I want to remove the old phone jack on the wall in the kitchen and plaster up the hole.
My question is, is it safe to just cut the wire and push it back into the cavity before I cover over it?
I just got NBN connected so the old phone line is now redundant.
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These wires have a small amount of current running through them so best to leave it intact and push it into the wall.
As for patching, you can also purchase a a patch from Bunnings, add some multi purpose compound over a few days with drying and sanding in between, and a lick of paint will bring it back to brand new.
This is a link to the pre-made wall patch sold at Bunnings:
If you have any questions on how to use these, have a chat to either your paint or DIY team member at your local Bunnings warehouse.
Here is a link to using a more traditional method to repaire holes in plaster: