Custom Drilling and Milling Tools

Aerospace and medical applications often involve difficult-to-machine materials like titanium alloys and hardened tool steels. Standard catalog tooling frequently fails to deliver the dimensional accuracy or surface finish these materials demand. We design each mill tool to your exact requirements to ensure reliability in these high-stakes environments.

Custom Tool & Grinding is a leading provider of precision-engineered cutting solutions for the high-tech manufacturing sector. Since 1976, our team has delivered specialized tools to aerospace, medical, and moldmaking manufacturers near Pittsburgh and across the country. We combine small-shop responsiveness with production-grade equipment to solve the industry’s most complex hole geometry and milling challenges.

Learn more about our custom form drills, multi-diameter options, and precision milling solutions.

Drilling Tool Options

Form Drills

Form drills multiple diameters and radii in a single operation. These tools eliminate secondary processes and produce finished hole geometries in one pass. We recommend form drills for applications where conventional step drilling might cause positional errors.

Our engineering team builds these tools with the following features:

• Custom relief angles to reduce cutting forces in hardened substrates.
• Chip evacuation channels optimized for specific target materials.
• Carbide or PCBN cutting edges for extended life in abrasive alloys.

Medical device manufacturers use our form drills to create counterbored holes in titanium implants. This single-operation approach maintains positional accuracy within ±0.0005″. It also prevents the work hardening that often occurs with multiple tool changes. For aerospace projects, we design a custom mill tool that produces precision fastener holes in composite assemblies.

Multi-Diameter Drills

Multi-diameter drills produce holes with distinct transitions along their depth. Unlike form tools, these options machine sharp shoulders and precise depth stops. We build step drills for fastener preparation and pilot hole operations.

We manufacture these drills with two to five diameter steps. Through-coolant delivery ensures effective chip clearing in deep holes. We also grind custom point geometries to match your entry material. Aerospace manufacturers specify our multi-diameter tools for turbine blade cooling holes. These tools maintain tolerances of ±0.001″ across thousands of cycles. Moldmakers also utilize this specialized mill tool to create ejector pin holes in hardened cavity blocks.

Milling Tool Options

End Mills

Standard end mills often leave visible marks in hardened steels. We manufacture custom end mills with geometries tailored to specific materials. These designs reduce chatter and improve surface finish in challenging applications.

Customization options include variable helix angles to dampen vibration and specialized flute designs for deep pockets. We work with carbide and high-speed steel substrates to match your machining conditions. Each mill cutting tool solution we provide undergoes rigorous quality checks.

Moldmakers working with H13 tool steels use our end mills to achieve Ra 32 microinch surface finishes. This eliminates hours of hand polishing. Our variable-pitch designs also suppress harmonic chatter in aerospace components. These mill cutting tools prevent the surface waviness common with standard hardware.

Form Cutters

Form milling cutters reproduce complex contours in a single pass. We grind these tools to match your part geometry, such as a turbine blade airfoil or a medical device contour. This milling cutter tool maintains dimensional accuracy across long production runs.

We manufacture form cutters for Inconel turbine profiles and custom thread forms. Every milling cutter tool receives precision grinding to match your CAD profile. Defense contractors rely on our cutters for critical components where accuracy affects engine performance. The tools hold profile tolerances within ±0.0003″. Furthermore, our milling cutter tool helps medical manufacturers create complex anatomical contours in orthopedic instruments.

Precision Drilling and Mill Cutting Tools From CT&G

We engineer mill cutting tools for manufacturers who need reliable performance in demanding applications. We design each solution based on your material type, machine capabilities, and quality standards.

Our engineering team works directly with your specifications to optimize tool geometry. Whether you need a prototype or a complete package for a new program, we offer the technical support necessary for success. Request a quote today to discuss your drilling and milling requirements.