Cutting bricks with a grinder.

[bluenun20]

I am going to take out a window in the garage and cut out the rest of the bricks to fit a door.

The bricks are 100mm thick, my angle grinder takes a 100mm blade but the body of the grinder will hit the wall and only cut 75mm deep, even if the body of the grinder did not hit the wall, the piece that holds the blade in place will stop the cut short by 5mm.

Is there an alternative to hiring a bigger petrol disc cutter?

 

[noseall]

I am going to take out a window in the garage and cut out the rest of the bricks to fit a door.

The bricks are 100mm thick, my angle grinder takes a 100mm blade but the body of the grinder will hit the wall and only cut 75mm deep, even if the body of the grinder did not hit the wall, the piece that holds the blade in place will stop the cut short by 5mm.

Is there an alternative to hiring a bigger petrol disc cutter?

No. You need a 12"(300mm) disc to cut through 100mm, whether that is petrol powered or powered by cow farts, you still need a 12" disc cutter.

my angle grinder takes a 100mm blade but the body of the grinder will hit the wall and only cut 75mm deep,

I have yet to see an angle grinder that will cut 75mm deep with a 100mm blade.

The top notch way to do it is to take out all the halves and re-lay new ones so that you show good ends on the jambs. However, if you have solid bricks then things wont look so bad. Otherwise you may have to fit some crappy plastic trims up the jambs to hide the perf' or frog hollows that will be on show.

You may also suffer a bit of perp' trouble on the full bricks, if they are not all lining up.

 

[bluenun20]

Thanks for the reply.
Good tip about taking all the half bricks out, I will do that.

Sorry for the confusion, I currently have 230mm blade in, I could use that to cut the majority of the way through and then buy and fit a 300mm brick cutting blade to finish it off.
I would need to take the guard off to fit the 300mm blade.

I have added a couple of pictures to the album.

 

[kazuya]

cut from the front then cut from the back?

 

[theprinceofdarkness]

Cut from the front if you want the straight line there. You will not be able to cut right into the corners with a big blade, just think about it.
Frank

 

[phatboy]

I would need to take the guard off to fit the 300mm blade.

So you have a death wish? Use the right tool for the job!!!!

 

[^woody^]

For this job, you can cut the face with a 9" disc saw, and then use a hammer and bolster to chop the brick vertically from the top, and it snaps nicely.

The frame then covers the rough cut

 

[cjard]

Or you can cut the last bit on an angle into the wall(if it's cavity) and then mortar up the gap and fit the door over the ugly

 

[bluenun20]

Thanks for the replies.

Yes taking the guard off was a stupid suggestion.

 

[saladdays]

How about a concrete saw? Like this one:

http://www.screwfix.com/p/stanley-fatmax-cellular-concrete-panel-saw-1-4tpi-25-650mm/96879