What interesting technological small productions can table tennis be made?

Make a globe.

First, take a ping-pong ball and draw the necessary meridians and latitudes, such as the north and south latitudes of the equator, the poles, the prime meridian and the 180 meridians, etc. After drawing the ball of the globe, you have to make a hole in the poles of the poles, there is no hole on the earth, but the globe is fixed on the bracket, and it still needs to be used. In this way, the ball of the globe is considered to be ready.

Next, let's make the globe bracket. The easiest way to do this is to use iron wire and fold it into the shape of a globe holder. Then thread the ball in and adjust the appearance of the bracket, so that a simple globe is ready.

2.Table tennis catapult.

Step 1: Prepare the materials. 1 drink bottle, 2 rubber bands, 1 rope, 1 pull ring, scotch tape, scissors.

Step 2: Cut off the excess part of the bottle, leaving only two bones.

Step 3: Drill a small hole in the cap.

Step 4: Use a colored pen to mark the cut out part of the bottle in the shape of a cross.

Step 5: Use scissors to cut a small hole in the mark.

Step 6: Take a rubber band and put it on the two small openings opposite each other. Then take another rubber band and put it on the other two small openings. In this way, the rubber bands are crossed in a cross shape. It is better to fix it with scotch tape again.

Step 7: Pass the string through the cap and tie a knot at the intersection of the bands. Tie a pull tab on the other end. It took a lot of effort for me to tie it, but I learned a new skill.

The table tennis catapult is ready.

。。。Make a little globe, or get a little bit more tied together to make a drifting boat.

You can do a kind of silk scarf magic.

Ping-pong crossbow table tennis pistol.

Table tennis helicopter.

Take a ping pong ball, draw it with a knife, and prepare to pour the plaster in.

The plaster is about 1 3 in the lower part of the table tennis ball, and you can achieve the effect of the tumbler to draw the draft with a pencil first, which is very important to ensure that it will not be crooked or deformed.

Paint the large shape, that is, the base color, don't get the line first, the line is used for trimming and pressing the bottom at the end.

It's starting to go live, black line.

6. Complete the tumbler pull.

1. Tumblers can be made;

2. Cut half of the table tennis ball, paste a heavy object on the bottom of the inside, and wrap the upper half with the image you like.

1.Raw materials ->2Extrusion ->3

Grinding slip ->4Softening ->5First Forming ->6

Dry ->7Cutting ->8Determination of thickness ->9

Bonding ->10Hot air drying ->11Determination of weight ->12

First polishing ->13Dry ->14Second Forming ->15

Second polish 16Inspection, Identification ->17Seals, productions.

Extrusion & Grinding - Cutting celluloid raw materials weighing more than 100kg into celluloid flakes with a thickness of 100 kg. These celluloid flakes are then placed in a press and extruded into round sheets. The surface of these round sheets needs to be sanded smooth.

Softening - Soak pre-cut discs of celluloid (nitriol ivory) in a solution containing 70% water and 30% alcohol. The purpose of this process is to soften the celluloid discs so that the subsequent process can be carried out.

First Forming - Put the softened celluloid disc in hot water, stuff a hemispherical object with a radius similar to a standard table tennis ball from below, and make the celluloid disc into a semi-circular ball. This step is very important, the quality of a ball often depends on the quality of this part of the technology, it can determine 70% of the quality of a table tennis ball.

Drying & Cutting - After the first forming, these semi-circular balls are soaked in an alcohol solution. Then, they are taken out and allowed to dry for 2 days, and then the excess edges of the semi-spherical shape are cut off by hand. After this processing, a semi-spherical sample as shown in the image above is completed.

Determination of thickness - a complete table tennis ball is made up of two semicircular balls. In order to combine semi-spheres of the same thickness, it is necessary to perform a series of measurements to distinguish them.

Bonding - After the thickness has been determined, the two matching semi-spheres are combined. A solvent is applied to the seam and bonded as it is fused to form a spherical shape.

Hot Air Drying - After gluing the two matching semi-balls, hot air drying is carried out for about a week. After that, the weight is determined and differentiated by 1 100 g as the standard.

After the first grinding, it is naturally dried for 30 to 40 days before entering the second molding stage. In order to correct the difference in the seams and determine the size of the ball, the molding process is carried out while heating it.

Because sometimes there is a slight deviation in the position of the interface between the semi-spheres, or the thickness of the celluloid is uneven, a final inspection is required.

Put the combined balls on the tilting table in the picture above and let them roll for a rolling test, the ones that can roll in a straight line are marked as three stars, and the rest are used as practice balls. The selected balls will be officially released with a logo.

Tumbler, minus half a ping pong ball, stick a weight on the bottom of the inside, and wrap the upper half with your favorite image!!

Wrap the ping-pong ball with a square handkerchief, and then tie it with a thread, and the ping-pong ball becomes the head, which can be hung up after drawing an expression. There is this thing in every episode of "Clever Ikyu", you can watch it.

Happy to you!

I remember seeing a "table tennis climbing waterfall" before, and I didn't know if it would work.

1. Take a ping-pong ball (air leakage can also be used, but it can't be cracked), and prick a small hole with a pin.

2. Use a pin to plug one end of the thread of the sewing clothes into the small hole, and then seal the small hole with 502 glue (the table tennis ball can be lifted with the thread).

3. Open the valve of the tap water, pinch one end of the line, and let the table tennis ball close to the water flow (the table tennis ball will automatically enter the water flow).

4. After the table tennis ball enters the water flow, lift the line upwards along the 45 to 60 degree angle, and you will find that the table tennis ball is swimming against the current in the waterfall!

Bernoulli's principle in mechanics is used (when flowing at constant height, the flow velocity is large, and the pressure is small. ）