Broken pull-out kitchen mixer tap

The pull-out kitchen mixer tap has just snapped off leaving its rear end in the hose connection.
http://tinypic.com/r/5p28uf/5
There's not enough to grip with pliers and wrapping a suitably-sized dowel in non-slip mat didn't produce enough torque. I thought I might be able to cut some slots in the plastic to screw it out but it's hard to get a deep enough groove.
So can anyone suggest a way to remove the threaded remains?
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mike wrote:

Use a screw extractor - basically a coarse, tapered lefthand thread tap selected to suit the ID of the part to be removed
A standard engineering tool
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Or maybe melt it a bit?
Brian
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On 02/08/2013 21:56, mike wrote:

I had the same with a shower once, used closed pliers shoved in the hole, lots of pressure pushing into the hole, and anti-clockwise rotation, seemed to do the job...
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mike wrote:

Find or make a bit of square steel that is slightly bigger diagonally, jam it in and turn.
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Tap a wood chisel or similar slightly oversized metal blade into the hole and unscrew by gripping the blade with pliers etc.
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On Saturday, August 3, 2013 7:52:00 AM UTC+1, harry wrote:

Thanks for all the excellent suggestions, folks.
Harry's was the one wot done it. Strap wrench on the hose end, wood chisel in the broken tail.
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