Marquetry With a Knife

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  • 8/17/2019 Marquetry With a Knife

    1/5

    Workshop on Cutting Marquetry

    with a Knife

    (18.10.2009)

    Introduction

    Knife uttings more

    commonly sed hansawingor marquetryn

    Australia nd he

    United

    Kingdom,

    ecauset requires o special

    quipmentndcanbe doneon

    a

    kitchen

    able.

    Otheradvantages re hat here s no noiseor dustproducedn the cutting utstage.Safety

    is stillan mportant

    onsideration,

    owever,

    ecause f

    hesharpnessf he knife

    blades.

    The

    hinveneers

    approximately

    .6mm) vailablen

    Australia

    rewell-suited

    o this

    approach. s in

    sawnmarquetry,n

    aim

    s

    o

    produce

    ork

    withno

    gaps

    betweenhe

    oints.

    It may requiremanyhours

    of

    practice

    o achieve desiredevel

    of skill.Thesenotes

    cover

    somebasic

    oints

    nly.

    The eferences

    isted t he

    endaresomeof he many ources

    f

    further nformation

    n all aspects f marquetry.

    Veneers

    Black Bog

    or

    en

    oak,macassar

    bony.

    Brown Walnut,

    eak,blackbean,ak,silkyoak,elm,

    blackwood.

    Tan

    Purple

    Red

    Pink

    White

    Yellow

    Burrs

    Weatheredycamore,ight

    oak, eak,opepe.

    Kevasingo,

    urpleheart,

    ndian osewood.

    Padauk,

    esternedcedar,makore,mahogany,

    apele,

    arrah,

    Queensland

    aple.

    Canadian irch,

    ear,

    acewood,

    aboon,

    ird's-eye aple, herry,

    lm,aspen

    Horse hestnut, hite

    ycamore,oto, sh,willow,poplar.

    lroko,

    ntiaris, vodire, atinwood,beche.

    Gambola, lm,walnut,

    reen

    yprus,

    mboyna.

    SpecialeffectsTamo

    sh,zebrano,igured

    ak,oliveoak,rosewood,ird's yemaple.

    Harewood

    Veneers

    yed

    with

    sulphate f

    ron,

    n shades f silver, late,

    ark

    grey,etc.

    Dyed eneers arious niform right olours reavailable.

    Above ist

    adapted

    ram

    Turner

    1990:

    7).

    SelectingVeneers

    Whilea scroll awcan

    cut

    hardveneers

    withease, heyare difficult

    o cut

    with

    a

    knife.

    Even

    whencutting gainst

    steel uler he knife an end o want o ollow he

    grain

    ather

    han

    the

    ruler.Repeated

    hallow utsare usually ecessaryor bothhardandsoftveneers.

    Choosing oftveneerss

    one

    way

    o minimizehe difficulties f cuttingmarquetry ith

    a

    knife.Examples

    f soft o medium eneers

    reavodire, eech, enge, irch, utternut,

    cherry, arewood,olly, uon

    pine,

    oto,mahogany,

    ear,peroba, oplar, oplar

    url,

    sapele, assafras,ycamore, alnut seeHobbs ndFitchett 980: 1).A small electionf

    easy-to-cuteneersmay

    be sufficient

    or

    many

    projects.

    Flattening

    Veneer

    lf the veneer s

    buckled nd

    will

    not stay lat,

    spraya

    fine mist

    of

    methylated

    firits

    on both

    sides, hen

    press

    carefully/gradually)

    etween oards nd

    paper

    owels.Rdpeat f

    the

    distortions

    n the veneer

    are

    very

    pronounced.

    ReinforcingVeneer

    Attach

    paper

    ape

    o the op

    (finished

    ide)of the veneer o

    prevent

    plitting nd breakage,

    especiallylonghegrain. hiscanbe used or argepieces f backgroundeneer swell

    as or smallernserts. incoln

    1980:

    4) ecommends

    singSellotapen small

    pieces.

  • 8/17/2019 Marquetry With a Knife

    2/5

    Blades

    Choices f knives nclude round-handled

    raftknife,a carver's nife

    or a Swan

    Morton

    knife.

    Mostcuttings donewith

    a

    fine

    pointed

    lade, uch

    as a

    number

    1

    SwanMorton

    soalpel lade. number 1 Xacto

    blade s similar. nother

    ypeof

    blade

    with

    a curved

    dge

    is alsousefulor scrapingapeandglue rom hework.Blades anbe embeddednpieces

    of

    polystyrene

    r

    corkbetween ses.

    Sharpening lades

    This

    section s rom

    he

    website

    f The Marquetry

    ociety

    UK):

    http: /www.m

    arquetrv..

    rq/the

    m

    arquetry kn fe.htm

    Of all heskills equiredn

    marquetry ithout

    oubt,he mainone s

    heabilityo cut

    accurately.his

    skilldepends n maintaining

    sharp

    point

    n heknife. he

    point

    f he

    blade s

    he

    part

    of heknifewhich s used

    o cut,not he ong

    edgeof heblade. o maintain

    this

    point

    he blade s sharpenedn a finecarborundumtone r oilstone, sshown elow:

    Ser{er

    fn*rtv

    sfHtrJatunw

    Ft*rts'

    sifr,of

    frhde

    O{tstmrl

    The

    backof he

    blade

    s

    appliedo thestone

    nd

    ubbedn

    a straightine o remove

    ny

    burrs

    r

    hooks

    n he ip.

    This

    will

    progressively

    ove he

    cuttingip down he blade.

    NEVER

    ry o sharpen

    he beveled utting dge,

    ou

    will

    notbe able o compete

    ith he

    manufacturer

    ork

    evenly ver he surface f

    your

    carborundum

    tone

    and ry

    not

    o weara

    groove

    n t.A cheaper

    lternatives to usemedium

    lothbacked arborundum

    heet

    lued

    to a

    piece

    f wood.

    ives

    1995:

    -7) ecommends

    sing 0

    grit

    ollowed

    y

    180

    or 200grit

    emery

    aper.l

    In

    order o make

    a

    finer

    cutandallow he blade

    o be removed

    asily

    rom

    he

    wood,

    he

    shoulder

    etweenhe cutting

    dgeand hebackof he

    blade

    s

    also

    ground

    own

    giving

    morestreamlined ffect.

    Scroll aw ndMarquetry

    pecialnterest

    roup ACTWoodcraft

    Guild

  • 8/17/2019 Marquetry With a Knife

    3/5

    Applying

    he Design

    Many

    people

    rawa design n racing

    aper

    nd

    ransferhedesign

    with

    4H

    or similar

    pencil,

    r a metal tylus)o the backof heveneer

    sing lack arbon

    aper

    r

    greygraphite

    paper

    from

    art shops). lternatively,

    designon white

    paper

    can

    be

    glued

    glue

    stick) o the

    theveneer.f the design son the back t will need o be drawn n reverse. aperpatterns

    attached itha

    glue

    stick

    glue

    on he

    paper

    only,not he veneer)

    may

    peel

    off airlyeasily.

    CuttingTwo

    Piecesat Once

    1. For

    simple esigns here

    only wo

    veneers

    reneeded, uch

    as

    or

    a backgammon

    board,

    a

    knife

    can cut he wo veneers

    t the same ime.Thiswill

    produce

    wo inished

    pieces,

    nea

    'negative'

    of the other.The sunburst nd

    cat designsor hisworkshop

    re

    suitableor his

    method.

    2. The wo veneers

    houldbe aped ogetherirst,withSellotape

    r

    masking

    apearound

    the

    edges.

    The

    cutting

    roceeds

    y making epeated,

    verlappinghallow uts.Avoid

    making

    eavy utsas his makes t harder

    o

    follow

    he

    pattern

    ine.

    3. For arge

    pieces,

    t may

    be

    preferable

    o cut only

    part

    way

    hrough he second eneer

    before eparatinghe

    wo

    ayers

    to avoidcutting livers rom he

    second

    iece

    f

    the

    angleof the cut changes. he

    second

    iece

    s thencompletedollowing

    he

    partially

    ut

    line.Thewindowmethod

    see

    below).alsoses

    a shallow.knifeut o

    mark

    outa

    piece

    o

    be nsertedn a'window'.

    4. When

    he cutting

    s

    completed, ssemblehe

    pieces,

    ecurewith

    apeon he ront,and

    rub PVA

    glue

    nto

    he

    oints

    rom he

    back.

    Turn

    over,

    make

    sureall

    pieces pushed

    downso that he back s leveland, f necessary,

    ress

    betweenweighted oardswith

    wax

    paper

    on eachsideof the marquetry.

    5. When

    he

    glue

    dries, he marquetry ill be ready or

    gluing

    o a backing oard, uchas

    9mmor 12mmmdf

    or

    plywood.

    Remove

    ll Sellotape r masking

    apebefore

    luing

    on

    to a board it can be very

    difficulto

    remove

    fter

    pressing.

    The Marquetry

    Society's

    UK)

    Advice

    on

    Knife Gutting

    Sou ce http //www. arquetrv.

    rg/themarq etrv knife. tm

    We

    always uggesthat

    you

    start

    by

    cutting

    simple]

    hapes.Carefully heck

    your

    est

    pieces

    or any major aults n order o correct our echniqueor yourprojectwork.

    1.

    lf the

    pieces

    are a

    very oose

    it withsignificant

    aps

    all

    round,

    heck hat

    you

    kept he

    knife n close

    contact

    with

    he emplate uringmarking

    nd hen

    ollow

    hatsameknife

    mark

    duringhesubsequentutting

    ut .

    2. lf the

    edgesof the cut are chamfered

    sloping)

    heckhow

    you

    hold

    he

    knife.

    Many

    people

    old heknifeas heywould

    a

    pen,

    n

    a sloping

    osition.

    oumust earn

    o

    roll

    the wristover o keep

    he

    knife

    bladesquare o the work o

    produce

    square ut.

    3.

    lf

    you

    are cutting mall

    pieces,

    r apered nds, einforcinghe veneer irstwith

    paper

    tapewillhelp.Although

    he

    woodmay

    stillbreak p, he apewillhold

    he

    veneer

    together careful andling ill keep

    t togethef ntil t can be itted

    and

    glued

    nto

    inal

    Scroll aw ndMarquetry

    pecial

    nterest

    roup ACTWoodcraft

    Guild

  • 8/17/2019 Marquetry With a Knife

    4/5

    position.

    o not emovehe reinforcing

    apeuntilthe

    lue

    hasdried

    15

    minutes)

    r t will

    allfallapart

    4.

    lf

    you

    are indingt hard

    o see

    where

    ou

    have

    raced he

    ine

    hroughhewindow,

    coatof paperapemakes hecuttinginemuchmore isible.

    5. lf the woodappearso split

    easily,

    make

    sure hat

    you

    do

    not

    use oo much

    pressure

    n

    the

    knife o

    try o

    cut

    oo

    quickly.

    hissevers hewoodalong

    he

    ibres nstead

    f cutting

    through hem. t is

    better o useseveral ontrolled trokeswith

    ower

    pressure

    n

    he

    blade.

    The Window

    Method

    . Themost

    commonechnique

    or

    making

    marquetry

    s hewindowmethod.t is

    suited

    or

    bothsimple ndcomplex esigns.

    s

    lves

    1995:

    ) describest,

    "

    ...

    this

    means

    tarting

    witha wastesheetof veneeror cardboard

    nd

    cutting

    he

    shapeof

    one

    piece

    rom

    his.A

    piece f heselected ood splaced nder he opening r"window"ndcut round sing he

    edge

    of he

    window s

    a

    guide.

    Each

    andevery

    iece

    s

    cutand itted n hisway."

    Thewindow

    method, onewell, an

    produce

    oints

    without

    aps.

    t

    alsoenableshe maker

    to

    choose he

    most

    suitable rientation nd

    positioning

    f the

    grain

    or figure n

    the

    veneer,

    y

    viewing

    t

    throughhewindow

    Robin

    Cromer illbe

    discussins

    hewindowmethod,

    A

    website n

    the

    windowmethods: http:l/www.woodezine.comi03_2005/0305_marquetry.html

    Examplesof Marquetry

    Thereare manyexamples

    f

    marquetry

    n he web.

    A

    good

    starting

    oint

    s:

    http://www.marquetry.orglheMarquetry

    ociety's

    UK)

    home

    page:

    lickon'allgalleries'

    at the

    eft

    of the

    page

    or

    pictures

    f

    marquetry

    ork.

    Sourcesof MarquetryDesigns

    Simple lipartdesignsmay

    provide

    deas or nitialtest

    ieces

    nd

    projects.

    References

    Hobbs,

    Harry

    J and Fitchett, llanE.

    (editors)

    980.ModernMarquetry andbook. hames

    andHudson.

    lves,Ernie1995.

    Marquetry

    or

    Beginners,pswich: he Marquetry

    ociety

    4tn

    dition).

    Lincoln,WilliamA. 1992.TheMarquetryManual,

    Hereford: tobbartDavies td.

    *Middleton,

    David

    and

    Townsend,

    lan 1993.Marquetry echniques,ondon:Batsford

    Turner,Roy 1997.TheMagicWorld

    of

    Marquetry,

    elbourne: he

    Marquetry ociety f

    Victoria.

    *ln

    the Guild's

    ibrary.

    Don

    Rowland.

    ctober 009

    Scroll aw ndMarquetry pecialnterest

    roup

    ACTWoodcraft

    Guild

  • 8/17/2019 Marquetry With a Knife

    5/5

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    DonRowland.October 009