I would check the sleeve for cracks, and check the collet to see if every thing is clear of rust and or dirt. I hope the collet has not been cross threaded.
Woodnut65
Woodnut65
Agreed, I have two M12V's. The so called "cracks" on the 1/4" reducing collet must line up with the "cracks" on the 1/2" collet when inserting a 1/4" dia bit into the smaller collet. This allows for proper contraction of both collets when tightening the smaller bit.Unisaw said:The sleeve does have vertical cracks by design. They allow it to close when the collet is tightened.
The first thing to do when opening a box with a new router is to take the "stamped" wrench that comes with the unit and open the shop door and throw it as far as you can, then get yourself a real wrench or two.Pop_pop1 said:Hi Unisaw,
I've had an M12V for a few years and found almost immediately that I wasn't comfortable with the slide lock and only one wrench. Initially I had the M12V mounted in my router table. My concerns were realized when a large round over walked out of the collet. Luckly no one was hurt. Since then I have used 2 wrenches to tighten the collet. The second wrench needed is an odd size (23 MM) and hard to find so I made one. Since then I've had no problems with bits, 1/2" or 1/4" shank, walking out. I was too embarassed to call Hitachi and complain.
I believe using 2 wrenches is a more permanent fix to the loose bit problem.
Good luck with it,
Chuck