[DaninVan]

Hi,Mick; welcome! I'm not being snarky when I say you need to do some reading on operating a router. Seriously, these things can bite!
All router collets are not created equal, but most work on the principal of a cone inside a nut; as you tighten the nut the cone which is split, closes up on the shank of the correct sized bit shank, gripping it firmly.
Some routers have a shaft lock which prevents the collet, bit. and arbour from moving while you tighten the nut. Others require two wrenches; one to hold the arbour and the other to tighten the collet nut.
There's a LOT of You Tube videos on operating routers, well worth the time spent.
Again, welcome!

 

[DaninVan]

So, I mentioned my neighbour scoring a Bosch 4100 TS for $275Cdn. a couple of weeks ago. Well thanks to Herb's generosity he's now got a new guard, and the TS is cleaned and serviced.
Today he took it for a test drive and on our late afternoon dog walk he mentioned that the blade that's on it must be dull...'cause it's smoking.
It didn't look bad when I first saw it so my alarm bells went off!
"What were you doing with it?" I asked. "Well I was cutting a piece of hardwood, like this," making a gesture indicating a crosscut.
Now I'm really worried! "Crosscutting? Freehand?!" I asked. "What's crosscutting?" he said...
"So let me get this straight; you were cutting across the wood grain freehand...no fence of any kind?"
"Yeh; what's wrong with that?"
Fortunately another woodworker neighbour was also there as our combined shocked expressions must have made an impression.
"Pretty sure that's why the blade was smoking!" says I and Other Neighbour.
"Why's that?" says New Saw Owner.
MORAL: Just because someone is competent in other fields don't assume they automatically become knowledgeable about woodworking machinery.
O.N. and myself took great pains to impress on N.S.O. that what he did was really hazardous to his future wellbeing! We also found out that he didn't get a miter fence with the saw.
Hopefully my old Delta one will fit his Bosch miter slots.