I have received a couple of windowsills from my neighbor, and I have matching sills in my house from 1968. Are the windowsills marble or asbestos?
They are very nice and polished on the top with fossils and everything, while the underside looks completely different. The windowsills are very heavy. I think the fossils suggest it's marble, but does the underside look like this then? I assume the black spots on the underside where the brackets have been are black glue...
What is the best way to cut them? They are supposed to sit next to each other under a double window, but they are about 1 meter too long with the current length.
It is limestone, and you can cut them most easily with a diamond blade on an angle grinder. Preferably outdoors with a face mask. Even if it had been asbestos cement, you could do it the same way; asbestos is not particularly dangerous if you do not inhale dust without a face mask for a long time.
Oh, limestone! That sounds at least as nice as marble (and much nicer than asbestos cement)!
Then it's off to shop for an angle grinder and diamond blade. Cutting is not something you can do with a miter saw, is it? The angle grinder might be needed for grinding/polishing anyway?
Oh, limestone! That sounds at least as nice as marble (and much nicer than asbestos cement)!
Then it's off to shop for an angle grinder and diamond blade. Because cutting can't be done with a miter saw, right? The angle grinder might be needed for grinding/polishing anyway?
buy a fine-toothed one. thought I'd grind polish by hand.
Even if it had been asbestos cement, you could have done it the same way, asbestos is not particularly dangerous if you don't inhale dust without a mask for a long time.
It's also fine to tinker with electricity without turning off the power. Electricity is not particularly dangerous if you don't touch live parts.
It's also fine to drive a car without a seatbelt. It's only dangerous when you crash.
A bit off topic, but even if an eagle crashes into your head and rips off your mask while you've just sawn through a massive cloud of asbestos dust and in pure fright you take the deepest breath you've ever taken in your life right in the cloud, it's not measurably more dangerous than smoking a pack or two of cigarettes. The examples you've given would kill you if they go wrong, so perhaps it's not quite comparable?
If you can cut the boards calmly and without drama, or alternatively outsource it:
How good a cut surface on the boards can you expect? Will it be good enough to place them next to each other, so that they appear as a single windowsill?
It's a double window they are to be placed under, but one of the windows has a ventilation flap beside it. Under the third adjacent window (which is a bit higher), the windowsill also goes under the ventilation flap. So then it would probably be best if these also extend that far. But then the lengths of the windowsills will be different, and I think it stands out particularly well if they look like two separate windowsills. Therefore, I'm considering placing the cut surfaces against each other so that it looks like one long board.
A bit off topic, but even if an eagle crashes into your head and tears off your face mask while you've just sawed up a massive cloud of asbestos dust and in sheer panic take the deepest breath you've ever taken in your life right in the middle of the cloud, it's not measurably more dangerous than smoking a pack or two of cigarettes. The examples you have given will kill you if they go wrong, so perhaps it's not quite comparable?
Asbestos is actually more dangerous than that. There is a thread about how dangerous asbestos really is. An example I remember from that thread is that if you cut the worst form of asbestos (crocidolite) with an angle grinder for 8 hours without protection, it is equivalent to smoking a pack of cigarettes a day for 60 years in terms of danger. The least dangerous type of asbestos (chrysotile) is equivalent to only 6 years of smoking.
The deep breath described here should therefore equate to somewhere between 2 and 250 packs of cigarettes, depending on the type of asbestos.
If the boards can be cut calmly and without drama, or alternatively outsourced:
How good a cut surface on the boards can be expected? Will it be good enough to place them against each other, so they appear as a single windowsill?
If you go to a stone cutting workshop (or "tombstone manufacturer") they can cut with a water-cooled diamond blade. This results in a very fine cut. Theoretically, it's possible to make the two slabs look like one, but in practice, it can be a bit tricky.
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