flat surface.

These Router End Mills are ideal for plunge routing and producing precise contours – making them ideal for sign making and metal forming.

For an excellent finish, choose a diamond up-cut as these have an abundance of cutting edges.

2. Engraving V-Bits


V-bits produce a “V” shaped pass and are used for engraving, particularly for making signs.

They come in a range of angles and tip diameters. The small angles and tips provided on these V-shaped engraving bits produce narrow cuts and small, delicate engraving of lettering and lines.

3. Ball nose end mills


Ball nose mills have a radius at the bottom which makes for a nicer surface finish in your workpiece, meaning less work for you as the piece won’t need to be finished any further.

They are used for contour milling, shallow slotting, pocketing, and contouring applications.

Ball nose mills are ideal for 3D contouring because they are less prone to chipping and leave a nice rounded edge.

Tip: Use a Roughing end mill first to remove large areas of material then proceed with a ball nose end mill.

4. Roughing end mills


Great for large surface area work, roughing end mills have numerous serrations (teeth) in the flutes to quickly remove large amounts of material, leaving a rough finish.

They are sometimes referred to as Corn Cob cutters or Hog Mills. so-called after the pig who ‘grinds’ away, or consumes, anything in its path.

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