Steel rule die-cutting is a process we use at SiTECH for cutting custom conductive contacts, and is also used for limiting the amount of product handling as well as cutting adhesive backing. Steel rule dies are usually constructed using various high-grade plywood. Die makers will use a laser or special saw to cut precision splits in the wood allowing blades to be set into place. The blades are made out of steel rule, which is essentially an elongated razor blade. The blades are bent and cut to make the desired shape and are placed into the slits of the wood. Typically rubber pads are used within the blades to compress when the die is shut, and expand when the die opens pushing out the material that was just cut.

Steel rule come in all shapes and sizes. There are a variety of steel rule to pick from based on the application it is chosen for. With many variations in the shapes and sizes also comes variation in the blade styles. There are a few blade styles to choose from, each being designed specifically for a desired task. The first is center bevel. Center bevel is one of the most common types of rule, being it is one of the most durable configurations. The edge of the blade is centered between the two sides of the steel rule. Another type is a facet bevel. The facet bevel is similar to the center bevel in that it is centered between the two sides of the steel rule. However, the facet bevel is more diamond shaped and leaves a cleaner cut on the finished product. You also have flush bevel as another option for your blade type. Flush bevel has a cutting edge along one side of the steel rule. These blades typically leave one of the cleanest cuts, but also suffer from decreased blade life. One of the final types of blade edges is side bevel. Side bevel uses a blade edge that is slightly off center. These blades have a clean cut and typically have long use.

Here at SiTECH we use Steel Rule Dies to cut conductive carbon inserts that we mold into our keypads. We also use these dies to limit the amount of product handling. This is done by die-cutting the final product after all other processes have been completed. One other thing we use die-cutting for is custom adhesive backings. These adhesive backings typically need to be in the shape of the part and die-cutting is a great way to quickly produce these backings.

Due to the limited longevity of steel rule dies, they are generally cheap in price to create. However, it becomes less beneficial the more times you must replace the tool. Some of our customers have products that require a custom milled punch to hold up to the demand. Custom Milled Punches are solid steel cutting tools that have been milled into the shape you required for your blade. These punches can theoretically last for years if kept maintained and sharpened properly. Generally these punches can cost quite a bit more than a steel rule die, but can be worth using if your product requires frequent high volume orders.

Steel rule die-cutting is a value added service we use here at SiTECH for ensuring the best quality product is delivered to our customer. If you would like to speak with one of our Engineering staff about incorporating die-cut parts into your design, or simply would like to speak about a silicone component please call us at: 757-887-8488 or use our Quote Form to request a quote today.