RUKO Blog — Steel Drilling

Core Drills or Hole Saws: What is the difference?

Core Drills or Hole Saws: What is the difference?
Core Drill Bits/Annular Broach Cutters share similarities with Hole Saw Cutters, they both cut a groove around the outside of the hole leaving a solid core or slug in the middle. However, there are differences when it comes to Core Drills vs Hole Saws.

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Cobalt vs HSS

Cobalt vs HSS
With so many Drill Bit options it is hard to decide which is appropriate for the task in hand. This article guide will do a head-to-head comparison between High-Speed Steel (HSS) and Cobalt to determine which is the stronger and more suitable metal material for drill bit tools.

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How To Countersink A Screw

How To Countersink A Screw
A guide to countersink drilling in metal such as stainless steel utilising professional Thread Cutting Tap & Die Drill Tools. Two Methods: Machine Taps and Twist Drills as method 1 and Hand Taps and Twist Drills as method 2.

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What is De Burring?

What is De Burring?
To De Burr means to remove excess material known as burrs using De Burring Tools such as Blades, Rotary Burrs and other grinders. This blog explores what is de burring and what techniques can be used.

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Blacksmith Drill Bits

Blacksmith Drill Bits

Blacksmith Drill Bits are a type of Twist Drill that is rolled and typically has a reduced shank. These high-performance drill pieces can pierce through tough materials like Cast Iron.

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