Durium tipped drill bits are typically made from a combination of high-speed steel (HSS) and a hard, durable alloy known as durium, which is often a cobalt-based material. The durium tip is designed to provide enhanced wear resistance and heat resistance, making it suitable for drilling into tough materials. This combination allows for better performance and longevity compared to standard drill bits.
Silicon bronze
The best type of drill bit for plexiglass is a carbide-tipped drill bit.
You need a diamond tipped drill bit to drill glass or tile.
The best type of drill bit for concrete is a carbide-tipped masonry bit.
An ordinary HSS drill bit can not cut through glass. A diamond tipped drill bit is necessary for this.
The most common type of drill bit is the 'straight shank steel twist drill' . Other less common but still much used bits are the Brad tipped bit for woodworking and the carbide tipped bit for masonry.
The best type of drill bit for ceramic tile is a carbide-tipped masonry bit.
For drilling into tile, use a carbide-tipped masonry drill bit.
The best type of drill bit for granite is a diamond-tipped drill bit. Diamond is one of the hardest materials and can effectively drill through the tough surface of granite.
A carbide tipped masonry bit would work well.
I use a brad tipped drill on oak and other hardwoods.
For drilling into a granite countertop, it is recommended to use a diamond-tipped drill bit. Diamond-tipped drill bits are specifically designed to cut through hard materials like granite effectively.