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<=>  <=>  <=>  <=>  E-BENCH  <=>  <=>  <=>  <=>

   The E-Mail Newsletter for Bench Jewelers

 

September 2003
Volume 4 Issue 9         circulation over 2,500

 

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  <=>  <=>    ABOUT THIS NEWSLETTER    <=>  <=> 

 

E-BENCH is a FREE monthly newsletter for Retail

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<=>  <=>  <=>  TABLE OF CONTENTS  <=>  <=>  <=>

 

REVERE’S TIPS FOR JEWELERS   

Tips for Jewelers,

Who Do Repairs from Alan Revere

 

FEATURE ARTICLE

Learn how to make your shop more profitable, a

new technique, or brush up on basic skills.

 

STEWART'S BENCH TIPS

Bench Tips from

Stewart’s International School for Jewelers

 

AT THE PLATINUM BENCH

Tips for working on Platinum from

Platinum Guild International  

 

FAVORITE TIPS

Tips and Tricks to make your work on the bench

a little easier and more productive from

Bradney W. Simon CMBJ and E-BENCH Readers.

 

GERRY’S GEMZ

Stone setting tips from Gemz Diamond Setting

 

WORKSHOP SAFETY FOR JEWELERS

Tips from Charles Lewton-Brian

 

 

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        Bench Jewelers Conference & Expo

 

      Coming April 23 - 25 2004 to Chicago IL

 

                 Exciting New
  Educational Conference and Supplier’s Expo

Workshops – Seminars - Demonstrations –

Networking Opportunities - Exhibitor Show 

 

All activities during this three day event will

be directed toward the Bench Jeweler,
        Making This The One Show In 2004
          That You Don’t Want To Miss

Bench Jewelers Conference & Expo presented by

Bench Media publisher of E-BENCH, BENCH

Magazine, and BENCH ROM

 

For More Information log onto: 

www.BWSimon.com/Conference

 

 

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<=>  <=>  REVERE’S TIPS FOR JEWELERS  <=>  <=>

 

Tips for Jewelers Who Do Repairs

from Alan Revere

Revere Academy of Jewelry Arts

 http://www.revereacademy.com/ 

 

FINDING THE CENTER OF A CIRCLE

By Alan Revere


They make fancy and expensive gizmos for

finding the center of circles, but chances are

you already have all you need for that task

sitting on your bench. Grab your dividers and

place one point on the circle.  Then adjust the

opening to what you guess is about the distance

to the center.  Now scribe a very light arc

onto the metal, with one point fixed on the

circle.  Move the fixed point about 1/3 around

the circle and repeat.  Then swing the last arc

from a point about 2/3 around the circle from

the first point, so that you now have three

arcs coming close to the center.  They overlap

closely, miss each other closely or meet in the

middle. No matter what the outcome, it is now

very easy to find the center of these arcs,

which is the center of the circle.

 

 

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  <=>  <=>  QUOTE WORTH RE-QUOTING  <=>  <=> 

 

A lot of frustrated artist are people who

didn't take the opportunity when it was

presented.

Jimmy Buffett

 

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<=>  <=>  <=>   FEATURE ARTICLE   <=>  <=>  <=>

Soldering

By Bradney W. Simon

 

Soldering is one of the most basic operations

performed by a bench jeweler.  Developing other

skills is of little value without the ability

to solder with confidence.  The only way to

attain a level of proficiency is by gaining

correct instruction and continually practicing

proper techniques.  With this in mind, the

following tips are given for the apprentice to

learn correctly, and the advanced or master

jeweler to review and brush-up on existing

skills.

 

Always apply solder to one side of the joint,

and then pull the solder through the joint by

heating from the other side.  If you apply

solder all around the joint a weak joint may

result from the solder only flowing at the

surface and not completely through the joint. 

This is referred to as a “cold solder joint”. 

It is particularly important to watch for this

when soldering thicker prices of metal

together, such as heavy men’s ring shanks.

 

Turn your bench light off while soldering.  It

will be easier to see the metal turn dull red

and judge the temperature of the metal.

 

Make certain the soldering area has been

properly vented.  Soldering produces toxic

fumes, and ALL SOLDER STATIONS SHOULD BE

VENTED. 

 

Always make certain you have a tight fit before

soldering.  Although solder can fill a gap,

that is not what it is made for.  Filling a gap

in a poorly made joint will result in a weak

solder joint.  In addition, solder may “pull”

out of the joint when polishing, leaving a line

where the joint is, or pits may show up in the

joint.  When practical hold the jewelry up to a

light and see if you can see any light coming

through the joint before you solder.  If you

can see any light, cut through the joint with

your saw.  By cutting precisely through the

joint the saw blade will trim any high spots

from the sides of the joint.

 

There are three forces that pull solder when it

is in a liquid state.  The greatest of these is

heat.  When solder melts, it flows most readily

to the hottest area.  The next force is

capillary action.  Solder when melted to a

liquid state will readily flow through a tight

fitting seam.  The third force, which has the

least effect, is gravity.  Solder will flow

down through a seam easier than up through a

seam.  Always have a tight fitting seam, and

when possible place the solder on the tip of

the seam and pull the solder down through the

joint by applying heat to the underside of the

joint.  Then you will have all three forces

working for you.

 

Always heat the metal to be soldered, not the

solder itself.  Allow the heat from the metal

to flow to the solder to melt it.

 

Always match the solder to the color and karat

of the metal you are soldering.  Do not use low

karat “repair” solder or solders of lower karat

then the metal as the solder may tarnish,

causing the jewelry to look dark around the

solder joint.  This is particularly important

when attaching crowns to rings.  If low karat

solder is used the ring may turn un-slightly

dark around the base of the crown.  The only

remedy to this problem is to remove the crown

and clean away the old solder.  Then solder a

new crown to the ring using the correct solder

and reset the stone.

 

Never quench white gold.  Always allow it to

cool to the point that you can pick it up with

your fingers before soaking.

 

Always anneal metal that is work hardened

before soldering.  This will prevent the metal

from shifting when heated.

 

When annealing white gold, use a bushy flame

and heat the gold to a red color.  Then, hold

the metal at this temperature for several

minutes by playing the flame across the metal. 

Heating the metal for too short of a time will

not completely anneal the metal.  Refiners

anneal white gold in ovens and hold the metal

at annealing temperatures for a half hour.  

Always allow the gold to air cool slowly. 

NEVER quench white gold, as this will cause it

to become brittle.

 

When soldering gold and platinum together,

anneal both parts thoroughly before soldering. 

These metals expand at different rates when

heated.  If not thoroughly annealed stress

tears may develop as the metal cools.  In

addition, allow the metal to cool slowly after

soldering.  Do not quench the hot metals as

rapid cooling increases the stress in the

metals.

 

When making multiple solder joints in a piece

of jewelry do not pickle between soldering. 

The chemicals in the pickle are absorbed into

the metal causing problems in the solder flow

in subsequent joints.  If you must pickle the

jewelry, thoroughly clean the jewelry in the

ultra-sonic before soldering the remaining

joints.

 

If the solder does not flow properly, it is

generally because you do not have a tight fit

or the joint is dirty.  Allow the jewelry to

cool and clean in the ultra-sonic.  Then cut

through the joint with your saw.  This will

clean out the seam as well as fitting the metal

together better.  Then re-coat the jewelry with

boric acid and alcohol and retry soldering.  Do

not be tempted to force the solder to flow by

smearing it over the seam with a solder pick

(nudging the solder into place is acceptable). 

Smearing the solder across a seam will result

in a weak solder joint.  The solder will only

flow over the surface and the dirt prohibiting

proper solder flow will be forced down into the

joint.  In addition, do not be tempted to force

the solder flow by overheating.  This will only

result in pitting the solder and melting the

jewelry.

 

Always coat the jewelry with boric acid by

dipping it in a solution of boric acid and

alcohol and burning off the alcohol.  When

heated the boric acid will turn glassy, forming

a barrier keeping the metal from oxidation. 

Boric acid also acts as a flux.  Often this is

all the flux you will need in order to solder;

however, occasionally additional flux will need

to be added.

 

If enough flux is not used, the metal will

oxidize and the solder will not be able to flow

properly; however, you can also use too much

flux.  If too much flux is used the glassy

coating of the flux will hold the solder away

from the metal not allowing it to flow into the

seam.  If this is a problem, use your solder

pick to scrape away excess flux and then

continue your soldering. 

 

Do not try to move metal when heated to

temperatures at which the solder will flow. 

This may cause the metal to crack.  Instead,

allow the metal to cool, then re-align and

complete the soldering.

 

When soldering a butt joint on thin metal it is

better to cut the joint on a bevel.  This will

give you more surface area to solder and will

make a stronger joint.

 

When soldering several small pieces together

place the parts half way into soft wax.  Then,

pour casting investment over the parts.  When

the investment hardens remove the wax and

solder.  The investment will withstand the

temperatures of soldering and hold the small

parts in place.

 

To keep solder from flowing to certain parts,

paint them with liquid paper before soldering. 

It is inexpensive, and with a brush in the cap,

it is easy to use.  The small bottle liquid

paper comes in makes it convenient to store on

your bench and there is no mixing required. 

When finished soldering, it cleans up easily in

the ultrasonic cleaner.  Most importantly, it

works well at stopping the flow of solder. 

While it is toxic, it is no more toxic than the

solder you are melting.  Soldering produces

toxic fumes, and ALL SOLDER STATIONS SHOULD BE

VENTED. 

 

Another method to keep solder from flowing is

to not coat those areas with boric acid or any

other flux.  The oxidation on the metal from

the heat of the torch will keep the solder from

flowing to those areas.

 

When soldering a jump ring to a flat piece of

metal, file a flat side on the jump ring across

its seam.  This will provide sufficient surface

area to create a proper solder joint.

 

When soldering wire to a sheet (such as

soldering a post onto an earring) coat both

pieces with boric acid and alcohol.  Then, melt

a small piece of solder onto the end of the

wire.  Next, hold the wire with locking

tweezers above the sheet to keep it warm as you

heat the sheet to soldering temperatures. 

Then, lower the wire into position as you play

the torch over the joint until the solder

flows.  This method will help keep you from

over heating and melting the wire.

 

Using a yellow highlight marker, color the

label on yellow gold paste solders.  Then,

while working it will be easy to distinguish

between the tubes of yellow and white paste

solder.

 

When soldering on a hollow object, always drill

a small hole in the object.  This will allow

air to escape as the piece is heated and the

air expands, and to re-enter it as it cools and

contracts.

 

Make certain the surfaces you are soldering

together are smooth, even, free of burs, and

fit tightly together.  This will insure a

strong bond, resulting in a neat joint

requiring less finishing work, and a higher

quality look.

 

Do not point your torch directly on fine chains

or other thin metal, as they melt easily. 

Instead, place the chain, wire, or other metal

on a ceramic pad.  Then direct the torch on the

pad next to the metal and let the reflected

heat melt the solder.

 

When soldering items of different thickness,

always direct more heat to the heaviest item. 

Ideally, both pieces should reach the

temperature to flow the solder at the same

time.  Do not be fooled by items that look

massive, but are in reality quite thin. 

Directing too much heat on them may cause

improper solder flow.  In addition, you may

actually melt a hole through the object.

 

Once the solder has flowed, remove the heat. 

Continual heating will only cause overheating

resulting in pits in the solder and possibly

melting the jewelry.

 

Do not use too much solder.  Roll sheets of

solder through a rolling mill making the sheets

thinner before cutting into pallions.  Then it

will be easier to cut into usable pallions and

they will be easier to see and to place into

position than the tiny pieces it is necessary

to cut from the thicker sheets.

 

 

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  <=>  <=>  QUOTE WORTH RE-QUOTING  <=>  <=> 

 

Nothing is particularly hard if you divide it

into small jobs.

Henry Ford

 

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             SIMON SEZ SEMINARS  

 

Bradney W. Simon is a JA Certified Master Bench

Jeweler with over 26 years experience on the

bench.  He is the Editor and Publisher of

E-BENCH, BENCH Magazine, and BENCH ROM, and is

an accomplished platform speaker, providing

Keynote Speeches, and Educational Seminars.  

 

Topics include:

     Shop Management

     Bench Tips

     Jewelry Demonstrations

 

For information on having him speak for your

organization, log onto;

 http://www.BWSimon.com/SimonSez Seminars

 

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  <=>  <=>   STEWART'S BENCH TIPS   <=>  <=> 

 

Bench Tips from Stewart’s International School

for Jewelers

http://www.stewartsintlschool.com/

 

KEEPING A BUR FROM FORMING WHILE SAWING

By Jim Stewart

 

To prevent a bur from developing on the piece

of ring sizing stock from sawing, change to a

sawblade that has more teeth per inch (TPI). 

Example: a 2/0 sawblade has 62 TPI; a 3/0

sawblade has 66 TPI.  Lubricate the back of the

sawblade with bees wax and lighten up on your

touch; let the sawblade do the work. 

 

 

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  <=>  <=>  QUOTE WORTH RE-QUOTING  <=>  <=> 

 

Plans fail for lack of counsel, but with many

advisers they succeed.

Proverbs 15: 22

 

 

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          Books from MJSA/AJM Press:
    At the Bench and The Platinum Bench

          Simplify your bench work! 
The two award-winning books of MJSA/AJM Press,

The Platinum Bench by Jurgen J. Maerz and At

the Bench by Gregg Todd and Greg Gilman,

feature a wealth of time-saving tips, and

illustrated, easy-to-follow instructions on the

repair and fabrication of gold, silver, and

platinum jewelry.  Based on the popular At the

Bench section in AJM, both books feature

hundreds of photographs on everything from

simplified pave setting to easy 18k inlay in

platinum. 

 

To download sample chapters, go to

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For more information, call 1-800-444-6572, ext.

3038.

 

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  <=>  <=>    AT THE PLATINUM BENCH   <=>  <=>

 

Tips for working on Platinum from

Jurgen J. Maerz CMBJ,

Director of Technical Education

for Platinum Guild International

http://www.pgi-platinum-tech.com

 

FTC GUIDE FOR MARKING PLATINUM JEWELRY

 

The FTC Platinum Guide for marking jewelry made

wholly or in part of platinum provides that

items consisting of 950 parts or more per

thousand of pure platinum can be marked

"Platinum" without the use of any qualifying

statements; 850 to 950 parts per thousand can

be marked in accordance with international

standards of "950 Plat." or "950 Pt.," "900

Plat." or "900 Pt.," "850 Plat." or "850 Pt."

(The revised guide permits the use of a two or

four letter abbreviation for platinum.) Copies

of the Platinum Guide Federal Register notice

and the entire Jewelry Guides are available

from the FTC's web site at http://www.ftc.gov

and also from the FTC's Public reference

Branch, Room 130, 6th Street and Pennsylvania

Avenue, N.W. Washington D.C. 20580; (202) 326-

2222

 

 

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  <=>  <=>  QUOTE WORTH RE-QUOTING  <=>  <=> 

 

Nothing ever comes to one, that is worth

having, except as a result of hard work.

Booker T. Washington

 

 

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       Jewelry Dealers World Trade Network

      http://www.JewelryDealersNetwork.com

 

  <=>  Bench Jeweler Discussion Channel  <=>  >

 

Ask questions, share tips, and take part in the

on going discussions, or just read and take in

all the advice from many Excellent Jewelers

from around the world.

 

Membership includes: Topical Discussion

Channels, including

Bench Work, CAD-CAM, Stone Setting, and many

more.  You may buy, sell and trade on the

Buy/Sell Channels, Plus Much More.

 

 

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  <=>  <=>  <=>   FAVORITE TIPS   <=>  <=>  <=> 

 

To smooth the channel walls on small channel

settings, make a roller from an old millgrain

wheel.  Carefully grind away the metal ridges

that form the beads, leaving a smooth channel

around the outside of the wheel.  Then polish

to a high shine.  Place this modified wheel in

its handle and roll it over the top of the

channel wall in the same manner you would use

to millgrain an edge.  The result is a smooth

edge of metal burnished tight against the

stones.  This modified millgrain wheel works

equally well on bezel set stones.

 

 

             < < < < < <> > > > > > 

 

When channel setting always undercut the same

side of the channel on each stone.  Alternating

the undercut side may cause the stones to set

unevenly when finished.  Before cutting the

seats mark one of the walls of the channel with

a felt tip maker. Then you will be certain to

always undercut the same side of the channel. 

This is particularly important if you are

interrupted while cutting the seats.

 

 

             < < < < < <> > > > > > 

 

Before beginning to set any stone remove all

tools from your lap tray.  Even a diamond can

be chipped it if hits a hard steel tool when

dropped.

 

 

             < < < < < <> > > > > > 

 

Before repairing a chain, look over the chain

to ascertain how the links are assembled.  In

order to re-assemble the chain where it is

broken you must know how the links were

originally assembled. 

 

 

             < < < < < <> > > > > > 

 

To repair a coin pendant with a stripped screw,

clean the threads from the pendant with a

Krause bur then fit a wire in the hole and

rivet it closed.

Do not solder the wire in but rivet the ends

down.  The tubes are soldered to the frame and

will move or come off easily if you try to

solder the wire in place.  In addition, if the

customer ever wants to change the coin you can

drill the rivet out and replace it.

 

 

             < < < < < <> > > > > > 

 

To separate rings soldered together, saw them

apart with a fine (6/0) saw blade.  Do not heat

them and try to pull them apart.  The shank may

come apart if sized, especially if sized up

with one piece through the two rings.

 

 

             < < < < < <> > > > > > 

 

If you have a tip you would like to share with

our readers send it in an e-mail to

mailto:Brad@BWSimon.com

 

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  <=>  <=>  QUOTE WORTH RE-QUOTING  <=>  <=> 

 

If I were a school teacher, I would put lazy

pupils to studying bees and ants.  They would

soon learn to be diligent.

Thomas Edison

 

 

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<=>  <=>  <=>   E-BENCH SPONSOR   <=>  <=>  <=>

 

                  BENCH ROM

  The Multi-Media Magazine for Bench Jewelers

 

BENCH ROM is an affordable alternative to

learning new skills and developing your career. 

            Discover New Techniques

     Learn New Tips to Improve Your Work

See New Products and Technologies Demonstrated

All right from your home or shop without having

to travel to a seminar or trade show.

 

“Bench Rom is great,” says jeweler Bill Scores

“It’s like being in the shop of a Master

Jeweler and watching over his shoulder.”

 

Log onto www.BWSimon.com/BenchRom for more

information or to subscribe

 

 

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  <=>  <=>  <=>   GERRY’S GEMZ   <=>  <=>  <=>

 

Stone setting tips from Gemz Diamond Setting

http://www.gemzdiamondsetting.com/index.html

by Gerald N. Lewy

 

Flush Set Stones

 

To flush set stones, first secure the ring

solidly into your ring clamp.  Then use a round

bur 80% the size of the stone and cut the hole

to this size.  The remaining 20% is the metal

for securing the diamond.  Next, use an under-

cutting bur and proceed to make a seat for the

girdle of the stone, remembering that the

diamond must be flush with the surrounding

metal once the stone is set.  Under cut a seat

all around the hole, check with a 10x loupe

making sure that the seat is at the same level. 

Do not over drill into the wall; you must only

insert the drill until you cannot see the

rotating teeth any more.  Once you are

satisfied that the procedure is accomplished

and to your expectations, ‘snap’ in the stone. 

Do not snap it straight in; it isn’t going to

work this way.  Place the stone on an angle and

slide it in side to side.  You will notice now

that the diamond appears to be lower than the

surrounding metal, but don’t worry.

 

Now proceed to use your brass pusher, push over

the metal into 4 equal sections around the

stone.  You should not compress the metal, but

only push to tighten the stone.  Once the gold

is sitting evenly on the stone use a pumice

wheel to clean up all of the marks left by the

push rod.  Do not use a tapered pumice wheel

but only a flat edged wheel.  Now for the final

stage of clean-up, use a #39 flat graver and

bright-cut around the inner wall of the bezel

until you achieve a nice uniform cut.

 

 

     ((((((((((((((((((()))))))))))))))))))

 

  <=>  <=>  QUOTE WORTH RE-QUOTING  <=>  <=> 

 

Successful is the person who has lived well,

laughed often and loved much, who has gained

the respect of children, who leaves the world

better than they found it, who has never lacked

appreciation for the earth's beauty, who never

fails to look for the best in others or give

the best of themselves.

Anonymous

 

 

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             The Ganoksin Project

               www.ganoksin.com

 

The Gem and Jewelry Pre-Eminent Online

Resources.  Open to the public

 

               Free of Charge.

 

A substantial library of articles,

publications, reports, and technical data on

gem and jewelry related topics; as well as a

sizable collection of art and jewelry

galleries, for both the casual visitor and the

professional, also host the popular Orchid

online forums for jewelers.

 

 

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 <=> <=>  WORKSHOP SAFETY FOR JEWELERS  <=> <=>

 

Workshop Safety Tips From Charles Lewton-Brian

 

LIGHTING

 

How you light your shop, illuminate your

working area, experience the reflection from

surfaces and the paint you choose for the walls

all have an effect on your ability to work in

your studio.  Poor lighting can strain the

eyes, contribute to accidents, and make working

uncomfortable. 

 

Use lots of good lighting around such as

nice diffuse lighting overhead and local lights

(like desk lamps) in other places where you

need light.  In our teaching studio we have

desk lamps mounted on the wall every six feet

or so, as well as over fixed tools like vises,

drill press etc.  On my own bench I have two,

one on each side, so that I can position good

localized light anywhere on the bench surface

and can also light an object on my bench pin

from two sides at once, thus eliminating

shadows.  I like daylight spectrum fluorescents

overhead.  You should use diffuse light

generally in the workshop as glare and

reflections are less likely.  It also tends to

reduce sharp shadows from objects and surfaces

being worked which can cause mistakes and other

problems.  Diffuse light, please note, can

still be quite bright.

 

There has been a lot of research into

appropriate lighting levels for different

tasks.  In general, the lighting levels

required for fine bench work, measuring and the

other activities that are standard for the

jewelry shop are about twice as high as for

other fields such as woodworking, fibers, other

crafts, or tasks such as working in a chemical

laboratory.  Some general tips include: keep

the light sources themselves out of your field

of vision, use matte rather than shiny surfaces

for bench tops, tools etc., and have a contrast

ratio of 10:3:1 for a given job.

 

What this ratio means is that you have ten

units of light for the task, 3 units for the

local area and 1 unit of light for the

background lighting.  To rephrase that, the

strongest lighting should be right on the spot

where you are actually touching and looking

closely at your object (this light level should

be ten times brighter than the light in the

background of the room).  The lighting on the

workbench, the local area where you are

working, should be about three times brighter

than the background lighting in the room.  This

means that the background lighting is dim

compared to the light on the work surface and

particularly with the lighting on the actual

object you are working on.  This forces the

eyes to continually shift their receptivity to

light as one glances into darker areas from the

glare of the actual working spot and back

again.  I have heard from Professor Eickhorst

(a lighting expert I respect) that this helps

the eyes to avoid fatigue.  It helps if the

strong lighting on the work area is diffuse,

such as from a daylight spectrum fluorescent

lamp.  These are available at all strengths and

price ranges.

 

For more information on Workshop safety from

Charles Lewton-Brian log onto:

http://www.ganoksin.com/borisat/safety.htm

 

 

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