This site will look much better in a browser that supports web standards, but it is accessible to any browser or Internet device.


Clubs, glossaries, museums, shops and much more......

glue-it.com

...all of your model making needs from one site.







Model Engineering Glossary


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z



Sal Ammoniac

Chemical name: Ammonium chloride

Chemical formula: NH4Cl

See also: Chemical Table.


Sanding

Use a sanding block wherever possible. If you are sanding something like and aeroplane wing then use a long sanding block and stick the paper to the block with an impact adhesive. A sanding block will keep everything straight and will extend the life of the sand paper.


Sanding Disc

This is a machine that just should not be used without sufficient dust extraction and a dust mask. The reason for this is they create a huge amount of fine wood dust. Sanding discs are very controllable in use, but you must confidently hold the part you are working on and keep it located on the table.


Saturated Steam

Steam at the same temperature as the boiling point of water at that particular pressure is said to be saturated.

Scale

The debate as to what is scale and what is not will go on and on. We have generated a list of different scales.more...

Shareware that has a number of features to allow you to calculate sizes given a scale Quickscale.net


Screws

See also: Threads.

Series Motor

  • Easy starting
  • Powerful starting torque
  • Speed depends on load
  • May run away if left to run free

See also: Electric Motors.

Servo

A unit in a radio control system that turns electronic signals into mechanical actuation. more...



Sheet Metal

The traditional way of defining the thickness of sheet metal has been the Birmingham Sheet Metal Gauge.


Shunt Motor

  • Easy starting
  • Speed reasonably independent of load
  • Easy to regulate

See also: Electric Motors.


Silicon

After carbon silicon is the most abundant element on earth. Silicon is obtained by reducing sand (silica: SiO2), with carbon.


Silver bromide

Chemical formula: AgBr

See also: Chemical Table.


Silver Bronze

64.46 % Copper 12.41 % Zinc 1.14 % Aluminium 4.77 % Silicon 17.19 % Manganese


Silver Nitrate

Chemical formula: AgNO3

See also: Chemical Table.


Silver Steel

The word "silver" in the name comes from the appearance of this high carbon steel manufactured to BS 1407.


Slaked Lime

Chemical name: Calcium hydroxide

Chemical formula: Ca(OH)2

See also: Chemical Table.


Slot Drill

A milling cutter that can be used to plunge into the material and then moved to cut a slot. more...


Soda Ash

Chemical name: Hydrated sodium carbonate

Chemical formula: Na2CO3 10H2O

See also: Chemical Table.


Sodium

Sodium is a soft, silvery coloured metal which, like other members of the alkali group of metals, is extremely reactive. more......


Solenoid Engine / Solenoid Motor

An electric motor that uses a linear solenoid as the driving force. Can be configured like a steam engine or IC engine with the solenoid replacing the cylinder and piston of these engines. more......


Soot

Chemical name: Amorphous carbon

Chemical formula: C

See also: Chemical Table.


Sorels Alloy

10 % Copper 80 % Zinc 10 % Iron


Specific Heat Capacity

The amount of heat required to raise unit mass of a substance by one degree.


Specific Volume

The volume occupied by a unit mass of a substance. This is the reciprocal of density and the units as such would be m3/kg.


Sphere

sphere

See also: Conversion of Units.


Spirits of Salts

An old name for Hydrochloric acid.


Stainless Steel

A range of stainless steels are available that have varying degrees of resistance to corrosion, containing between 8 and 25% Chromium. Other elements used in Stainless Steel are Nickel and Niobium.

Stannic Oxide

Trade name: Tinstone

Chemical formula: SnO2

See also: Chemical Table.


Stannous Chloride

Chemical formula: SnCl2 2H2O

See also: Chemical Table.


Staybrite

8 % Nickel 74 % Iron 18 % Chromium


Steam Engine

A heat engine that performs mechanical work using steam as its working fluid. The photo shows the Lamp Post Engine.


Steam Engine Design

Some ideas for an approach to steam engine design.


Steam Engine Kits

There are a number of stationary steam engine kits available more...


Steam Engine Performance

Steam engines are relatively easy to design in the most simplistic form, getting the most out of the engine is not so easy more...


Steam Engine Valve Gear

Over the years many different valve systems have been designed to improve engine performance. more...



Steel

An alloy of iron and carbon. Mild steel contains less than 0.15% Carbon and hard steel more than 0.3% Carbon. more......

See also: Colour Temperatures, Currie Point, Oil Hardening Steel.

Steel Piston and Phosphor Bronze Cylinder

This combination took quite a lot of time to hone, but this was partly due to the fact that the cylinder and head are one piece.

After a few hours of running time this now runs as sweet as sweet

I must note that I have only ever run this on compressed air and not on steam and so not sure how well this combination will work at higher temperatures.

See: Pistons and Liners for more information...



Sterling Silver

Silver with 7.5% copper.


Stirling Engine

An external combustion engine. Also known as a Hot Air Engine. The Stirling engine was invented in 1816 by a Scotch clergyman, Robert Stirling, as a competing technology to the steam engine. Stirling engines work by subsequently heating and cooling a gas inside a closed volume. As the gas is heated it expands and as it is cooled it contracts. This expansion and contraction works forces a working piston which in turn drives a crankshaft. A Stirling cycle has two pistons: one that drives the crankshaft known as the power piston and one that moves the gas between the hot and cold ends of a cylinder known as the displacer piston.

See also: Fizgig - Stirling Engine, Low Temperature Stirling Engine (Gallery).


Stuart Models

Arguably one of the most famous model steam engine manufacturers.


Sulphuric Acid

Chemical formula: H2SO4

See also: Chemical Table.


Super Dural

4 % Copper 93.75 % Aluminium 1.25 % Silicon 0.5 % Manganese 0.5 % Magnesium


Super Glue

More correctly known as cyanoacrylate.

Superheated Steam

Steam taken directly from a boiler retains the same temperature and pressure as when it was produced and is said to be "saturated". By taking such steam and heating it further, a much greater volume of gas can be produced for a small amount of extra heat. Tests have shown that superheating can result in a 25% economy in coal and 30% in water. Introduced in the 1900's and used mainly on the larger main-line engines. Superheated steam will always be dry.

See also: Steam Engine Performance


S.W.G. British Imperial Wire Gauge

This is a numbering system for wire diameter. more......

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z