Hello

I need to make a hole, about 500mm in diameter, from the basement up to the ground surface, which should have a slope of about 45 degrees. The problem is that I have a basement wall I need to get through. It consists of concrete, natural stone, and brick. Since it's a relatively small area I need to get through, I want to do it as cheaply as possible. I tried using a large crowbar and hit it against the wall, which worked, and I made a small hole. But doing the whole hole this way would be too exhausting.

So now the question is, how can I do it as cheaply as possible? Is it possible to buy a large sledgehammer and hit there, or would it be worse/the same as using the crowbar? Rotary hammer, model Jula that can chisel, anyone tested it? Finally, I could buy a jackhammer, but as I said, I want to come away as cheaply as possible. Or are there other ways?

We don't need to consider renting. I don't have a place nearby to rent from, and if I were to rent, I would need to rent the machine for at least two days, and then I might as well buy a rotary hammer or jackhammer at Jula.
 
M
Okay, I would probably advise against a sledgehammer right away because it causes such a violent shockwave. Who knows what might be shaken loose/broken a few meters from the epicenter?

I would probably use a Jula drilling hammer and drill holes in a circle through the wall. Maybe Jula also has long drill bits? Preferably a 20mm drill bit. Then chip out pieces using the chisel function and possibly the spade that comes with the machine... It just takes a heck of a long time, and prepare to pay a bit with vibration issues in your hands for a week instead of money if you think it's worth it...

edit: Natural stone, hmmmm it might be too hard for the Jula drilling hammer actually, how thick is the layer of natural stone?
 
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Real7 said:
I saw yesterday that Jula has a good price now. It's perfect for a reasonably sized job so it lasts the whole job, then sell it on blocket for a few hundred bucks.
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I actually have that one, it lasted for 25 sqm basement floor, demolition of a concrete support wall, etc. It's still alive.

But for this job, I think it's a bit too big and heavy, it's hard to keep it against a wall properly. I agree with MaxPax about a drilling hammer, drill a number of holes, then chip away the in-between.
 
Oh yes, now I see that it weighs 16kg. Then maybe two are needed :D
 
It ended up being one of these: http://www.biltema.se/sv/Verktyg/Elverktyg/Borrhammare/Borrhammare-850-W-17169/

It seems to be doing its job as far as I've gotten so far. I originally wanted Jula's drill hammer, which is much more powerful, for 799:- but it was out of stock until the end of February. It turned out that Biltema's worked anyway. I apparently had quite the advantageous material in the walls. There was a 10-20mm layer of concrete on the outside, then a mix of natural stone and brick inside. If it had been solid concrete the entire meter that my walls are, it probably wouldn't have been as fun with this drill hammer.
 
How good... For your information, Hornbach sells a 950W unit for around a thousand that is slightly more powerful than Biltema's.
 
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