Evening chaps (and chapesses) Got to go back next week to extend a run to a fridge, it's the standard 1/4" piping that most water supplied fridges use. Can't ever remember extending a run though so have a question if anyone knows the answer. Only need a couple of meters adding and the current pipe runs round a corner, behind units and a cooker so would like to add to it rather than replace the whole run. I can see that there are 1/4" couplers available, but do I need inserts? There are none on the connection to the filter or the connection to the fridge. The pipe walls are comparatively thick so will probably hold shape without inserts. Anyone know?