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ACID-FREE |
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Once a term used for high quality framing materials, it has
become debased and now often needs qualifying to be useful as
a framing term. See CONSERVATION
and MOUNTBOARD
sections. |
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ACRYLIC |
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Usually known by its brand names Perspex and Plexiglas this
is a high quality clear plastic used for glazing frames. Useful
for its lighter weight and much higher resistance to breakage.
See also Styrene |
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FILLET |
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A piece of wood or card etc. that fits behind the glass in
the rebate to create a gap between glass and mountboard or artwork.
Usually the same width as the rebate. |
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FLOAT |
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Where the artwork is laid onto the surface of a board without
any part of it concealed. |
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LANDSCAPE FORMAT |
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Where the vertical dimensions of the frame are smaller than
the horizontal ones. |
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MAT |
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Another name for a Window Mount |
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MICRON |
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One thousandth of a millimetre. Mountboard thickness is now
measured in microns; 1500microns is average (i.e. 1.5mm) |
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MOULDING |
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The name for the pieces of wood, metal or plastic that make
up the perimeter of the frame whether it is ornate or plain. |
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MOUNT |
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Can mean either the material around an artwork or the process
of attaching it. See; Window Mount, Drymount, Blockmount, Float |
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PASSE PARTOUT |
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A tricky little term that means different things to different
people.
1] another name for a window mount
2] mountboard
3] an old method of framing that involves using a fabric tape
around the edges of the glass and boards to hold them together
instead of a moulding. |
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PERSPEX |
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See Acrylic |
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pH |
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A term to describe the acidity or alkalinity of a substance.
See CONSERVATION section |
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PLASTICISER |
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Something incorporated into a material to make it more flexible
or malleable. Some plasticisers can be volatile and their loss
can cause longterm brittleness in the material. Some may harm
artworks. |
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PLEXIGLAS |
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See Acrylic |
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PORTRAIT FORMAT |
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Where the vertical dimensions of the frame are larger than
the horizontal ones. |
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REBATE |
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The part of the moulding that holds the glass and boards.
It usually overlaps them by about 6 to 10mm. |
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REBATE SIZE |
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is usually considered as the same as the size of the glass
and boards fitting a frame. It is bigger than Sight Size by
twice the width of the rebate. |
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SIGHT SIZE |
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is the measurement of the distance between the two opposite
inner edges of the moulding in a frame. See also rebate size,
external size |
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SLIP |
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Fits into the rebate like a fillet but protrudes inwards to
add an extra decorative element on the inner edge of the moulding. |
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STUDIO MOUNT |
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A landscape format window in a portrait format board, often
used by photographers. |
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STYRENE |
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A cheaper plastic than Acrylic. Used instead of it where budget
is a consideration. The drawbacks are a softer surface more
prone to scratching and greater brittleness that gives a risk
of cracking under impact. Not as colour stable as acrylic. |
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WINDOW MOUNT |
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A card border which usually overlays the edge of the artwork.
Serves a decorative function and also a structural one in keeping
the artwork away from the glass. |
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