Tuesday, May 5, 2009

WWB in MDF. Ver 1.1

For the last 2 weekend i have been working on this warm box. This is the extension of the prototype i experimented on the thermostat + dimmer.

The box is a bit oversize but it is firm and steady. Well there are 2 opening with doors, smaller one for throwing in hard cold wax, while the bigger opening is for taking out warm soft wax. However a bit of miscalculation make the smaller box too narrow to serve its purpose. The control panel is located at the right hand side of the box, with hinges so the control panel can be folded.



Lifting the upper cover reveal the wiring of the 4 bulbs. No big deal, just pararrel wiring, live to live, nuetral to nuetral. Took me a few shops to find this huge wire cap. Wire guy warned me to be careful with nuetral wire, "it is not the live wire that killed people, it is the nuetral". Finally met a shopkeeper who care about his customer's life.



What is beneath the wire is this board, cover with aluminium sheet, and 4 40W bulbs were fixed with set screw, on the board thru the aluminum sheet. There is a bit of risk present, just incase the wire snap and the end touch the aluminium sheet. I will get a big spade bit to drill the aluminium sheet and MDF so there is no way the wire is going to touch the aluminum part in what so ever situation.



Inner wall of the warm box is construct out of aluminum sheet, which, leave a gap between the inner wall and the MDF wall. Air is good insulator. I paint the inner wall about 50% opacity of black spray paint, with hope that the glare wouldn't be so bright, well, bad move, black make the aluminium sheet very less reflective, and absorb the heat form bulb like a lack hole. It tool 30 minutes to warm up just a little bit of wax. Wasting time, and energy. So I lay the aluminium foil around. And problem solve. 5 minutes is what it take to (almost) thoroughly warm the wax. A ceramic tiles is used as the base.



Twist the thermostat knob to 40°C and the dimmer to its minimum, here is what i get.



The door of the warm box is open side way, so i can pick up the wax easily. I can install a 1/4 circle tray on the door, if I want the wax to be "presented" to me without my hand going into the warm box each time. In such scenario, the wax available to me in a 1/4 circle tray, everytime i open the door. However, that would be version 1.2, if it ever come true :-). I would put that into K.I.V, since, now it is pretty easy for me to reach the warmed wax without touching the hot bulbs in the warm box.





Warm, warmer, hot. Well the third one is not that bright, it is just my old camera that couldn't tell the truth :-)



And a bit of progress on the sculpt. Still struggling on the learning curve.



Last but not least : Build and Copy and Modify on your own risk!
* MDF are produly sponsored and transported by my brother :-)

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