Quote Originally Posted by Steven W View Post
It's a basic Chinese machine. I didn't want to spend a lot of money on something that didn't suit what I was doing. The table is 300x400 and the models I cut are from a blank 300x300. The spindle is 1.5kw water cooled. One of the issues I have is getting the 6mm cutter Far enough into the Collet. The cutter that came with the machine is exactly 6mm and fits great but bits you buy in the UK are quarter inch. I struggle to get the bit far enough up the collet to screw the lock nut on. This may be causing the chatter?
You should never force a 1/4" shank into a 6mm collet or clamp down a 1/4" collet onto a 6mm shank... You'll either damage the collet, the bit won't run true, damage the spindle with the out of balance load or all the above.

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