Handling and carrying
Gloves should always be worn when handling glass. These should not be too stiff, since it is important to be able to feel the glass to handle it safely. You can use folded newspapers or old pieces of inner tube as improvised ‘laps’ when carrying glass. Wrist bands are a further safety recommendation.
Always handle glass gently but firmly and never grip it tightly. To reduce dangers of breakage, carry glass vertically and not at the horizontal and never balanced on the head. When negotiating sharp corners or winding staircases, allow plenty of room for the glass behind you.
Small sheets of glass may be held under the arm, supported from beneath by the hand at the centre of balance. If the pane is too large to fit under the arm, hold the centre of the bottom edge with one hand and tilt the pane forward, holding the leading edge near the top corner with the other hand. Rest the upper portion of the sheet against the forearm and shoulder.
Large sheets should be carried by two people. The one in front should adopt the same position as a single person handling a large sheet. The one at the back should support the glass with one hand cupped around the lower corner holding the bottom edge, with the back edge against the shoulder. .The top edge should be held with the other hand. Where people are carrying glass care must be taken to walk in step at a slow pace, particularly at any change of level and when turning corners.
Glass can be carried up ladders-supported by a second person for larger sheets, but this practice should be avoided as it can be very dangerous in the event of a gust of wind or if one slips.
Smaller panes can be carried on the back seat of a car, but protect the upholstery with a blanket, lay the glass flat on the seat, and turn the blanket over the edges to prevent damage to the glass and to the car.
If you are carrying two or more panes, interleave these with newspaper. Glass carried in the boot should also be wrapped in a blanket, so that there is no direct contact with the car body.
Larger panes may be carried on a roof rack. First, lay a sheet of 19mmon the roof and cover this with a blanket, place the glass on the blanket and then fold it over the glass. The whole assembly should be lashed to the rack with a sash cord or a clothes line. Remember that sharp braking may throw the glass forward.
Tools for cutting glass A steel glass cutter is adequate for most work and cheaper than the traditional glass cutter’s diamond. If you can, choose a cutter on which the wheel is clearly visible when the tool is in use, as this promotes greater accuracy.
The back of a glass cutter has small notches cut out. These are not, as sometimes supposed, devices for notching off protrusions and edges but are gauges, so that you can gauge the thickness of glass correctly for the job in hand.
If you are doing any quantity of glass cutting, it is worth the trouble to make up or buy a T-square, to guide the cutter during its stroke. A1.22m length of 76mm x 6mm ramin or oak, preferably chamfered at one edge, with a 305mm length of 51mm x 13mm placed at right-angles across one end, is satisfactory.
A notch should be let into the cross arm, adjacent to the chamfered edge on the long arm, to allow the cutter to run cleanly off the edge of the glass at the end of its stroke.
A pair of pliers, for trimming narrow strips of glass and uneven edges, a ruler or steel tape for measuring and a felt-tipped pen, or Chinagraph crayon, are other tools. A small empty tin, filled with felt and soaked with light machine oil enables you to lubricate the cutter.
10. November 2011 by admin
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