Burr-Zit Tools
The Original Clothespin De-Burring Tool

Cogsdill Enterprises -- developer and patent holder of the Burr-Zit de-burring tool -- has been manufacturing premium quality de-burring tools continuously since 1961. Burr-Zit tools can de-burr both sides of a drilled, punched or reamed hole in one operation, even when only one side is accessible.

The Burr-Zit tool is the original clothespin type de-burring tool, often imitated but never equaled. Prior to the introduction of the Burr-Zit tool, production de-burring was limited by tool accessibility. Many applications, such as clevices and back walls, could not be de-burred using conventional tooling. In response to this need, Glen Cogsdill, founder of Cogsdill Enterprises and father of the current owner, invented, engineered and patented the Burr-Zit tool, which can de-burr almost all machined holes. This tool makes formerly inaccessible areas accessible, and dramatically reduces production costs.

The Burr-Zit is constructed entirely from a single piece of high quality M-2, high speed cutting steel. Tools made from higher grade steels such as M-4 and M-42 are available for special applications. Several unique features make the Burr-Zit tool extraordinarily efficient. Integral cutting edges prevent obstruction by dirt or chips. An internal tension control pin allows for tension adjustment without removing the tool from the machine. Since the tension pin is an internal feature, it offers no interference to bushings, fixtures, or multiple holes in line.

Cogsdill offers Burr-Zit tools for a variety of applications. System I de-burrs both front and back sides of a hole in one operation, at standard reamer feeds and speeds. System II, which has a "bullet nose," is used for applications in which only the back side of the hole requires de-burring. The System III Burr-Zit tool is designed to combine front countersinking with back de-burring in one operation. The System III tool can also be used to de-burr both sides of a counterbored hole.

We have prepared a visual comparison of the different applications as well as an animation of a System I tool in action for your reference.

Burr-Zit tools can be designed to meet most special applications. We offer extra length tools, taper shanks, non-standard shank sizes as well as shanks with tangs and whistle notches. Our tool number and sizing chart details the standard sizes that are available. Burr-Zit tools are easily resharpened by face grinding, thus assuring long tool life. Users can de-burr up to five thousand holes per grind with approximately 6 to 20 grinds per tool depending on size. No other tool can equal the performance and economy of the Burr-Zit de-burring tool.

NOTE: The System III tool is custom built to your individual needs. In order to ensure an accurate tool design to meet your requirements, a part print should be submitted when requesting a quotation.

Available Coatings

The Titanium Nitride coating is bright gold in color with a surface hardness reaching 81 R/C and a .4 coefficient of friction. TiN has very good corrosion resistance, heat transmission and excellent wear resistance with a wide range of materials, including iron based materials, hardened steels and stainless steel. Increased tool life can run 3 to 8 times greater than uncoated tools.

The Titanium Aluminum Nitride coating is purple in color with a surface hardness reaching 92 R/C and a coefficient of friction less than the TiN coating. TiAlN coating is a high performance coating which excels at de-burring abrasive and difficult to machine materials such as cast iron, aluminum alloys, tool steels, and nickel alloys. TiAlN does not exhibit edge brittleness and will not chip on heavy impact applications. TiAlN coating should be targeted at applications that generate the highest heat level at the tool's cutting edge.

The Balinit Hardlube coating is black in color with a surface hardness reaching 92 R/C. This unique coating has a low friction coefficient of .2 with the advantages of an extremely hard, thermally stable TiAlN coating. Hardlube coated de-burring tools deliver excellent results in cutting problematic, longchipping materials (soft steels, stainless steels and aluminum alloys) dry or with minimal coolant. An excellent choice when a high lubricity coating is needed.

The Titanium Carbonitride coating is steel blue in color with a surface hardness reaching 92 R/C and a .4 coefficient of friction. TiCN coatings offer improved wear resistance to abrasive, adhesive, or difficult to de-burr materials such as cast iron, tool steels, inconel and titanium alloys. Tool life can be increased as much as 800% depending on the application.

Six and Ten Piece ToolKits

New this millennium: Designed for users who need versatility, our 6 and 10 piece ToolKits offer tools to de-burr holes of popular sizes in one handy kit. Perfect for small shops and tool rooms of larger companies, ToolKits are housed in a sturdy metal foldout case. These kits may be ordered with any of the above coatings.