DSI has provided precision CNC machining services since 1982. Customers have come to know DSI as an ISO 9001: 2015 Certified plastic and metal machine shop that provides exceptional quality at competitive prices. Need a machine shop? Whether your need is metal machining, plastic machining or machining finishing, DSI offers best-in-class precision machine services backed by on-site quality inspection services. CNC machining services includes CNC Milling and CNC Turning. Additional machine shop services include Surface Grinding, Assembly and Finishing.


CNC Machining Services PartsCNC metal machining is an automated manufacturing process whereby the factory metal machining tool is operated by pre-programmed software. The acronym CNC comes from the term "computer numerical control." With CNC, programs control complex machining and factory tool movement such as speed, rate of feed and coordination. CNC allows software to carry out repetitive, predictable tasks rather than rely on human operators. The results - consistent and precise metal parts production. DSI offers both metal and plastic CNC machining production.


CNC Machining Services - MillingDSI employs 3 axis, 4 axis, and 5 axis CNC milling machines with both vertical and horizontal milling capabilities. DSI gives customers a full range of plastic or metal milling options necessary to achieve their precision and tolerance objectives. With a staff of highly-trained CAM programmers utilizing Mastercam, GibbsCam and Autodesk Inventor, DSI has the resources to rapidly produce complex milled parts.


CNC Machining Services - Turning

What is CNC Turning?
CNC Turning is a computerized machining process in which a plastic or metal working piece is held firmly in place while being rotated. A turret that holds the cutting tools and controlled by the computer is then fed into the piece to remove material and shape the finished part. The turret can hold multiple tools allowing many options of complexity when building the part. DSI turning centers employ swiss CNC turning machines with up to 13 axes. DSI has swiss lathes, twin spindle, twin turret, multi-plex, single turret/single spindle, single turret/twin spindle, and four lathe machines equipped with bar feeders. DSI is equipped to handle any of your lathe or machine turning needs. Our staff of highly-trained turning machinists and Swiss machinists can work with you to ensure your part exceeds all expectations. Contact DSI today to learn more about how we can help you make your CNC Turning project a success.


Electrical Discharge MachiningElectrical Discharge Machining, also known as EDM, is a process that does not use mechanical force to remove material from a working piece. The process involves using an electrode to melt or erode the material. The electrode never touches the material. It is in the discharge gap between the electrode and the material that causes the material reduction. This gap can be as small as a human hair and the discharge happens over 100,000 times per second. The process also uses a non-conductive fluid to cool the machined part and remove excess material during the cut. EDM is ideal for tool and mold making and when hard-materials with complex shapes are needed that cannot be accomplished with milling. DSI is a one-stop-shop and if this is part of your project, we will certainly accommodate your need.


Surface GrindingSurface Grinding is a metal finishing process that uses a rotating abrasive metal-cutting grinder wheel on material to give it a more refined flat-finish look. It is used to remove a layer of oxide or impurities or to give the material a certain type of functional surface. DSI offers customers various machining grinding options including straight line and randon-arc capabilities as well as multiple hand grinding capabilities. Contact DSI for more specific information about your grinding needs.

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


Decimet Sales provides plastic and composite machining services also. The above metal machining services can be applied to plastic as well. When it comes to machining, we are experts. Whether it be CNC plastic machining, milling, or turning plastics, we have advanced capabilities and extensive experience. You need rapid turn-around? No problem. You need fast reliable delivery? That's what we do. Turn to DSI for quality and reliable plastic machining production runs.

Need Composites or Teflon work done? Yes, we do that too - and we have extensive experience with it!

CNC Machining Services - Plastics

CNC Milling

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


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 finishing machine 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 preparing 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

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