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Bench Grinder

Machine Workshop (Room G24)
Level 03 - Machine Certification


The bench grinder uses an abrasive wheel as the cutting tool to reduce metal components. The grinder is also used for the sharpening and improvement of metal tools It can produce very fine finishes and very accurate dimensions but also capable of roughing out large volumes of metal quite rapidly.

Video of Operation

Health and Safety

  • The grinder is a power tool that has the potential to cause serious injury if used incorrectly. Always exercise extreme caution when using the equipment. NEVER touch the machine or other moving parts during use.
  • Familiarise yourself with the emergency stop buttons on the machine. Always turn the machine off when not in use. NEVER leave the machine unattended while in use.
  • Ensure that the rests are secure and in an appropriate position, no more than 1.5mm from the grinder wheel.
  • Do not overheat the material to the point where it turns blue or yellow.
  • Do not wear loose articles of clothing and/or jewelry when operating the grinder.
  • Please see workshop staff if there are any issues with the machines operation. Please do not attempt to attempt to make any adjustments without prior approval.

Operation Instructions

  • Prepare the workspace: Ensure rests are secure and in optimum position. Ensure accessible space between guarding and blades is minimal. Ensure worksite is clear and water for quenching is available.
  • Machine material: Turn on the grinder and begin grinding the material in a controlled and smooth motion. Use all the surface of the grinding wheel, continually moving the material from side to side The aim is to wear the wheel evenly and maintain the ‘edge’ of the wheel at 90°. Do not hold material in the same position or overheat the material to the point where it turns blue or yellow.
  • Shut down and Remove material: Use the on/off switch switch to turn off the machine. Remove the material and clear away any debris and off-cuts from both the machine and floor.
  • Don’t attempt to grind the material too quickly by applying heavy pressure to the workpiece. It is best to go slow and steady.
  • Similarly to the disc sander the grinder wheels can be changed. Depending on the type of wheel the bench grinder can shape, sharpen, buff, polish, or clean just about any metal object.
  • When grinding, place the workpiece on an angle and move it from side to side to reduce the chance of the material getting hot.