Just bought a collet extension and noticed the paperwork warned that
it would put a strain on all parts.
Couple of questions:
Is it worth premature wear and would use of it void the warranty on a
I use one (MLCS) in a table mounted 3hp router and haven't had a problem -
yet. But to answer your question, if you install a 2-1/2" long double-flute
straight bit in your router and exert a lot of lateral force, it too would
probably cause some premature wear on the bearing inside the router. How
much and how long you do it are the determining factors. Casual use - as
used in hobby woodworking, I'll probably be replacing my router for other
reasons before any side load I exert on the router will have any ill
Warranty - unless the warranty excludes use of bits of a certain size or
length - I wouldn't worry about it. Make sure the extender is mounted fully
in the collet, the bit you're using is mounted fully into the extender and
both are properly tightened. Fire it up to the recommended speed for the
bit size (assumes you have variable speed) and see if it has any vibrations
that scare the hell out of you.
If it spins okay, sounds okay and looks okay and the router isn't skipping
across the shop floor, try making some light cuts. Use caution and use
hold-downs, featherboards and push sticks, safety glasses (Oh....Norm....)
etc. as needed just in case something spinning very quickly decides to
depart even quicker than you can blink.
If you have to extend probably more than 1" then I would say - find a
different way of making the cut. If you're not familiar with Pat Warner's
site, www.patwarner.com you should give it a look. I haven't checked
recently, but I don't think Pat endorses this extender for the simple reason
it does have some safety issues and Pat certainly advocates doing things
safely. I bought mine to make some oversized moldings that really required
a shaper or molder and I didn't have either and it was a small one-off
project. Spending $25 versus a couple grand made sense but I damn well made
sure I had all the safety items in-place to protect myself.
It's a tool and like all - it can cause some serious damage the second you
take a shortcut or not have your mind on what your doing.
CMT, one of the most respected European names in high-speed router
tooling make one of these things.
I don't care. I'm still not going _near_ the damned thing ! 20K rpm
is an unholy speed that's fit only for angels dancing on the heads of
pins. Mortal man is not meant to rotate things so fast, and does so
only on sufferance. Thou shalt not put the Lord thy God to the test,
nor shalt thou do it thy router.
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