What type of machining finishing are you looking for? Tumbling? Deburring? Anodizing? Polishing? Chances are, we've done it. Don't forget sanding and powder coating - they are all part of our surface machining finishing services. Some of the finishes we offer include:

  • Manganese Phosphate
  • Black Oxide
  • Clear Zinc
  • Colored Zinc
  • Nickel Boron
  • Nitride
  • Hard Anodizing
  • Anodizing
  • Teflon
  • Electroless Nickel
  • Hard Chrome
  • Bead Blast
  • Passivation


Tumbling MachineThe tumbling machine is a containment of various sizes of tumbling media combined within a bowl in which parts are fed. When the containment is continuously rotated, the tumbling media rubs against the component and based on the size and type of media used, removes burrs and excess material. It can also act like a burnishing agent to brighten or polish the component.


Deburring MachineBurrs are small, attached imperfections that occur in machining when metal has been changed in some way by a machining process. There are two types of burrs - mechanical burrs and heat generated burrs. No matter how they occur, the fact remains, burrs must be removed. This process is called deburring which can be accomplished with deburring machines. DSI's quality inspection process maintains rigorous control over these pesky imperfections. You can be sure that any parts ordered from DSI will be completely burr-free..


AnodizingAnodizing is an electro-chemical process that gives the surface of metals like aluminum, magnesium, and titanium an extremely hard coating called anodic oxide. The composition of this coating is made entirely of aluminum oxide. It cannot peel or chip because it is fully integrated with the metal itself. It is corrosion resistant and extremely strong making aluminum projects durable for many years to come. DSI has been anodizing aluminum for more than 30 years.


Powder Coating PaintingIf applicable, we will sand and prepare the surface of your project for powder coating. Powder coating is a metal finishing process that is applied dry. A spray gun is used to apply powder with an electrostatic charge. The part being coated is electrically grounded which attracts the powder and makes the coating possible. After the powder coating is applied, the part is then put into an oven which cures the powder. Powder coating can also be applied to plastics by dipping the part into a fluidized powder. Both applications produce a hard durable high-quality finish that liquid paints cannot offer.

We are experts in Machining Finishing.
(763) 428-4321

We serve customers in the areas surrounding Minneapolis and St. Paul, Minnesota and in the cities of the Upper Midwest United States.

Experts in CNC Machining and Fabrication Productivity

Scroll to Top