Flap Wheel Instructions

Flap Wheel Instructions


Wheels for buffer machine

  1. Secure wheel to buffer shaft with the sandpaper facing the direction the wheel will be spinning. Mount wheel with a wheel reducer on either side. Make sure the inner flange of the reducer is facing in towards the wheel.
  2. Tighten down the nut until the wheel is secure on the shaft and doesn’t spin (use a spacer if your nut bottoms out on the threads).

Wheels for die grinder/Dremel

  1. Make sure you have the correct size collet for your tool (either 1/4" or 1/8")
  2. Slide the shaft of the wheel into tool and snug up lock nut


  1. Always sand or buff in the same direction, try to buff in the length of the part. Intersecting scratches do not look good.
  2. Use light pressure with the wheel or you'll wear it out prematurely. If you need to apply heavy pressure, you’ll need to go to a more aggressive wheel like the rough cleaning wheel or a lower grit wheel.
  3. Buffing against the direction the wheel is spinning will cut quicker, buffing with the spinning of the wheel will give a smoother finish.
  4. In order to make the wheels last as long as possible, stay away from sharp edges. The direction of the wheel should be spinning away from an edge and not towards it. Adjust the orientation of the part accordingly.
  5. To achieve a consistent brushed look, follow up with a fine cleaning wheel either by hand or on the buffer.
  6. Always wear a respirator and eye protection when using the wheels!


If you have any questions while using the wheels, don’t hesitate to reach out to me at cameron@prymemx.com. I would love to hear your review of the wheel; you can share your thoughts and pictures on the product page.