About Sinker EDM

Production Ram/Sinker EDM and Large Machine
Ram EDM Electrodes

Various Shapes and Sizes In Blind Cavities

Various Shapes and Sizes In Blind Cavities: Threads Into Hardened Materials, Molds, Hexes Into Bolts, and Keyways
There are many operations where Sinker EDM is the most efficient way to machine parts. Sinker EDM can be done in the vertical or horizontal position. We are able to even EDM parts upside down.

Production Ram EDM 3

Extreme Accuracy and Fine Finishes

Extreme Accuracy and Fine Finishes
Tolerances of up to +/- .0001" can be achieved with very fine finishes.

Ram EDM Miniature Parts

Miniature Parts

Miniature Parts
400 pins were Sinker edmed. The coin shown is a dime, and the pins are .012 inch diameter to a depth of .030 inches.

Ram EDM Parts

Helical Gears

Helical Gears
Orbiting machines can machine helical gears and shapes. Our Sinker EDM machines are capable of orbital, vectorial, directional, conical, horizontal planetary, cylindrical, helical, concave and convex spherical machining.

Ram EDM Multiple Parts

Production EDM

Production EDM
Since all our machines are computer numerically controlled (CNC), they are excellent for production work and repeatability.

Ram EDM: Blind cavity into large valve

Angled Blind Cavities

Machining at an Angle
Sinker EDM is capable to machine parts on an angle.

Ram EDM: Large Parts

Large Parts

Large Parts
Work tank size on this machine is: X 79.5 inches, Y 126.7 inches, Z 53 inches. Table load is 66,000 pounds.

Ram EDM: Tall tubes up to 10 feet

Tall Parts

Tall Parts
By modifying machines, tall parts can be EDMed.

Videos on Sinker EDM


Video on Introduction to Sinker EDM Introduction to Sinker EDM
(6:47)
Video on Capabilities of
Sinker EDM Capabilities of Sinker EDM
(9:25)
Video on How Sinker EDM Works Part 1 How Sinker EDM Works Part 1
(6:17)
Video on How Sinker
EDM Works Part 2 How Ram EDM Works Part 2
(7:11)
Video on Incredible Sinker EDM Incredible Sinker EDM
(6:59)