Nichrome Hot Wire Cutter Calculator

Power source and hot wire.

Nichrome hot wire cutter calculator.

There are two readily available types of wire nichrome a nichrome c. I chose nichrome wire as the example to show how nichrome wire temperature can be calculated using a sp. This is the first video in my new wire design series. If a bow for foam requires about 1 5 watts per inch of cutting wire and you can supply about for conservative sake about 75 of your rated supply in watts.

Nichrome wire has high tensile strength and a high melting point. The tension factor. So if we multiply our 3 43 ω by 10 then we should get the resistance we need per metre. My power supply is a 12 volt supply rated at 2 amps will it be adequate for a hot wire cutter calculation.

Each affects the others. Nichrome c contains 60 nickel 16 chromium 24 iron. The nichrome cutting wire reaches the temperature of a few hundred celcius degrees in few seconds. There are four variables involved in determining what you need.

A 12 piece of 14 gauge nichrome wire requires only 1 9 volts but almost 12 amps. Easy hot wire cutter guide ac adapter guitar string or nichrome. Nichrome hot wire calculator use this online nichrome hot wire calculator to calculate the total resistance resistance per feet the power required the current required and volts of a nichrome wire with ease. Use this online nichrome wire calculator to calculate resistance power current and voltage of the nichrome coil by just providing the length thickness and temperature of the nicr.

Voltage gage length and temperature. So lets say we want our hot wire length to be 100mm long which is 0 1 of a metre and we know the total resistance needs to be 3 43 ω. All metals expand with heat so the nichrome wire at cutting temperature also expands and gets longer. Set three calculate the fourth.

This instructable is different than previous ones because it uses hot wire cutter design charts to ensure the perfect finish. Nichrome a contains 80 nickel and 20 chromium. Larger diameter wires are also used for very long cutters such as 8 or 10 feet. Nichrome is wound in coils to a certain electrical resistance and current is passed through it to produce heat.

My design is simple no tables no springs no dials just the raw guts. Nichrome wire is the optimal wire choice for foam cutters for a variety of reasons but particularly because it is resistant against corrosion and oxidation at very high temperature. 75 x 12v x 2a 18 watts 18 watts 1 5 watts per inch 12 inches. On our nichrome wire page we have added the resistance ohms per metre next to each wire.