Hello!
I'm in the process of building a greenhouse from a pre-fabricated kit. I've built up a base two bricks high to attach the steel foundation to. I've filled the holes in the bricks with mortar mixed from one part gullex and two parts sand, adding more water than usual to make it easier to fill the holes.
Anyway, now to my problem. I need to drill holes into the bricks and use universal plugs to secure the foundation. Then this happened!! The brick cracked! What technique should I use to make 8 mm holes in brick without it cracking? I used a hammer drill and an 8 mm bit. I also have a regular drill and a jackhammer if that helps.
Here, I can remove the cracked brick and lay a new one. But the foundation still needs to be fastened later. I don't want to keep replacing bricks constantly. That would drive me crazy.
Please help me.
Drill with a masonry/brick drill but without the hammer function, only rotation. It will take longer but won't crack. Otherwise, a regular hammer drill usually works in brick. Do you have a hammer drill or a rotary hammer? A rotary hammer is futile in brick, it will just break the brick.
Feel free to try on a loose brick until you are confident that it works.
Drill with a stone/brick bit but without the hammer function, just rotation. It will take longer but it won't crack. Otherwise, it usually works with a regular hammer drill in brick. Do you have a hammer drill or a rotary hammer? Rotary hammers are useless in brick, they just break the brick.
Feel free to try on a loose brick until you feel confident it works.
I guess it's a rotary hammer then...
There's a switch between hammer and rotation+hammer. Now I've bought two stone/brick bits from Bosch. A 3 mm to make a guide hole and an 8 mm for the final size. I'll do as you say and practice on a loose brick. I'll get back with the results.
Yes, now I have made another attempt. 3 mm stone drill in my regular screwdriver, on the lowest gear. Then an 8 mm stone drill afterward. The drill was cooled down in a glass of cold water between sessions. It worked well. I blew out the holes with a straw. And I did NOT forget the personal protective equipment here! Namely a disposable plate with a hole in the middle where you put the straw. Very important! Otherwise, you end up looking like Björn Ranelid afterward.
The plug went in with some gentle persuasion from a hammer.
Today I will attach the foundation. It will be exciting to see if the brick holds for it. But I believe it will. It was probably the hard blows from the hammer drill that cracked the stone, not the force itself.
Click here to reply
Vi vill skicka notiser för ämnen du bevakar och händelser som berör dig.
