i need to get a tumble dryer vent hole from my kitchen to outside. Anyone got an idea what equipment I need to do this or the cost for getting it done.
As in earlier post, just hire core drill & 107m core bit. Washing machine vent pipe is usually 100mm diameter, so a 105mm or maybe better a 107mm core drill will give a bit of wiggle room, also drill at a slight downward angle to the outside, that will allow any moisture to run out , rather than lie in the pipe.
Buy a condensing tumble drier. No hole needed and no hire of kit and making good needed. Sell old machine on Scumtree.
Strongly second BMC's reply, hole in the wall is daft unless you have free heating. Give old M/C away (freecycle.org?), nobody pays for that old stuff nowadays.