How to Clean & Maintain Your Tin Whistle

Not all whistles have tuning slides. Non-tunable whistles carry one real advantage - their simplicity makes them more robust. But for many players a tuning slide is essential, allowing the whistle to be tuned to other instruments or to account for the changes in pitch that come with environment and temperature.

A whistle will take a lot of abuse, but special attention should be paid to the tuning slide - as it is the only moving part on a whistle. There are various tuning slide materials and designs. Instrument makers across all woodwinds have often preferred the acoustic properties of a metal-against-metal slide, but practical considerations sometimes make plastic slides, o-rings, hemp or PTFE (plumber's tape) the preferred choice.

After every playing session there is condensed moisture in the bore and airway. Left alone, this leaves a residue that builds up over weeks and months and dulls the tone. Some whistle players just let this build up and then do a deep clean every few months, and make that routine work for them. Admittedly, many simply leave it until something seems way off ...and wonder why they didn't do it sooner!

While not strictly necessary, the most thorough cleaning routine is to run a mop through the bore and a pull-through the airway after playing. This takes under a minute, and is certainly what we recommend for high-value whistles like the mk Chameleon - though there is no harm in adopting the same habit for any whistle. The reason it works is that immediately after playing is when everything is moist and easiest to clean. Letting it dry and adhere to surfaces makes it much harder to remove later. We are all familiar with how much more effort it takes to clean dishes after a few hours - or a few days - sitting. The same principle applies here. A quick wipe at the right time is far more effective than a deep clean later.

Add a quick spray of an alcohol-based cleaner to this routine - IPA or methylated spirits. This keeps things clean, sterile, and free from biological growth, which is what causes whistle mouthpieces to start smelling over time. We generally recommend alcohol-based cleaners over water or detergents, because even a small squirt kills germs - this is what hospitals use to sterilise surfaces and equipment.

Instrument maker's note: the main reason we don't recommend washing whistles in water and detergents is that tap water - especially combined with cleaning detergents - can be surprisingly corrosive to metals. The exact chemistry depends on your local water, but for this reason we are careful to avoid normal tap water and household detergents in our Glasgow workshops.

Besides the more widely available alcohol-based cleaners (which work fine), we offer a spray bottle we call Wistol, which comes with our cleaning kits when they are available. The handiest thing about it is probably just the small travel size - it can feasibly live in an instrument case and will last a good long time. Spraying Wistol into the fipple window and cleaning the corners inside the mouthpiece - through the window, with cotton buds - catches exactly the area between what the pull-through and the bore mop reach. It gets into the corners where germs might otherwise build up.

Clogging is quite common in whistles. The key characteristic is that the whistle will play beautifully at first, but the tone will start to break up - usually after 30 to 60 seconds of playing. If you are in any doubt, you can send us a recording and we can diagnose it.

Instrument maker's note: anything that is a permanent feature of the tone, rather than intermittent or delayed, is not due to clogging - it is more likely to be something permanently stuck in the airway (see Airway Obstructions below).

How prevalent clogging is in any given whistle depends on how the mouthpiece is engineered to deal with the moisture in our breath. Some whistles are excellent at moving that moisture away from the airway, so it never interrupts the airflow through it.

Moisture is present in everyone's breath to varying degrees - some people naturally blow with more moisture than others. Sometimes a player's technique develops over time and the amount of moisture in their breath reduces; sometimes it doesn't. For those players, the most important property of a whistle becomes whether it will clog or not when they play.

Even mk whistles, which are designed to be almost completely anti-clogging, do occasionally clog during the period after they are new and before they have been played in. This isn't game over - as the whistle plays in, the clogging magically starts to disappear ...until it's gone completely! The trouble is that during this play-in time, if the instrument is clogging it can be quite uninspiring to play. For this reason we provide an anti-condense solution, which accelerates the play-in time for whistles and is worth trying on any whistle you are having clogging issues with. Instructions for using the anti-condense solution are here.

Instrument maker's note: why does the play-in time, or applying anti-condense, change things? It comes down to whether the airway surface is hydrophobic or hydrophilic. On a hydrophobic surface, moisture forms as discrete droplets - which is exactly what disrupts airflow and causes clogging. On a hydrophilic surface, the same moisture spreads out as a thin even layer instead. Playing the whistle in gradually changes the airway surface to be hydrophilic; anti-condense solution simply accelerates that change.

If a whistle's tone is consistently off from the moment you start playing - rather than degrading after a minute or so - the cause is usually something other than clogging. Most often it is a small obstruction sitting in the airway: a piece of fluff, a fragment of paper from a previous airway clean, or dust accumulated in storage.

It is relatively easy to check. Just look down through the airway. A light held behind the headpiece, or shining through the window, helps to accentuate any obstructions.

If you spot something, the best way to remove it is usually with a needle. Keep the needle parallel to the airway - this stops the point from damaging the airway itself. You also don't want to push the point all the way through to the blade - this isn't necessary, and you risk damaging it.

If the tone is still off after the airway is clear, get in touch. We can diagnose remotely from a recording, and if the whistle does need a workshop service we'd rather see it than have it damaged in an attempt to fix it.

Other than with respect to clogging, whistles tend not to need much play-in time. However, you may find that after a few weeks or months the whistle becomes more stable - particularly in the moments as you pick it up to start playing.

Players have often developed their own techniques for encouraging this stability. A classic is to clear the airway by covering the window and giving a short sharp breath. This delivers a pulse or burst of air which dislodges any moisture droplet sitting in the airway - droplets that often form when a cold instrument meets warm breath and condensation occurs. Playing the whistle will often dislodge the droplet anyway by pushing it through the airway, but this can take a moment longer. The pulsed-breath technique is how many whistle players encourage that stability from the off, before the whistle is warm.

In fact, players have often subconsciously developed their own warm-up routine for a whistle. Typically this is a combination of long breaths through the covered window (which are more effective at warming the headpiece) and short breaths (which keep any moisture droplets moving through the airway).

With high whistles it can be possible to push the whistle far enough into your mouth that your lips cover the window, at which point either short or long breaths can be used.

Whistles are made from a range of materials, each with its own properties and care considerations. The body of most mk whistles is anodised aluminium and tuning slides on larger keys are brass. Below is a broader look at the materials you'll encounter across whistles in general.

Whistles are forgiving instruments to store and travel with, but a few principles will keep yours in good shape over years and decades.

Most whistle care is something you can do at the kitchen table. Hopefully this guide has been useful. We also have a library of articles and videos on our YouTube channel. For anything else, please do get in touch.