Saturday, August 13, 2011

Stuck Piano Keys - the dreaded Plastic Piano Parts Experiment


!±8± Stuck Piano Keys - the dreaded Plastic Piano Parts Experiment

Pianos ages very similar to humans. If you properly care for your body with exercise, proper diet, and you dress for the weather, you can still vigorous and active in the 80s and beyond. On the other hand, if you can give enough abuse from a variety of ailments even before the 40 birthday has died.

A well-built piano is kept in humidity controlled, and maintained regularly played the point, can still work and sound good to his 100Birthday. But if you leave the plan in a garage without air conditioning and have never been there were voices, and no maintenance, would become a useless pile of scrap in a few decades.

Given all this, a piano built in 1947 should be in good shape. You will be surprised and alarmed to find him playing a single day, refuses to start after the keys may reappear press down. One by one they fall and not rise until they are afraid ofcontinue playing.

What has happened?

In fact, if this happens to you just now, I'm very happy. It should then be passed in 1980. Of course, many pianos 30 years without playing, so it is relatively common for people to discover this problem suddenly now.

What happens is very likely that you will discover the hard way that the mechanism of the piano, one or more types of testing the plastic, which contains between 1947 and servedabout 1953

It all started in what seemed a very good scheme to save time and money. There are hundreds of small pieces of wood carving and everyone in every plank of wood, with a cutter to make lots of bandwidth, is relatively expensive. Someone has discovered that these new plastic materials can be injected into molds made from soy and once set, the plastic has the weight, strength and flexibility are very similar to wood and plastic partsnever distorted changing humidity. That was very exciting news, the producers of piano mechanism such as Pratt and reading, whose mechanisms (so-called "actions") were used for the spinet piano console size from dozens of reputable companies, and began well beyond the plastic parts, believing they were not only cheaper, but better than wood parts.

It would have been correct. Unfortunately, the formula had not yet formulated for plastics in 1950, and within10 to 30 years all the good parts began to crystallize and lose their moisture in the air. Literally, they began to decompose back into the power of soybeans, which were originally produced.

What can you do?

That your 1950-vintage spinet or console piano with plastic parts can be fixed cheaply or not depends on how the action was enthusiastic about using plastics manufacturer. Most affected are spinet pianos size (the fastest type of piano)most of which only one type of plastic parts, so-called "drop-wire elbow".

Doing detective work

You can determine if the plan Spinetta plastic elbow with the opening of the bottom plate. This is the final advice of calcium that extends vertically upward from the one under the keyboard and pedals from the floor. Housing designs vary, but in almost all cases there are one or two springs to keep the card in the up position under the keyboard. Compress the springhand and the card only has to slide forward so you can lift out of your way.

The blades start at the ends of wooden keys, and extend about a foot. They screw into the tops of the elbow, the mechanical movement of the keys to transfer the action. If you have a plastic elbow and cracked or broken, you will know immediately because there will be a mess down there. The plastic pieces are divided into fragments dusty yellowed. They are literallyable to crush the remaining pieces of dust between the fingers.

At this point you should have a technically qualified and experienced. It can certainly be able to save wasted the elbow (nylon) for the purchase less than $ 100 and install it yourself, but that means time and money, although in other parts of the very fabric of the plastic is fragile.

If you're not an adventurous do-it-yourselfer, you can use the technical plan to replace the elbow, butexpect to pay about $ 200 - $ 300 in labor costs, the cost of parts. If the piano is a family heirloom, you may want to invest in conservation. However, it is unlikely that a common cost spinet piano was 60 years ago is the resale value sufficient to justify such repairs.

It should be noted that some Japanese manufacturers with parts in plastic and nylon back from the piano action began in 1970. The parties have not shown signs of prematureAgeing and still going strong.


Stuck Piano Keys - the dreaded Plastic Piano Parts Experiment

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