Frame materials Flashcards
How are cellulose acetate, nitrate and acrylic made?
Routed
How are cellulose propionate, spx, opytyl, TR90, carbon nylon made?
Injection Moulded
How is shell made
Handmade
How is titanium and flexon made?
Laser soldered
How is stainless steel made?
welded
How is rolled gold made?
Gold layer bonded to a core metal base
How is plated metal and nickel silver made?
Soldered
How is aluminium made?
Riveting
What does the colour extruded mean?
solid colour, that is the sheets original colour
what does the colour dyed mean?
Part is transparent
What does the colour laminated mean?
Like cheese on toast, colour lays on top of eachother
what colour is shell?
it’s own natural shell (brown) colour
Which frames have a colour - electro plated
Stainless steel, plated metal, and nickel silver
Which frames have a colour of galvanised?
Titanium, flexon
How to tell what acetate is
Rigid, thick, hard and heavy
how to tell what Cellulose nitrate is
ILLEGAL, it will be a yellow plastic frame
how to tell what acrylic is
Upswept and supra, usually laminated
how to tell what cellulose proprionate
light plastic, flexible
how to tell the difference between acetate and proprionate
acetate is heavier and less flexible
how to tell what SPX is
will be marked spx
What are the 3 manufacturing facts to mention
Manufacture, joints and colour
how to tell what optyl is
there will be a ~sign or scratched off or only half metal sides inside plastic
how to tell what TR90 is
high transparency and no reinforcement in the side
how to tell what the difference between proprionate and TR90
tr90 has more flexible side as no reinforcement inside
how to tell what carbon nylon
Plastic front and metal side, sides are lacquered on to match colour of front
how to tell what shell
they have two silver joints and highly polished
how to tell what titanium
light weight and flexible
how to tell what stainless steel
metal blocks on bridge
how to tell what rolled gold frame looks like
there is a Karat (amount of gold) marking e.g.1/10 12K or 12m/m
how to tell plated metal
cheap and colour will wear off
how to tell what flexon
tubes on the bridge, flexible light weight and strong
how to tell what aluminium
cold and rigid
how to tell what nickel silver
dull silver
What adjustment facts can be mentioned
sides, temp of adjustment , what happens when adjust, write non-flammable for plastic
What plastic frames do not have fully reinforced sides
acrylic, Optyl, TR90, shell
what happens to acetate when heated
warps easy, non flammable 57
how to know, how a metal frame can be repaired
it is the same as manufacture
what happens to cellulose nitrate when heated
flammable! 65 is soft point, 70 is flash point
what happens to acrylic when heated
if over heat will blister, temp= 68
what happens to cellulose proprionate when heated
warps easily, temp = 67 and non flamm
How to adjust SPX
Cold glaze, shrinks if heated, softens at 95
Which frames are cold glaze adjusted
SPX, TR90 and carbon nylon
How is shell adjusted
in steam and it can be repolished
How is optyl adjusted
softens at80-120, heat until sloppy then hold till stiff
Which materials are corrosion resistant
Titanium, stainess steel, flexon,
How can most metal frames be adjusted
using 1/2 covered and pad pliers
What does general type state
Gender - style - material
what side option
Curl or drop end side
Bridge types
regular (no pads) , fixed pad (pads) , keyhole ,adjustable pads on arms
Joint types
pinned, heat inserted, screwed, injected
soldered, laser soldered, welded, riveted
Lens retention
Plastic: sprung in
metal: closing block joint
Supra: nylon cord fitting into supra groove
Rimless: drilled and plugged or screwed
Edge finish
Plastic and metal: bevel edge
Supra: Supra groove
rimless: flat edge
