Any of you used one of these

[Plouasne]

If you have a lot of chaseing to do, it dont half save the time if you use on of these machines, it will cut a chase 45 mm wide and 35 mm deep

rainureuse hitachi CM 7MC

 

[evsy01]

ive used one. id only recommend on new builds as they are extremely dusty

 

[WHPES]

I have seen them used and afterwards, EVERYTHING is covered in about 1/2 an inch of dust!

 

[Plouasne]

They should be used with an industrial vacuum cleaner attached to the machine, but there is still a bit of dust around, but I reckon that its worth it if there is a lot of chasing to be done

 

[Billy Bob Bob]

it will be top notch as well being hitatchi

 

[oldplumber]

used one or similar when renovating/converting a load of flats i owned. Only used it for wiring as i try not to bury my pipework in plaster if possible, always seem to get call backs for leaks caused by picture hooks. I found industrial vacuums just cant cope as there is to much dust, so on mask and goggles and open the windows!!!!!!!!!!!
I dont think id ever use one in someones house where they are still living as u would be in sooooooooooo much **** with the lady of the house.