Surface Grinding

Like Blanchard grinding, surface grinding uses a magnetic chuck and an abrasive wheel to remove material. Most surface grinders have the abrasive wheel spindle in a horizontal position. Surface grinding can produce a surface that is smoother, flatter and more parallel than Blanchard grinding, and it is ordinarily used only for removing small amounts of material at a time. Grinding permits very accurate tolerances of less than 0.001″ and allows for very smooth surface finishes up to 16 microinch RMS.

There are four surface grinders at Withers Tool, Die and Manufacturing Company. One of our machines has a vertical spindle and a magnetic chuck that pivots, which works well for grinding angle shear blades and performing other non-parallel applications. The longest surface grinder has a magnetic chuck that is 240″ long and 30″ wide and has ground parts parallel within 0.0003″ over that length.

Specs for Our Surface Grinders

  • Mattison SSG – 30″ x 36″ x 240″
  • Mattison SSG – 24” ” x 42″ x 120″
  • Gardner #618 – 6″ x 12″ x 18″
  • Goeckel GB 65el Knife Grinder – 10″ x 10″ x 100″

Examples of Surface Grinding Work/Jobs We Do

  • Die Work
  • Mold Work
  • Tooling Plates
  • Shear Blades

Surface Grinding can obtain the following tolerances:

  • Flatness +/- 0.0001″ per foot
  • Parallel +/- 0.0001″ per foot

Call us or request a quote online to learn more and get started with your next job.


Surface Grinding Overall rating: ★★★★★ 5 based on 4 reviews.
5 1

Project Coordinator

Top notch quality
- Bob Sherwood

Top Rate Shop

I have had the privilege of working with Withers Tool for the last 15 years on various projects. The projects have ranged in size from small to very large and they have always proven themselves time and time again. Competitive pricing and great service can always be expected.
- Dean McAllister

Professionalism at it's Best

Great experience. Withers goes above and beyond to ensure they exceed your expectations.
- James Bradshaw


Withers understood the importance of my position with a press down and meeting customer's expectations. Withers had no warning as to the scope of the work. They worked late and came in very early to ensure that I had the equipment back in 24 hours. There is no other shop in Atlanta with the resources that would make a commitment as what Withers did.
- John Schneider