Model Engineering Glossary

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Lance Wood

An elastic wood suitable where some degree of bending is required.

See also: Timber.

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Larch

An extremely durable wood used for rough work. It warps a lot when dried, but can be polished to a fine finish when dry.

See also: Timber.

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Lathes

Lathes are used for many engineering operations: boring, facing, screwcutting...

Some basic hints, tips and other links for further information are available from here. more......

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Lathe Tools

The cutting and clearance angles of a lathe tool will be dependent on the type of material they are to be used on and the required quality of finish. more......

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Laughing Gas

Chemical name: Nitrous oxide

Chemical formula: N₂O

See also: Chemical Table.

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Lead Bronze

80 % Copper 10 % Lead 10 % Tin

Lead Carbonate

Trade name: White lead

Chemical formula: 2PbCO₃Pb(OH)₂

See also: Chemical Table.

Lead Sulphide

Chemical formula: PbS

See also: Chemical Table.

Length

See also: Conversion of Units.

Letter Drills

This system of numbering drills is no longer used, but may be of use in deciphering old drawings. more......

See also: Number Drills.

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Limestone

Chemical name: Calcium carbonate

Chemical formula: CaCO₃

See also: Calcium, Chemical Table.

Linotype Metal

85 % Lead 2 % Tin 13 % Antimony

Live Centre

A centre that revolves with the work, for example the ball bearing type tailstock centre.

See also: Centres.

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