How to Change a Dremel Bit

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Dremel manufactures a line of rotary tools for drilling, grinding and woodworking. The company's power tools use a patented collet-and-chuck locking system to hold bits for different applications and to allow a quick change-out of bits. For safety's sake, it is important to understand how to remove and securely install Dremel bits.

How to Change a Dremel Bit
(Sarah Vantassel/Demand Media)

Things You'll Need

  • Dremel tool
  • Assorted bits for the tool
Step 1

Press and hold the silver-colored Shaft Lock Button near the front edge of the tool.

Sarah Vantassel/Demand Media
Step 2

Unscrew the metal collet nut on the end of the shaft by turning counterclockwise.

Sarah Vantassel/Demand Media
Step 3

Unscrew the plastic housing cap front at the end of the tool by turning counterclockwise.

Sarah Vantassel/Demand Media
Step 4

Remove the collet from the motor shaft. The collet is a small, metal, silver-colored tube wider in the front than the back, which inserts into the motor shaft.

Sarah Vantassel/Demand Media
Step 5

Place the collet inside the metal collet nut.

Sarah Vantassel/Demand Media
Step 6

Insert a Dremel bit through the collet nut and firmly into the collet. The Dremel tool comes with four collet sizes, so use a larger collet to accommodate the shank of larger Dremel bits. The bit should fit snugly inside the collet, with no wiggle or play back and forth.

Sarah Vantassel/Demand Media
Step 7

Thread the plastic housing cap back on the tool but do not tighten.

Sarah Vantassel/Demand Media
Step 8

Insert the collet into the drive shaft with the Dremel bit inside the collet and the collet nut over the assembly.

Sarah Vantassel/Demand Media
Step 9

Tighten the collet nut by hand and press the locking button when the nut is seated to secure the collet and Dremel bit. You will hear a click indicating the drill bit is locked.

Sarah Vantassel/Demand Media
Step 10

Hand tighten the housing nut and pull on the drill bit to ensure it is secure. Your Dremel tool is now ready to use.

Sarah Vantassel/Demand Media

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Tips & Warnings

  • The Dremel tool is designed to not operate if any of the collet parts are installed incorrectly. Even so, as a safety precaution, unplug the tool while changing the bits.
  • Wear safety goggles when using power tools.

References

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