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I figured it out. Use a small std slot screwdriver (not a jewelers or hobby screwdriver, more like the smallest standard screwdriver in your regular tool kit). My Type 2 Model 395 has a couple small tabs. Put the blade of the screwdriver on one of the tabs (shaft of screwdriver perpendicular to the tool) and press downward (not too hard) and toward you (if right handed). The plastic tabbed cover should rotate in towards the tool. That's the brush holder and you are rotating it 180 degrees so that the brush comes to the top. It will take a couple of "bites" of the screwdriver to rotate it fully. Be careful b/c the brush is under spring tension and if you rotate it w/o care it will shoot out (my first one did). Anyway, you should see a carbon brush with a slight arc cut in it if you have any brush left. Hopefully, you have little or no brush and a spring. Then it's easy to replace (my brushes were OK and just re-seating them and my tool was OK). Note that the 90930 brushes sold at most hardware stores won't fit. They are for the Types 3,4, and 5 model 395 (and other dremel models). You need the 90929 brushes for the Type 2. My camera is klutzy. If you can't get it, let me know and I'll try to post a picture or video.
The coupler nut tends to be screwwed on so tight that even when undone, the collet has bit into the soft shaft of the tool. Holding the rotation lock button in, grab the shank with some strong needle nose pliers and twist the shaft loose or pull it off completely with the nut and then seperate the nut from the shank when it is out of the Dremel Tool. A lot of machine tools are tightened too much, which makes the shanks get all damaged so use only the required tension on that collet nut.
The collets are a friction fit, and tend to bind after being left in one position for a time. Try this: Tap the bit, if there is one in the chuck, towards the motor. This sometimes creates the slack needed to remove the bit. Put a little light oil on the collet before you replace the bit. If no bit is in the collet, try a light oil, and tap directly on the collet with the chuck collar off. Also, tapping from different angles after adding the oil will help to dislodge the collet. One other method is to set and hold the shaft lock after oiling, and try to rotate the collet slightly while exerting an outward (pulling) force with pliers or channel locks. Be careful with this method, as too much force can result in damage to the collet. Best regards, --W/D--
You have to split the case and remove the entire switch/brush holder from the tool. You can use anything from picks to files to drill bits to get all of the stuck brush material out of the switch. Small files help clean up the holder area. Just be very careful not to damage or break the switch, they have been discontinued and are getting exceedingly hard to find on after-market parts sites. Depending on which version 395 you have, switches are available for a couple of them at www.ereplacementparts.com. The different versions have a number like F0130395XX, where the XX is different for each model variation.
I assume you mean something like a Dremel high speed rotary tool with various bits. Here are some general guidelines....
You can divide the bits into three groups - cutting, grinding, and polishing.
The cutting tools will have the largest (relatively) teeth, some look like little gears. These are suitable for fairly soft materials like wood and plastic, and maybe drywall. They are useful for carving.
The grinding tools are either small stones (these are very hard, not rubber) or they have a fine coating of diamonds glued to a metal surface. Both are used for grinding hard stuff like metal, ceramics or glass. The diamond coated ones can grind very hard materials. The stone ones can wear down, but remain usable. Grinding is handy for sharpening and for removing small amounts of metal to shape it - but this is a pretty slow process. You can also etch glass by grinding it, but be sure to keep a little water on the glass or the local heating of the glass will break it.
The polishing tools are hard rubber or fabric or little wire brushes. These are good for polishing things, mostly metal. I find the little wire brush bits very useful for cleaning up corroded contacts in flashlights and other battery-operated devices.
Be sure to wear safety glasses with any of these bits, but especially the wire brushes as they tend to throw out those little wires!
Let me know if you would like any more help. Thanks for using Fixya, and good luck.
If you are asking how much to tighten it then it should be a little more than snug, if you want to know how to lock it to tighten I would need the model number to find out what they use. Please let me know and I will try and help
I would go direct to Dremel.com or call them at 1-800-437-3635 and get the schematic and parts you need, I just checked and they have a parts diagram online that you can view. go to the section about manuals/literature and type in your model number. Good luck
Unplug it, then while pushing in the little silver button near the head use a wrench on the hex nut and turn counter clockwise about a 1/2 turn. Push the bit in, then pull it out (that releases the little fingers that hold it).
The silver button locks the head so it won't spin while you are changing bits. Always be sure it is released before plugging in or turning on the power.