Rejection, or Why Not?

By Steven A. Wasser

President, Verne Q. Powell Flutes, Inc.

Several of our current headjoints, including 10k gold, 14k gold, and platinum.

Most of our blog articles affirmatively describe things we do.  However, as instrument makers one of our responsibilities is to decide what not to do. 

We recently conducted some experiments with a precious metal alloy that is 95% silver and 5% platinum.  Our hypothesis was that this alloy would provide some substantial acoustical benefits over sterling silver, such as a darker tone and improved response. 

Since the headjoint is the most critical acoustical component of the flute, we started the 95/5 experiment with the headjoint.  We ordered thousands of dollars’ worth of 95/5 tubing, flat stock for lip plates, and casting grain for walls (this stuff is considerably more expensive than sterling silver!).   

In order to control as many variables as possible, we used our existing designs and simply varied the material.  After making several headjoints with the 95/5 alloy we reached a conclusion – no.  Although it might seem counter-intuitive, the silver alloy with 5% platinum was very soft.  Neither the lip plate nor the tube wanted to stay where we put it.  We also found little acoustical difference. 

The softness of the 95/5 alloy was a knockout factor, but we also concluded that we have plenty of precious metal choices already available with sterling silver, several versions of Aurumite, and 9k, 10k, 14k, and 19.5k gold.  Unless the 95/5 offered something special and distinctive, which in our view it didn’t, there was no point in adding another material.

So now you know about something we tried and decided not to do.  All the 95/5 material we ordered and the headjoints we made are being melted down for us by our refiner.

75th Anniversary Flute

When we stopped in to the repair office this week, our technician had one of the 75th Anniversary flutes in for a COA -- so we thought it would be a good opportunity to share more information on these flutes.  Powell Flutes celebrated its 75th anniversary in 2002, and in honor of the landmark, offered limited edition "75th Anniversary" Custom flutes.  There were a total of 25 anniversary flutes made.

For this special edition, customers had the option of sterling silver, Aurumite 14k, 14k gold, or platinum bodies. Mechanism materials and other options were consistent with today's Custom flutes, which you can see by clicking here to view our online spec chart.

The 75th Anniversary flutes did have several special features including gems, special engraving, and anniversary ring designs.  Silver flutes came with a ruby inset in the upper barrel ring and crown.  Aurumite, gold, and platinum flutes had a diamond inset in the upper barrel ring and crown.  All flutes had the 75th anniversary logo engraved on the barrel and the 1930s style flat anniversary rings.  An additional feature that was optional on 75th Anniversary flutes was a special lip-plate engraving, described as "Anniversary style lip plate engraving, a brilliant realization of a 1930's Verne Q. Powell original."  Each flute also came with its own Certificate of Authenticity, which listed the flute's complete specs and was signed by Powell President, Steven Wasser.  The anniversary flute we spotted in the shop was silver, as you will see in the photos below (along with an example of the lip plate engraving).

75th Anniversary lip plate engraving

75h Anniversary silver barrel with ruby inset, Anniversary logo, and 1930's style flat rings

75th Anniversary silver crown with ruby inset

Closer view of the crown

Side view of the crown (which also had the 1930's style ring)

The Gold in a Gold Flute

By Steven A. Wasser
President, Verne Q. Powell Flutes

The prices for precious metals have skyrocketed over the past few years.  In this environment it’s easy to get fooled into thinking a flute has more gold than it really does.  So here are some tips on evaluating “gold” flutes:

•  “Solid Gold” generally means that the flute has been made from some version of karat gold ranging from 10k to 24k.  An item that is 24k karat gold is comprised of 100% gold - 14k contains 58.4% gold.  The rest of the 14k gold alloy could be any combination of precious metals (like silver or palladium) or base metals (like copper or nickel).  The metal content in the alloy often varies by manufacturer.

•  “Low Karat Alloys” with less than 10k of gold are becoming more common as the price of gold rises.  For Tiffany’s 175^th anniversary they introduced a low karat rose gold alloy they have trademarked as “Rubedo .”  This is a growing trend as manufacturers are looking to provide flutists with gold instruments at more reasonable prices.

•  "Gold Filled” items are essentially laminates, where the outer layer is gold that has been bonded or fused to an inner layer of lesser metal such as silver or brass.  In America, the FTC regulates the labeling of gold filled products.  For example, if the item is 14k gold filled the gold content must be at least 1/20 of the total weight of the item (5%) and can thus be marked, “1/20 14k GF.”

•  “Gold Clad” is a variation on gold filled.  Unlike “Gold Clad” instruments, Powell’s patented Aurumite® consists of a relatively thick layer of gold which can be on the inside or outside of the tubing.  For example, in Powell’s 14k Aurumite the inner layer of gold represents approximately 22% of the tubing weight and is 58.4% gold.  So 58.4% of 22% is about 13%, which is several times more gold than one would typically find in a gold filled product.

•   “Gold Plated” instruments have a microscopically thin layer of gold that is electrically or chemically deposited on a sub-strata of a lesser metal, such as sterling silver or nickel silver.  Plating can be measured in microinches or microns.  1 microinch (0.000001”) = .0254 microns, and the number of karats in gold plating can vary.  The FTC defines “heavy gold plate” as at least 2.5 microns which would be 0.0001.”  By comparison the layer of gold in an Aurumite flute is typically a minimum of 0.003,” which means Aurumite has roughly 30 times more gold than a gold plated flute tube.

 Table 1.  Comparison of Gold Content for 14k

14k Metal                               Gold Index

Solid gold                              58.4

Low karat gold (5k)             20.8

Gold clad                               12.8

Gold filled                             2.9

Gold plated                           0.5

If you want gold in your flute for its acoustical properties related to density, then you should look at instruments which have a higher content of gold.  A solid gold flute will be the most content, followed then by an Aurumite 14k. It is generally agreed that the most important metal to affect the sound is that which comes in contact with the vibrating column of air.  If your primary concern is tarnish or aesthetics, then a plated or clad flute is going to be much more economical.  Keep in mind though, that plating can wear off over time, whereas an Aurumite flute tube with gold on the outside is extremely durable.  Powell Flutes has offered Aurumite flutes for over 25 years and have an excellent track record of quality performance.

9K Aurumite Conservatory - Gold on outside

14K Aurumite Custom - Gold on inside

Aurumite Headjoints - Gold on outside, gold on inside

Gold plated Sonare

Custom Powells in gold - Top to bottom of photo: 9K, 14K, 19.5K