David Stanwood will be giving the following presentations on:




SCROLL DOWN FOR MORE EVENTS

Southern California mini convention March 18-19, 2017
To be held in Riverside, CA
https://socalptg.com

Two Classes by David Stanwood

Class I  -  Balancing Hammer Weights for a more Perfect Action

Stanwood simplifies the most important and overlooked aspect
of piano action design - matching Hammer Weight with Action Ratio.
The subject can seem daunting.  The message is clear:  Most of what
the pianist feels when playing goes into moving weight of the hammer. 
It’s time to face the music!  New insights will show that you can meet
the challenge and balance actions more perfectly - simply, directly,
and without a computer.

Class II  -  Essential Elements of Touch and Tone.

Stanwood shares his insights from 40 years of pushing the envelope and
striving to make it easier for pianists to draw magic from pianos. 


February 21, 2017
Boston Massachusetts
Boston Chapter Monthly Meeting
Brandeis University, Waltham, MA
http://www.bostonptg.org/home.htm

Matching Hammer Weight with Action Ratio by Presetting Key Weights.
By David Stanwood    PTG Brandeis Feb. 2017

Stanwood will present a simplified approach for balancing actions
that automatically creates a match between hammer weights with action
ratio.  By this method one may create a desired dynamic touch without
complicated measurements.  No computer needed.  Key weights are set
once and for all using the digital scale method. Final balancing of the
keys is accomplished by weighing off the hammers to standardized
specifications.  This class gives new meaning to the old adage: “Don’t
touch those weights in the keys. They were installed in the factory!”

April 16 -18 2016
Auckland New Zealand
Mini Convention with David Stanwood
sponsored by the Piano Tuner & Technicians Guild of New Zealand
http://www.pianotuner.org.nz/index.html


February 16, 2016
Boston PTG monthly meeting
Brandeis University

Presentation of the latest software for Precision Touch Design
component analysis and calibration.

July 15 - 18
2015 PTG Technical Institute and Convention
Denver Colorado

Mock Up and Get it Right
by David Stanwood & Boaz Kirschenbaum  1.5 hrs

Mocking up sample Hammers, Shanks, and Repetitions
in the action is the surest way to guarantee best results
when replacing parts.  Stanwood and Kirschenbaum
bring together their wisdom and experience to create a
multimedia compendium covering the essential aspects
of this important subject.   Their "pre-flight" checklist
addresses action geometry optimization, regulation
checks, clearance issues, and hammer weight/ratio/tone
selection.

Touch Weight Velocity 
by David Stanwood 1.5 hrs

This class looks into a new approach for measuring
touchweight which uses a photogate timer to accurately
measure the amount of time the hammer takes to travel
between two points.   This method has the potential
to provide a more relevant and repeatable measure of
touchweight by using faster hammer speeds than the
conventional down/up weight measures and it eliminates
rapping on the frame to start the hammer moving.

April 23 - 26 2015
PTG Mid Atlantic Regional Convention
Philadelphia Pennsylvania

Mock Up and Get it Right

by David Stanwood & Boaz Kirschenbaum  1.5 hrs

Mocking up sample Hammers, Shanks, and Repetitions
in the action is the surest way to guarantee best results
when replacing parts.  Stanwood and Kirschenbaum
bring together their wisdom and experience to create a
multimedia compendium covering the essential aspects
of this important subject.   Their "pre-flight" checklist
addresses action geometry optimization, regulation
checks, clearance issues, and hammer weight/ratio/tone
selection. 

February 17, 2015 7:30pm
PTG Boston Chapter meeting
Brandeis University - Music Building

Mock Up and Get it Right
by David Stanwood & Boaz Kirschenbaum  1.5 hrs

Mocking up sample Hammers, Shanks, and Repetitions
in the action is the surest way to guarantee best results
when replacing parts.  Stanwood and Kirschenbaum
bring together their wisdom and experience to create a
multimedia compendium covering the essential aspects
of this important subject.   Their "pre-flight" checklist
addresses action geometry optimization, regulation
checks, clearance issues, and hammer weight/ratio/tone
selection. 


July 16,-20, 2014
PTG Annual Convention and Technical Institute 2014
Atlanta, Georgia

Hammer Weight Balancing

David Stanwood, Stanwood Piano Innovations Inc.

Choosing and using the right hammer weight has
proven to be the most important component of
action design. This two-period class will cover all
aspects of hammer weight including its history,
studies and analysis, voicing, pitfalls of using
replacement hammers "off the shelf", what the
experts use, and current methods for making and
installing specifications with or without a computer.

Mr. Stanwood will also be presenting his scientific paper:
"Down Weight vs. Equation Key Balancing:
Shifting the Paradigm

April 24 - 27, 2014
NEECSO Boston PTG 2014
Burlington, Massachusetts

Hammer Weight Balancing

David Stanwood, Stanwood Piano Innovations Inc.

Choosing and using the right hammer weight has
proven to be the most important component of
action design. This two-period class will cover all
aspects of hammer weight including its history,
studies and analysis, voicing, pitfalls of using
replacement hammers "off the shelf", what the
experts use, and current methods for making and
installing specifications with or without a computer.

Mr. Stanwood will also be presenting his scientific paper:
"Down Weight vs. Equation Key Balancing:
Shifting the Paradigm


March 28, 2014 at the Banff Center for the Arts
Banff, Alberta, Canada


Full day seminar on Precision Touch Design

Contact: Lee Post, RPT
lapost@shaw.ca, 403-678-6080

February 19-22, 2009 at the California State Piano Technicians Guild Conference
Burbank, California
http://www.calstateptgconference.com

CLASS 1: THE IMPORTANCE OF HAMMER WEIGHT AND ACTION RATIO

The effect of Hammer Weight on tone and touch is
profound. Matching hammer weight with action ratio is critical. This
multi media class will cover essential issues surrounding the use of
light, medium, or heavy weight hammers including: a review of current
methods for measuring, analyzing, and improving hammer weights and action
ratios. There will also be presentation of recent research comparing
Weight Ratios with Distance Ratios and a discussion about why they are not
always similar to each other. The class will interactively investigate
the effects of changing hammer weight by evaluating the touch and tone of
a piano in the classroom and then assessing the change cause by clipping 1
gram weights onto each shank.

CLASS II: FACTS AND FRICTION

The positive effect of all your good work in restoring, regulating,
tuning, and voicing the piano can be erased if the keys are difficult to
play because of friction problems in the action. This class offers a
complete overview on the subject of friction and its important effect on
the playing quality of pianos. Learn how much friction is too much or too
little and about all the ways you can measure and control friction
components in piano actions.

April 23-26, 2009 at the Mid Atlantic Regional Conference of the Piano Technicians Guild
Harrisburg, PA
http://www.ptgmarc.org

CLASS I: NEW INNOVATION: THE VARIABLE LEVERAGE PIANO ACTION

The Variable Leverage Piano Action is a new innovation for grand or
upright pianos, invented by David Stanwood. Simple modifications to the
balance rail bearings and the addition of a rail under the front of the
keys make it possible to change the balance point of 88 keys
simultaneously by the operation of "Speed Levers" at either end of the
keyboard. A Ratio change of 1.0 may be achieved by moving the levers
forward or back thereby making the action dynamically light, medium, or
heavy in an instant. The class will show how it works and discuss the
possibilities for the future of piano playing and performance.

CLASS II: THE IMPORTANCE OF HAMMER WEIGHT AND RATIO

The effect of Hammer Weight on tone and touch is profound. Matching
hammer weight with action ratio is critical. This multi media class
will cover essential issues surrounding the use of light, medium, or
heavy weight hammers in combination with low, medium, or high action
Ratios. The class will interactively investigate the effects of
changing hammer weight by evaluating the touch and tone of a piano in
the classroom and then assessing the change cause by clipping 1 gram
weights onto each shank as well as shifting the action ratio, using a
variable leverage action.

July 15-19, 2009 at the Annual Institute of the Piano Technicians Guild
Grand Rapids, Michigan
http://ptg.org/conv/2009

CLASS I: THE IMPORTANCE OF HAMMER WEIGHT AND ACTION RATIO

: The effect of Hammer Weight on tone and touch is profound. Matching
hammer weight with action ratio is critical. This multi media class will
cover essential issues surrounding the use of light, medium, or heavy
weight hammers in combination with low, medium, or high action Ratios. The
class will interactively investigate the effects of changing hammer weight
by evaluating the touch and tone of a piano in the classroom and then
assessing the change cause by clipping 1 gram weights onto each shank as
well as shifting the action ratio, using a variable leverage action.

CLASS II: HANDS ON TOUCH WEIGHT METROLOGY

This casual walk in workshop offers technicians a chance to try out the
various methods of touch weight metrology with emphasis on measuring and
understanding up weight and down weight.



Recent past teachings:
May  17-18, 2007
for the Bund Deutscher Klavierbauer in Bad Blankenburg Germany.   for details go to http://www.bdk-piano.de

"Die Praktische Verwendung der Anschlagsgewichtsbalanzierung von Teilen der Mechanik (Component Touch Weight Balancing) in der Klavier- bzw. Fl�gelherstellung oder in der Werkstatt, und die Vorteile die sie f�r den Fabrik, der Werkstatt, und der Kunde mit sich bringt."

Wenn man von Vorneherein in der Fabrik oder in der Werkstatt mit einen digitalen Waage die Tastengewichte nach pr�zise Designspezificationen einstellt, verbessert man gleichzeitig die Gleichm�ssigkeit des Auswiegens von einerTaste zur N�chsten enorm. Dabei wird es den Musizierenden erlaubt,eine gr�ssere Kontrolle �ber Dynamik, Tonnuanzierung, und Ausdr�ckskraft beim Klavierspielen zu erlangen. Man kann das Ganze noch Verfeinern,indem man individuelle Hammergewichte und Tastenreibungen nach kalkulierten Specifikationen fein einstellt.  Wenn mann bei einen sp�teren Mechanikreparatur die Hammerk�pfe wechseln sollte, und sie nach dem auf den Tastenholz gestempelten genauen Hammergewicht anpasst, kann man einen Verschlechterung der �rsprunglichen specialangepassten Spielartqualit�t des Instrumentes bis weit in der Zuk�nft vermeiden.

Seminarvorbereitung: Der Artikel: "Component TouchWeight Balancing - Blueprint for the Future" - von David C. Stanwood, PianoTechnicians Journal, April 2000, lesen und studieren.  Auch zu finden unter: http://www.stanwoodpiano.com/Blueprint_for_the_Future.pdf


June 20 - 24, 2007  PTG National Institute in Kansas City, Missouri  for details go to http://www.ptg.org/conv/2007

Class Title and Description:

"Practical Applications of Component Touch Weight Balancing in the Piano Factory 
and its benefits for the Factory, the Pianist, and the Piano Technician."

by David C. Stanwood PTG VvPN
1 hour presentation with 1/2 hour discussion

Setting key weights with a digital scale to precise design specifications, once-and-for-all in the factory speeds up the manufacturing process while greatly improving the consistency of key weighting from note to note thereby allowing for more subtle control of volume, nuance, and expression in piano playing.  Further refinement is achieved by fine tuning individual hammer weights and key frictions to specification.  Fitting replacement hammer weights to a specified weight stamped on the side of each key prevents degradation of a pianos designed playing quality far into the future.

Class Preparation - read and study the article "Component TouchWeight Balancing - Blueprint for the Future" - by David C. Stanwood, Piano Technicians Journal, April 2000  Available at: http://www.stanwoodpiano.com/Blueprint_for_the_Future.pdf