Don't want to buy a 200 dollar heating base?
Build one for pennies! (free if you go dumpster diving)
Step 1: Materials and Tools
- Toaster oven (cylindrical, rod-like, non bent, heating elements)
- Sheet metal (I used old brass door kick protectors)
- Outlet plug (old extension cord or whatever)
- Light dimmer
- Wiring nuts (or soldering gun)
- Liquid electrical tape (optional)
- metal pipes (optional)
- Garden Shears (or anything that cuts sheet metal)
- Dremel or drill
Step 2: Dismantling the Toaster Oven
Step 3: Building the Base/heat Strip and Wiring.
- Drill holes on the tabs to thread the heating element through.
- Wire one lead of the power cable to one lead of the dimmer switch, and the other lead of the dimmer switch to one lead of the heating element.
- Wire the other lead of the power cable to the other lead of the heating element.
- (Since the heating elements work on A/C current, you can disregard rectifying the current, and you can disregard which lead of the power cable goes to which lead of the dimmer or heating element.)
- Mount metal pipes (with nuts and bolts or cut tabs on the sheet metal and bend them in towards the pipe) parallel to the heating element, with an about 1 inch gap from the element.
- Apply liquid electrical tape to seal any exposed wires (don't want to be electrocuted. I used tape)
Step 4: Using the Heat Strip
- Turn on heating strip, adjust the dimmer for the right temperature (I usually turn it on all the way, then reduce the heat.)
- Hold the sheet of plastic hovering about half an inch over the heating strip. The edge of your intended bend should be parallel to the heat strip.
- Once the plastic starts drooping just the teeniest bit (you may also try and bend the plastic a bit to judge when it's good enough to start bending), move it away from the heating strip and bend. You may use a jig for definite angle bends. (I use square wooden dowels for right angles. I pin one against the bending edge and slide the other dowel under the soft plastic to fold and keep it at a right angle.)
With the metal pipes:
- Same as before, but you do not have to hold the plastic sheet while the plastic is softening, just leave it resting on the metal pipes.