Changing Planer Blades

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Changing Planer Blades[edit]

To ensure the planer is operating well, the blades need to be swapped out for sharp ones every 2-3 weeks.

If the blades have not been swapped out and have seen significant wear, the machine gets locked out until the blades are replaced to prevent damage to the machine. Dull blades cause a lot of vibration and wear, and has the potential to break something.

People that have been trained on this[edit]

  • Hunter E
  • Alex N
  • Nihco G
  • Lincoln D
  • Jeff H
  • Peter B
  • David C


  • 10mm Wrench or Socket
  • 12mm Wrench (flat)
  • 5mm Allen Key or Allen Driver bit
  • Magnetic Planer Blade Jig


30-60 minutes


Have sharp blades ready. We have them sent to Ricci. They typically send them to a sharpener on Thursdays, and they return the following Thursday.

If the blades are knicked, they do not get sent to the sharpener. Because they have to be ground to the point where the knicks disappear it takes a lot of extra time and grinding, which winds up costing as much as a new set of blades.

Check the maintenance log on the machine to see when the last blade replacement was, and when the next one is scheduled.

How to do it[edit]

Follow these instructions for disassembly and reassembly of the machine.

  1. Remove top roller towards the outfeed side (6x allen screws, 3x on either side)
  2. Remove the upper dust guard (4x 10mm bolts on the top, 3x allen screws below the dust port)
  3. Remove the 3 metal rectangular springs (6x 10mm bolts)
  4. Remove the rods that support the orange part from the side (one has a nut on the side of the planer with the handle, the other just slides freely)
  5. Remove the orange part. The bottom lip of that part has to go into the groove where the blades are to be able to come out.
  6. Inspect the blades for severity of dullness. Mutter about people abusing tools.
  7. Use 12mm wrench to remove first planer blade. There are 5x bolts that press a 15" wedge against the 15" blade. Rotate as though you are tightening them to release them. Set blade and wedge aside. Clean with acetone or stiff brush if necessary (sometimes there is sappy or pulpy buildup).
  8. Remove 2nd and 3rd planer blades and wedges.
  9. Install first new blade and wedge using the magnetic jig. DO NOT ADJUST THE KNOBS. It should be pre-set to the proper height, about 0.030" above.
  10. Install 2nd and 3rd new blades and wedges.
  11. Spin the drum by hand to make sure the edges of the blades and wedges will not collide with the body of the machine or any other parts.
  12. Reassemble in reverse order.
  13. Reinstall Orange part and supporting rods. Take care not to nick a blade as you put this back in.
  14. Reinstall 3 metal rectangular springs
  15. Reinstall upper dust guard
  16. Reinstall top roller

Now that it is back together you will want to test it to make sure it is safe!

  1. Clear machine of any tools or loose debris
  2. Do a test power-on. Turn the machine on and immediately back off (within a second). If anything is going to come loose or collide, you want it to stop before it has a chance to do serious damage.
  3. If it sounds normal for the brief test, turn it on like normal and listen.
  4. If it still sounds good, turn it back off and get a piece of material to test with.
  5. Get it set up, turn on the dust collector, turn on the machine, and send it through.
  6. If it cuts nicely with little complaints, it is done!