Materials: colored crayons, wax
Production method:
1. Find an abandoned canned beverage barrel (for example, 1.25 liter coke bottle), cut off the lid and cut the wax into the barrel.
2. Put the bucket in hot water, stir the wax inside and let it melt completely. It is best to use boiled water. But ask your parents for help, or do this step under their supervision.
3. Pour the molten liquid into a beautiful container (for example, put a heart-shaped chocolate box). Don't pour too much. As for the reason, look down. Of course, you have to put the thread as a candle core in the container first.
4. The original idea of wax cooling, A pours the melted colored crayons in according to the surface painting method (colored crayons come in handy at this time). In this way, different colors of wax are added layer by layer, and beautiful candles are made.
Magnetic pen holder
Do you find it strange that the ballpoint pen is unstable in front of the pen? Is this a magic show? The answer is no, this is actually caused by magnetic force.
First, the production method
1 and 6×3(mm) magnets, 1 old toothbrush handle, 1 plexiglass sheet and 502 glue.
Second, the production method
1, make a mullion. Find an old toothbrush and cut off the brush with a utility knife or a small saw. (Figure 1)
2. After sawing off a section with a hole at the tail of the toothbrush handle, smooth the cross section, heat it with a blower (or on a gas stove) at a distance of 25(mm) from the head according to Figure 2, so that the toothbrush handle softens and bends to a right angle, and then fix the small magnet with 502 glue at the designated position on the curved surface.
3. Cut a piece of 40×50(mm) plexiglass and polish the edge to make the pen holder base.
4. Fix the completed mullion (as shown in Figure 3) on the designated part of the bottom plate with 502 glue. Shallow drill a 2(mm) concave hole on the top of the mullion at the corresponding point of the bottom plate along the vertical line of the magnet.
5. Stick a magnet on the top of the ballpoint pen with 502 glue. The polarity of the magnet bonding surfaces of the bracket and the pen should be the same.
6. Put the ballpoint pen vertically so that the nib is inserted into the concave hole of the bottom plate, and the ballpoint pen will stand unsteadily on the pen holder.
What do you think this is? In fact, the principle is very simple, because the magnetic blocks of the pen head have the same polarity and the same sex repel each other, so the ballpoint pen is "nailed" to the bottom plate.