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Surface Grinding Services

Obsidian Manufacturing Industries surface grinding services. Large capacity surfae grinding services with operators with over 100 years of manufacturing experience. Serving the Rockford, IL area.

Why grind with us?

  • Operators have 70+ years of surface grinding experience

  • One-on-one consultation with special applications

  • Competitive pricing for quality craftsmanship

Machines and Capacities

  • Mattison Precision Horizontal 12" x 48"

  • Mattison Precision Horizontal 42" x 115" x 31" High

  • Mattison Rotary 84" x 48" High - Swings 125", Reach Center 114"/115"

  • Mattison Rotary 54" x 24" High - Swings 64", Reach Center 63”

  • Arter Grinder - Model and Size Vary Based on Current Rebuilds

What we can grind


  • Machine Bases

  • Robotic Bases

  • Blade Sharpening 

  • Flat Ways

  • Vee Ways

  • Angle Ways

  • Dovetail Slides

  • Bars

  • Steel Plate 

  • Castings - all kinds

  • Steel Frames

  • Mill Tables 

  • Gears (flat sides)

  • Bolts (heads & ends)

  • Motor Heads

  • Castings from 1 lb. to 16,000 lbs. 

  • Shear Blades

  • Bell Housings

  • Engine Blocks

  • Exhaust Manifolds

  • Lathe Beds

  • Dies

  • and so much more!


  • Brass

  • Stainless Steel

  • Steel

  • Special Alloys

  • Bronze

ObsidianMfg Surface Grind Logo

What our customers are saying...

"These guys are great! I checked 8 places including automotive machine shops and no one could check and Blanchard grind my Lakewood bellhousing scattershield. Obsidian did it for me and they said they have done many through the years! Highly recommend this friendly and competent place" - Kurt, car enthusiast

"I am very happy with turn around and quality of work." - anonymous customer service survey participant

Of those surveyed, 99% responded that they were very to extremely satisfied with Obsidian Manufacturing Industries, Inc.

"So glad to hear that you saved Stieg from near extinction. They've been a very reliable source of grinding for many, many years. Although we don't often have grinding needs, we will be certain to contact you when we do." - returning Stieg Grinding Corporation customer

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