What is the best drill bit for aluminum?
What is the best drill bit for aluminum?
1. Choose a suitable drill bit. Aluminum is a soft metal and therefore a standard HSS drill bit will be able to drill into it. However because of the low melting point of aluminium a better choice would be to use a cobalt drill bit.
Why is a drill point 118 degrees?
The two most standard point angles are 118 and 135. The 118 is generally used for drilling into soft material like wood. Due to the amount of pitch, this makes it easier to drill repeated holes into hard material. The difference will be in the shape; a 118 is more aggressive and has a smaller chisel.
How much is a drill angle?
A drill bit has two cutting surfaces, one on each side of its center axis, that are cut at an angle of approximately 60 degrees.
Can you use Forstner bits on aluminum?
A Forstner bit is used by woodworkers as it makes holes very smooth and flat-bottomed holes. A Forstner bit can also be used with a drill press. You can definitely drill aluminum using a Forstner bit, but it’s easier to drill aluminum with a paddle bit.
What angle are most drill bits?
118 degrees and 135
The two most common drill bit point angles are 118 degrees and 135 degrees. The difference between the two is the shape; a 118-degree bit is steeper, more pointed and has a smaller chisel. The 118-degree bit cuts more aggressively and is generally used for drilling into soft material like wood.
What is point angle?
n. The junction of three surfaces, as of the crown of a tooth or the walls of a cavity.
How hard is it to drill into aluminum?
“Aluminum is a generally soft, nonferrous, ductile material with low density and naturally high resistance to corrosion. Aluminum is difficult to drill because its ductility and softness causes the material to make constant prolonged contact with the rake face, or cutting edges, of a drill.”
What is the best angle to drill aluminum?
of the way when machining harder materials. This means an upright, high shear angle with a minimal edge hone is ideal for drilling aluminum. “Generally, drills with a high helix angle, polished flutes and 130° to 140° point angle will provide the best chip evacuation and cutting performance,” Frazier said.
What are the different drill point angles?
And there are a number of different configurations, each of which—when combined with a particular drill point angle—is suitable for specific jobs. The general purpose drill points found on most jobber drills are 118° angled drills.
What are conventional drill points used for?
Conventional points with 118° point angles are used most commonly for drilling in a wide array of materials. Other drill point configurations include: Notched points: were developed for drilling hard alloys and have reduced drag on the chisel edge.
Which drill angle is best for chip evacuation?
“Generally, drills with a high helix angle, polished flutes and 130° to 140° point angle will provide the best chip evacuation and cutting performance,” Frazier said.
