Collet Nut for Mastercraft Maximum Spin Saw/Scie Rotative AC Rotary Trim Cutter would like two collet nuts Lost the one I had

SOURCE: Craftsman rotary tool doesn't lock down on the bits.

the collet is either the wrong size for the shaft on the attachment or is missing alltogether

SOURCE: Kawasaki Rotary Tool is missing the square collet nut

I am working on getting a website for this company, but you can try Alltradetools.com and see if they have anything, they distribute them.

SOURCE: Collet on Freud router won't release bit

a new collet won't hurt, but you may try sanding down the inside of your existing collet with 120 - 180 grit sandpaper. also, buff down the router bits

any condensation or moisture that may have gotten on these items can cause almost invisible oxidation that you can remove easily by sanding. DO NOT USE WD40!!!

Testimonial: "Tks! Will try sandpaper inside collet. Not sure buffing bits will help, since likelihood of ALL of them having a surface problem is pretty low."

SOURCE: My collet nut is stuck and I cannot remove it. Is

remove all the star head screws, unscrew the top plastic collet holding the plastic outer casing on. take a pair of vise grip locking pliers open the plastic casing just enough to expose the inner shaft inside the casing lock the vice grips onto the metal shaft between the bearing casing and the collet that is stuck enough to hold but not to dent it up. now that the vice grips are locked onto the main shaft get an adjustable wrench and size it to the collet screw size and turn it should come off rather easily or at least mine did just did it as i wrote this then screw the casing back together and happy dremeling hope this helps

SOURCE: I have a Dremel 300 and the shaft lock assembly

The "nub" on the shaft lock assembly (internal) has worn down and the assembly needs to be replaced.

If you feel competent to open your Dremel yourself (and it's not on warranty) then order the shaft lock assembly from Dremel (early 2011 price: $1.25, not sure how much postage & handling might be). After opening the tool you will find a metal ring and a small piece (the lock) which it holds in place around the shaft where the lock button is located. Remove the old pieces and replace with the new ones and reassemble the tool.

Otherwise you can send the tool to Dremel to be fixed.