Cutting 12 Styrofoam Panels: Choosing Resistance Wire for 1m Length, 15cm Thickness & Transformer

Question

Hello
I have 12 styrofoam panels to cut through. Cutting length of one plate - 1m, board thickness - 15cm. I made a table, I have a transformer, I have to choose the right wire, but I have no idea in this area - I am an absolute layman when it comes to calculations. The pictures depict the type of transformer you own. I am asking for hints.
By the way: some ideas when it comes to the way the wire is fixed.

Thank you from the mountains

rafcio_21 · Accepted Answer

As for thickness, the thicker the more electricity it takes but works at a lower voltage, it warms up better, I use from 0.6 mm to 0.8 mm I have a transformer (36V) and on the primary winding dimmer for the possibility of temperature regulation. The length of the wire must also be taken into account. For fixing, it uses ceramic cubes and a tensioning spring.

tc · Accepted Answer

The welding wire from the migomat works well, I fed it with an ordinary transformer. The old power was regulated by a dimmer on the primary side. The power supply you have is not likely to be suitable for this task

rafcio_21 · Accepted Answer

On the Allegro you will find different types of Kanthal D resistance wire around 0.70 PLN per meter.

rafcio_21 · Accepted Answer

You have to test which will work better for you, I think that 0.6 should be good, maybe 0.7 I use this only in the episode, about 1.30 m and power 36 V with the possibility of down regulation. Thinner is not worth it because he stays short and he is very delicate. It is best to use the dimmer from the lighting on the primary winding and the bigger then you can adjust the temperature that suits you, because as the whole time he warms to the max with the wire is red it burns quickly.

kandyaqq · Answer

In general, I mean that someone who knows how to do this has calculated how thick the wire should be. The length of this wire will be approx. 20-25cm.

kandyaqq · Answer

Really no one will tell you what a thick wire on this transformer, and will this system work?

kandyaqq · Answer

Today I put on a 0.7mm wire. After 5 seconds he burst. Thank you for the hint of sxiviter. I have somewhere, I will try to apply. For me, the wire is about 30cm.

rafcio_21 · Answer

You have to use some spring because in the moment of heating the wire stretches greatly in your case, it is best to use it at the top so that the wire passes through the strips later, the spring and the ankle

kandyaqq · Answer

I have one founded. I think that it can be too strong. I'll put on this sxiviter, I'll see what it will give. Thank you for your interest and hint

rafcio_21 · Answer

It is not only the fault that you have a very short section of wire and a larger current flows because there is less resistance and it is better to have with a reserve of power, at least for a long time you will not be able to sleep. And the dimmer will definitely help I also combine
With different thicknesses until I applied the dimmer now no matter what wire thickness I apply I have the ability to adjust.

kandyaqq · Answer

So in summary, use a longer, approx. 1m section of wire and dimmer ?

rafcio_21 · Answer

First, use the dimmer itself

kandyaqq · Answer

I bought several thicknesses of the resistance wire - from 0.5 to 0.8 mm and the trial and error method, i.e. shortening the wire (each time about 2 cm), determined the appropriate cutting temperature. 0.6mm wire. Thank you all for the hints.

Cutting 12 Styrofoam Panels: Choosing Resistance Wire for 1m Length, 15cm Thickness & Transformer

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