A reamer belongs to a family of rotary cutting tools that metal and wood workers use for a wide variety of projects. Reamers drill precise holes that enlarge the size of a previously drilled hole. The best reamers leave smooth impressions around the circumference of the hole. However, much of the success enjoyed by metal and wood workers comes from knowing how to use a reamer.
Select the Right Reamer
Users must choose amongst various styles, including fluted, spiral, straight, and slanted. Some reamers possess lead-ins that provide users, especially novices, with increased accuracy. Consumers must choose between manual and power reamers, with the decision mostly depending on hand and arm strength. The reamer purchased must conform to the desired hole diameter and contain materials that match the task. For example, users should consider stainless steel reamers to bore wide metal holes.
Hand reamers work best on soft wood, plastic, and some types of polymers. Users enjoy greater accuracy because handheld reamers do not have motor vibrations. The first step for using a hand reamer is securing the materials to a flat surface by using a clamp or vice. Users then clearly define the area for reaming and create a hole that measures about 0.2 centimetres smaller than the hole planned for the project. The most effective way to ensure accuracy is for the user to move the hand reamer in a steady, counter-clockwise motion that slowly enlarges and smoothes the finished hole.
Power tools typically shorten the amount of time required to finish a project without sacrificing quality. A power reamer provides the same benefits, as hand reamers. To start, the user secures the material, defines the reaming area, and bores the 0.2 centimetre smaller hole. The user then operates the press power reamer counter-clockwise at around 50 per cent of the speed used to create the original hole. Then, lower the power reamer to the hole and begin reaming the hole. Machine reamer operators should lubricate the processed area with mineral or cutting oil to ensure the smoothness of the hole perimeter. Finish the job by wiping away excess oil and using a fine edged file to produce surface continuity.
Another reamer option involves the use of a lathe. This method works well for producing very large holes, as lathes remove more material in less time than hand or power reamers. However, accuracy can be an issue, which means securing the material to match the lathe designs becomes a critical factor that determines success. Bore a pilot hole that measures slightly smaller than the diameter needed for the final version of the hole. Users then align the lathe, turn on the power, and push the lathe through the material. Remember to run the metal lathe continuously. Starting and stopping the motor can cause serious hole imperfections caused by sudden jolts.