A bowl that once sang and now buzzes, or produces a dull thud where there used to be a long tone, has usually developed a specific fault. Before assuming the worst, it is worth working through the possibilities, because most dead sounding bowls are not damaged at all.
Rule out the easy causes first
Four things produce a dead sounding bowl and none of them is damage.
Something touching the bowl while it rings, most often a hand gripping the rim rather than supporting the base, or the bowl sitting directly on a hard surface without a cushion.
The wrong striker, either too light to excite the bowl or worn smooth so it cannot maintain friction.
Technique, particularly rimming too fast, which produces a chatter rather than a tone.
And residue on the rim, which is easily missed. Oil, dust or cleaning product on the rim or the striker prevents the friction rimming depends on. A wipe of both with a dry cloth solves a surprising number of cases.
Our guide to choosing a striker covers these in detail.
How to check for a crack
If none of the above explains it, test properly.
Hold the bowl by the very edge of the rim between two fingers, so it hangs freely with minimal contact, and tap it gently with a fingernail or a light striker. A sound bowl gives a clear ringing note that continues. A cracked bowl gives a short dull buzz that dies almost immediately.
Rotate the bowl and tap at several points around the rim, since a crack may only be obvious when struck near it.
Then look. Hold the bowl to a strong light and examine the wall inside and out, particularly around the base and where the wall meets it, which is where stress concentrates. A hairline crack often appears as a fine dark line that does not follow the hammering pattern.
What causes cracks
Impact, almost always. Dropping a bowl, knocking it against another bowl, or stacking bowls inside each other where they can shift and strike.
Hand beaten bowls are work hardened by the hammering that shapes them, which makes them strong but also means the metal has limited flexibility. A sharp knock in the wrong place cracks rather than dents.
Thermal shock is the other cause, from pouring boiling water into a cold bowl or leaving one in strong direct sun and then cooling it quickly.
Can a cracked bowl be repaired
Honestly, no. Not in a way that restores the sound.
The tone depends on the whole wall vibrating as a continuous structure. A crack interrupts that, and any filling or soldering introduces a different material with different properties into the vibrating surface, which changes the sound as much as the crack does.
A cracked bowl remains a beautiful object and can hold water, keys or incense perfectly well. As an instrument it is finished, and it is better to accept that than to spend money on a repair that will disappoint.
Thinning from over polishing
The slow failure, and the one people cause themselves. Years of vigorous polishing gradually removes material, thinning the wall and smoothing the rim.
The symptoms are a bowl that has become brighter in pitch than you remember, sustains for less time, and has become harder to rim. There is no fix, which is the argument for cleaning gently, as covered in cleaning a singing bowl.
Storage damage
The commonest preventable cause. Bowls nested inside each other move against one another with any handling, and the contact points chip and eventually crack.
Store bowls separately, or with cloth between them if they must nest. Keep them off the edges of surfaces where a knock will send them to a hard floor, which is how most bowls actually die.
Testing before buying secondhand
If you are buying used, or from a market stall, the hanging tap test above is the whole check and it takes seconds. Hold by the rim edge, tap, listen for a sustained clear note.
Also run a finger around the rim feeling for chips, which affect rimming even without a crack, and check the base sits flat rather than rocking, which can indicate it has been dropped.
Buying new from our singing bowl range removes the question, and every bowl arrives in a condition to be checked on the same principles.
Questions people ask
How do I know if my singing bowl is cracked?
Hold it by the very edge of the rim so it hangs freely and tap gently. A sound bowl gives a clear sustained note; a cracked one gives a short dull buzz. Tap at several points around the rim.
Can a cracked singing bowl be repaired?
Not in a way that restores the sound. The tone depends on the whole wall vibrating continuously, and any filling or soldering introduces different material into the vibrating surface.
Why has my bowl gone quiet without any crack?
Usually contact damping it, a worn or mismatched striker, rimming too fast, or residue on the rim. Wiping the rim and striker with a dry cloth fixes a surprising number of cases.
What causes a bowl to crack?
Impact, most often from dropping, knocking against another bowl, or stacking bowls that shift and strike each other. Thermal shock from boiling water in a cold bowl is the other cause.
How should I store singing bowls?
Separately, or with cloth between them if they must nest, and away from the edges of surfaces. Nested bowls moving against each other is the commonest preventable cause of damage.
