# Melting plastic with radiant heat? [closed]

I want to melt a bed of plastic powder so that the powder bed once melted then cooled form a solid sheet of plastic.

In order to melt the powder I thinking of passing a nichrome (Ni80/Cr20) wire over the bed without the wire touching the bed. With the direction of motion of the wire perpendicular to the length of the wire.

The heat from the wire should radiate from the wire and pass into the plastic powder in order to melt the powder is this possible? Is it possible to to melt plastic powders through heat radiation from a nichrome wire.

Conditions:

• I can use a wire of any diameter. Single wire or multiple wire in parallel.

• Melting temperature of plastic used is 270-300°C.

• Any distance between the wire and the powder bed is possible. Close distance between the wire and powder is preferred.

• This sounds like an engineering question rather than a physics one. After all, we can use a wire of radius one kilometre heated to 1000 C at some finite distance (in vacuum, on a friction-less plane) to do it... but you are actually interested in something that can work practically. That involves trade-offs like cost, safety, reliability etc. this SE does not do. Commented Apr 5, 2020 at 12:05
• I believe to heat something to 300 C with radiative heat alone would require such high wire temperature that the NiCr would quickly oxidise to beyond useful.
– Gert
Commented Apr 5, 2020 at 12:12
• It's one of these things that 'on paper' looks promising but in reality will be very difficult to make work.
– Gert
Commented Apr 5, 2020 at 12:22
• @Gert. Multiple wires can work wonders, and the OP is willing to consider this. Commented Apr 5, 2020 at 17:06