drilling 4" holes for fans

[livelounge]

recently i have been been coring holes for bathroom fans through outside walls and been taking ages to do it upto an hour when it should only take 25mins at most do you recon i should start drilling it on hammer with the diamond core bit allthough it can screw the bit up i am using a makita 8406

 

[High Tower]

at a temple, two buildings faced with a decorative wall made of engineering bricks, so 4" inner skin, cavity, 4" common, 1" rough cast, cavity, 4" outer skin built with engineers

4x 6" cores, took two of us on rotation a whole day.

Never again!!

 

[Knobhead]

Your all wimps, get an Atlas Copco drill.

View attachment 8280

I don’t think I could lift one now.

 

[kung]

One of these ?

 

[JamesBrownLive]

View attachment 8282

One of these ?

Forget that, its time for....



:34:

 

[Rockingit]

I spent about 30 mins each doing two 2" cores today, and that was with a new core and only single skin engineering block. I started to think about drilling it instead! It just takes patience sometimes.