Kerfgrid
Machine shop Checked Oct 8, 2026

Tolerance Tool and Engineering

Detroit, MI · prototype to production

Certifications · select one to see where it is stated
About

Detroit machining and engineering firm that produces parts to customer prints, from single prototypes through full-rate production, using CNC and manual machining, grinding, tool and die work, and welding. It serves defense, aerospace, automotive, industrial, agriculture, and energy customers.

Summary written by Kerfgrid from toltool.com.

Processes

Select a process to see the sentence it comes from.

Materials
Carbon steel, stainless steel, tool steel, titanium, aluminum, copper, brass and bronze
Industries
Defense, aerospace, automotive, general industrial, agriculture, energy
Volumes
Prototype to production
Holds
±.0002″
On the shop floor
15 machines listed on toltool.com
  • Haas VF-4SS
  • Fadal vertical machining centers
  • Okuma LB4000 EXII
  • Daewoo Puma 240MS
  • Mori Seiki SL-20
  • Mori Seiki SL-25
  • Hwacheon HI-ECO35
  • Herbert DeVlieg horizontal boring mill
  • Kearney & Trecker horizontal mills
  • Cincinnati heavy-duty vertical mills
  • Warner & Swasey turret lathes
  • LeBlond 15″ × 50″ engine lathe
  • Cincinnati 21″ × 72″ engine lathe
  • DoAll horizontal band saw
  • Mitutoyo CMM
Where each detail comes from
  • Processes · CNC milling
    “CNC Machining Centers Haas VF-4SS vertical machining center — 4-axis, 50″ × 20″ × 25″ travels.”
    toltool.com/cap
  • Processes · CNC turning
    “CNC Turning & Turn-Mill — live-tool and twin-spindle turning centers”
    toltool.com
  • Processes · Boring
    “Herbert DeVlieg horizontal boring mill — 43″ × 72″ table, 4″ spindle.”
    toltool.com/cap
  • Processes · Grinding
    “Precision Grinding — surface and OD/cylindrical grinding”
    toltool.com
  • Processes · Tool and die
    “Tool & Die — dies, fixtures, jigs, and gauging built and maintained in-house”
    toltool.com
  • Processes · Repair and rebuild
    “Mold & Die Repair — production tooling repaired and returned to the line”
    toltool.com/cap
  • Processes · Welding
    “Welding & Fabrication — TIG, MIG, gas, and arc in steel, stainless, aluminum, tool steel, copper, and titanium.”
    toltool.com
  • Processes · Fabrication
    “Welding & Fabrication — TIG, MIG, gas, and arc in steel”
    toltool.com
  • Processes · Prototyping
    “Solid Modeling & Rapid Prototyping — prove out a part before committing to a production run.”
    toltool.com/cap
  • Processes · Engineering and design
    “Reverse Engineering & Solid Modeling — from an existing part to a machinable CAD model using CMM digitizing”
    toltool.com
  • Processes · Heat treating
    “Heat treat, plating, anodizing, and coating are performed by qualified outside suppliers and managed by us”
    toltool.com/cap
  • Processes · Plating
    “Heat treat, plating, anodizing, and coating are performed by qualified outside suppliers and managed by us”
    toltool.com/cap
  • Processes · Anodizing
    “Heat treat, plating, anodizing, and coating are performed by qualified outside suppliers and managed by us”
    toltool.com/cap
  • Processes · Saw cutting
    “Cutoff sawing, drilling, tapping, and threading.”
    toltool.com/cap
  • Processes · Drilling and tapping
    “Cutoff sawing, drilling, tapping, and threading.”
    toltool.com/cap
  • Materials · Carbon steel
    “Alloy & carbon steels — including 4140 and leaded grades such as 41L40”
    toltool.com/cap
  • Materials · Stainless steel
    “Stainless steels, all grades — 303 / 304 / 316 / 17-4 and up.”
    toltool.com/cap
  • Materials · Tool steel
    “Tool steels.”
    toltool.com/cap
  • Materials · Titanium
    “Titanium , aluminum, copper, brass, and bronze.”
    toltool.com/cap
  • Materials · Aluminum
    “Titanium , aluminum, copper, brass, and bronze.”
    toltool.com/cap
  • Materials · Copper, brass and bronze
    “Titanium , aluminum, copper, brass, and bronze.”
    toltool.com/cap
  • Certifications · ISO 9001
    “ISO 9001 :2015 Certified”
    toltool.com
  • Certifications · ITAR registered
    “ITAR Registered U.S. Dept. of State · DDTC”
    toltool.com
  • Industries · Defense
    “Military & Defense ITAR-registered production”
    toltool.com
  • Industries · Aerospace
    “Aerospace Flight-critical tolerances”
    toltool.com
  • Industries · Automotive
    “Automotive Tier-1 & OEM supply”
    toltool.com
  • Industries · General industrial
    “Industrial Machine builders & OEMs”
    toltool.com
  • Industries · Agriculture
    “Agriculture Heavy-duty components”
    toltool.com
  • Industries · Energy
    “Energy Built to endure”
    toltool.com