Tutorial Forno

How to make a bulb oven to warm your clay.

First cut the 4 sides of the box as you want.

This oven will and up with the approximate measurements of 35 cm in front and 30 cm deep by 20 cm high, mark with a pen points every inch on the sides of the 3 plates 1/2 inch from the edge and make small holes with a drill in the marks you just made, using a bit thinner than the nail you want to use.

With strips of wood 1 inch X 1 inch, cut two pieces and joining the nail 3 sides of the box, preaching the holes you made earlier, it is worth spending a little white glue on the wood before nailing to have a strongest.

Repeat the process by making the box as the image.

Then check the box measures and cut the bottom and top, stick them up as it did with the sides, do not forget to put another strip of wood to support the hinges.

Here's how the box mounted inside looking out.

Place two hinges upon the opening to the oven door, lock the door and put a handle to open.

See how the oven was mounted looking inside.

Mark the locations where the sockets of the 3 lamps and drill the holes corresponding to the screws, secure the socket on the outside of the box with screws and nuts, that's right outside! This is to make the electrical conections, it is much easier to do this outside of the box.

After doing this, loosen the screws and tighten again the sockets inside the box.

Do the rest of the wiring and put a DIMMER to control the intensity of the lamps and thus control the heat in your oven.

Okay, your oven is ready to be used, avoid placing the clay straight into the oven, put it into some container, so it will be easier to take it off oven, since it will be hot.

Remember you do not need to cook the clay, just warm IT and make it soft to block and then work with your tools, do some testing with a oven thermometer, the ideal temperature is around 115ºF, but this will depend on the hardness of the clay you are using.


Try also changing the intensity of the bulbs (40W, 60W, 100W), when you find the ideal temperature at which the clay is soft like you want, mark with a pen in Dimmer, so it will get easier next time.


The ideal to soften the clay is a constant temperature all the time and not peak heat or cold from time to time.

We do not RECOMEND THE use OF conventional oven or microwave to heat the clay.

WARNING: NEVER LEAVE HOME AND LET THE OVEN ON, AND DO NOT LET THE OVEN ON LONG WITHOUT CHECKING THE TEMPERATURE, THIS COULD CAUSE A FIRE!