You should always do this first before working on any kind of power tool to make sure that you don’t accidentally turn it on. This will help prevent accidental injuries or damage to the tool.
This button is a security lock that will allow you to loosen the chuck nut so you can replace the bit. It keeps the bit from just twisting freely. [3] X Expert Source Jacob PischerHome Improvement Specialist Expert Interview. 4 September 2020.
You can just loosen the chuck nut with the wrench and use your fingers to unscrew it until you can pull the bit out.
You can use all kinds of different bits with a Dremel tool for cutting, grinding, sanding, polishing, and other functions.
Collets come in different sizes; not all collets can hold all sizes of bits. If the bit you want to use is too big or small for the collet in your Dremel tool, then you will need to replace the collet.
Changing a Dremel bit is similar to changing any other drill bit. The way you release the chuck nut and loosen the collet may vary from tool to tool, but the general concept is the same.
If you aren’t sure what sizes you will need, you can purchase a kit labeled “miscellaneous” and you should have a variety that will work for many different sizes of bits. [10] X Research source
This is a general safety rule that you should apply when working on any kind of power tool! Disconnecting tools from power sources will help avoid accidental injuries or damage to the tools.
You just need to get the chuck nut loose with a twist of the wrench so you can finish unscrewing it with your fingers.
If you want to replace the chuck nut with a new nut that came in your kit, then you can discard the old nut at this time.
The collet can just slip in and out, but if it has been sitting in the Dremel for a long time you might need to give it a little twist to get it to start sliding out.
Using different sizes of collets will allow you to adapt the bits you use to be more precise with your projects.
