Indexable Insert Tooling
New tooling and expert repair for CAT tapers, KM, HSK, ABS, boring bars, trepan tools, removable-head cartridges, and rough/finish combinations.
Standard and custom geometries↗
Built for demanding work
Precision
without
compromise.
From proven indexable insert tooling and TrueBore carbide boring bars to one-off parts and production runs, RT&T solves exacting manufacturing challenges under one roof.
Industrial craftsmanship / 1982—todayMentor, Ohio
1982Family-owned since
12,000Square-foot facility
100+Machines & capabilities
1 shopTooling through finished part
What we make
A deeper bench for difficult work.
Bring us the print, the worn tool, the part you cannot source, or the application that keeps fighting back. We combine practical engineering with in-house manufacturing to find the right answer.
Custom Manufacturing
One-off components, hard-to-source replacements, prototypes, and smaller production runs—made without forcing your project into a high-volume model.
Short runs welcome↗
Machine Shop Services
CNC milling, turning, routing, and welding backed by experienced machinists who know how to solve around unusual parts and demanding applications.
From print to finished part↗
TrueBore™ Carbide Bars
In-house carbide boring bars engineered for rigidity, repeatability, long reach, and dependable finish quality in demanding bores.
Standard and made-to-order↗
Built by RT&TCarbide rigidity. Reliable finish.
Signature product
TBTrueBore™by RT&T
Built to reach farther—and hold the line.
Manufactured in-house from premium sub-micron carbide, TrueBore bars deliver the stiffness, repeatability, and finish control demanding boring applications require. Choose a standard size or let us build the length, diameter, and geometry around your application.
Hardness92 HRA
TRS3500 MPa
Insert readyCCMT · DCMT · CNMG
ConfigurationsStandard + custom
Standard boring bars
Find the bar that fits the bore.
Ready to order?Shop TrueBore online
Browse available carbide boring bars and place your order directly through the TrueBore store.
Visit truebore.storeSmall-diameterFrom $86.19CDCD 505 inserts
CCMT 21.51From $97.351/4″ through 1/2″ bars
CCMT 32.51From $273.031/2″ through 3/4″ bars
CNMG 432$733.191″ × 8″ configuration
| Item number | Size (D × L) | Insert | F dim. | Min. bore | Coolant | List price | Shop |
|---|---|---|---|---|---|---|---|
| CDCD-51-3/16 | 3/16 × 4 | CDCD 505 | .104 | .208 | No | $86.19 | Shop ↗ |
| CDCD-51-1/4 | 1/4 × 4 | CDCD 505 | .145 | .270 | No | $97.35 | Shop ↗ |
| C-SCLCR 4-2 | 1/4 × 4 | CCMT 21.51 | .188 | .313 | No | $97.35 | Shop ↗ |
| C-SCLCR 5-2 | 5/16 × 4 | CCMT 21.51 | .219 | .375 | No | $110.04 | Shop ↗ |
| C-SCLCR 6-2 | 3/8 × 4 | CCMT 21.51 | .250 | .437 | No | $137.40 | Shop ↗ |
| C-SCLCR 8-2 | 1/2 × 6 | CCMT 21.51 | .312 | .562 | No | $225.17 | Shop ↗ |
| C-SCLCR 8-2 | 1/2 × 8 | CCMT 21.51 | .312 | .562 | No | $273.03 | Shop ↗ |
| C-SCLCR 8-3 | 1/2 × 8 | CCMT 32.51 | .312 | .562 | No | $273.03 | Shop ↗ |
| C-SCLCR 10-3 | 5/8 × 7 | CCMT 32.51 | .406 | .718 | No | $332.28 | Shop ↗ |
| C-SCLCR 12-3 | 3/4 × 7 | CCMT 32.51 | .500 | .875 | No | $423.15 | Shop ↗ |
| C-MCLNR 16-4 | 1 × 8 | CNMG 432 | .640 | 1.140 | No | $733.19 | Shop ↗ |
Prices shown are RT&T list prices and may change. Confirm current availability and pricing in the online store. Custom lengths, diameters, and geometries are quoted separately.
Need a custom bar? Request a quoteOur story
Small-shop accountability. Serious capability.
Paul Thompson started RT&T in a 500-square-foot garage with three employees and a straightforward idea: do precise work, stand behind it, and treat every customer like the job matters.
Today, Paul’s daughters and grandson carry that standard forward from a 12,000-square-foot Mentor facility. The shop has grown to more than 100 pieces of equipment, while the personal, hands-on approach has stayed exactly where it began.
“Every project—small run, custom tool, or complex machine work—gets the same attention to detail.
Where we work
Made for industries where precision is the baseline.
Our tooling and custom manufacturing support teams that value responsiveness, practical problem-solving, and repeatable results.
Start a conversation
Have a difficult job?
Let’s talk it through.
Send a print, describe the application, or tell us what is not working. Our team will help determine the best next step.
Email project details Or call the shop440-974-8479