Think & Tinker, Ltd.
CNC router bits and carbide cutting tools with tutorials and technical guides

Contact Us





Postal address

Think & Tinker, Ltd.
P.O. Box 1606
Palmer Lake, CO 80133-1606

Shipping address
(US Post Office does NOT deliver here!)

Think & Tinker, Ltd.
579 County Line Rd. Unit D
Palmer Lake, CO 80133

CAGE number


Think & Tinker, Ltd., founded in 1990, is a family owned and operated business located on the Palmer Divide in the Rocky Mountains of Colorado. Under the PreciseBits brand of precision cutting tools, Think & Tinker designs, develops, and manufactures application-specific solid carbide micro-tools for working hardwoods, plastics, metals, and reconstituted minerals:

  • Drill Bits
  • End Mills
  • PCB Router Bits
  • 3D Carving Tools
  • PCB Mechanical Etching Bits

Since the introduction of the PreciseBits brand in 2001, our goal has been to supply some of the finest cutting tools in the world, to markets that have traditionally been underserved by larger carbide grinding houses. All of our products have been tested and tuned to specific applications, with an emphasis on precision and reliability. Best of all, we stand behind everything we sell.

Think & Tinker designs and manufactures carbide tools for the precision machining of wood, metal, plastics, unfired ceramics, natural stone and a wide variety of engineered materials.  We are a leading supplier of cutters to manufacturers of steel rule dies, pool cues, musical instruments, children's toys, printed circuit boards, custom cabinetry, and dimensional signage. As the originators of the "application specific tool" concept, we specialize in developing innovative cutters and techniques for new and emerging markets. If your application requires carbide micro-tools, drill bits, end-mills, router bits, V-tip engravers, tapered tools, or odd shaped little cutters, chances are we either already stock it, or can make it to your specifications.

The founders and principals of Think & Tinker, Ltd. believe in the fundamental equality of all people and conduct our lives and business in submission to the Word of God and the teachings of Jesus Christ. We believe in the inalienable rights enumerated by the Constitution of the United States of America. We are proud to number among our customers some of the best companies and finest people, from every country and virtually every walk of life.

From the beginning, we have strived to deliver outstanding customer service coupled with products of the highest quality.

Our proprietary designs and exacting manufacturing specifications insure that every tool we sell meets or exceeds our customers' needs and expectations. The foundation of our commitment to deliver top-quality tools to our customers is our 100% inspection Quality Control process using state-of-the-art optical measurement systems developed in-house to support both manufacturing and product design. We believe that this is the only way to ensure that we deliver the finest products to customers who demand precise, reliable tools in their applications.

We also believe in service beyond expectations for our customers. This is achieved through extensive on-line tutorials, participation in industry forums, direct one-on-one troubleshooting of cutting related problems, and supporting our customers' efforts to achieve excellence in their own products and services.

For the past 25 years, the folks at Think & Tinker have been designing custom cutters for a wide variety of soft, non-metallic materials. In 1998, we began working with some of the best pool cue artists / craftsmen in the United States (and arguably, the world) to develop a set of tools that would bring the precision of metal machining to CNC and pantograph based woodworking. With the introduction of the MM208 family of milling cutters in 1999, this goal became a reality. Ongoing development led to the introduction of the PreciseBit family of cutters in 2001 with diameters ranging from 0.0010" (0.025mm) to 0.1250" (3.175mm). Boasting specifications like 0.0005" max TIR (0.0125 mm, Total Indicated Run-out) and diameter tolerances = ±0.0010" (0.025mm) PreciseBits remain some of the finest wood cutting micro-tools on the market today.

The increasing sophistication of woodworkers and artists, coupled with the steady reduction in cost of high-quality CNC milling/turning systems, has fueled the need for ever more precise cutting tools. PreciseBits answers this need with the MM3I8, MM308 and MS3I8 families of micro-tools. Made in the USA, each tool is laser and/or optically inspected to insure compliance with published specifications of 0.0005" (0.0125 mm) max TIR and diameter tolerances = ±0.0005" (0.0127 mm). Each bit features a unique 3 flute, radially relieved geometry that combines superior stiffness, chatter-free cutting, and breakage resistance with the highest flute capacity of any comparably sized micro-cutter on the market.