About the Deep Hole Drilling Guide
An independent, practical technical reference for deep hole drilling professionals — the methods, cutting parameters, materials, troubleshooting and economics behind gundrilling, BTA and ejector drilling.
What this site is
The Deep Hole Drilling Guide collects the practical knowledge needed to plan and run deep holes — from the definition of a deep hole and method selection, to feeds & speeds, coolant systems, tooling, quality and cost. It is written for engineers, machinists, buyers and students who need working numbers and clear decision logic rather than marketing material.
The content is organized into four areas:
- Core processes — gundrilling, BTA, ejector, and how to choose between them.
- Material guides — cutting parameters by material, from carbon steel to titanium, superalloys and composites.
- Equipment & reference — machines, toolholding, coolant systems, standards and safety.
- Design & economics — DFM, cost per hole, make vs. buy and quality systems.
Interactive calculators let you apply the parameters directly: speed & feed, cycle time, cost per hole, coolant pressure and flow, and method selection.
Editorial independence & ownership
The Deep Hole Drilling Guide is operated by Dongguan RuidCNC Machine Tools Co., Ltd., a deep hole drilling machine manufacturer based in Dongguan, Guangdong, China.
Operating this reference is separate from manufacturing: the technical guides and calculators are researched and written to an engineering-first, neutral standard, independent of the operator’s commercial interests. The supplier directory lists manufacturers under a single set of criteria, and RuidCNC appears in it as one listed supplier, identified as the site operator.
How the information is sourced
Cutting parameters and machine specifications are compiled from published manufacturer engineering data (Allied Machine, botek, UNISIG, Gühring, ISCAR, Sandvik and others) and from industry standards such as VDI 3208/3209/3210, ISO and ASME. Where a number depends heavily on the specific tool and setup, the guide says so and points to the manufacturer recommendation.
Because deep hole drilling is applied in practice across thousands of shops, the site is kept intentionally factual and prescriptive: every parameter table should be treated as a starting point verified with the tool manufacturer and a test cut.
Contact
Found an error, have a question, or want to suggest a topic? Write to:
You can also search the guide, browse the FAQ, or subscribe to the monthly newsletter from the homepage footer.
Disclaimer
This is an independent technical reference operated by a deep hole drilling machine manufacturer, as disclosed in the suppliers guide, the supplier directory and on this page. Guides and directory listings are compiled from published sources and are not an endorsement of any specific product or company. Always verify cutting parameters with tool manufacturer recommendations and actual test cuts before production. Deep hole drilling involves high-pressure coolant and rotating tooling — follow the safety guidance at all times.