25 / 06 / 2016 | Videos

Jet propane torch for metal melting foundry



This time, our structure is a burner, which will be used in our upcoming video. The particular burner will indicate the temperature that currently exists inside the oven the one that we are going to make in order to be able to melt aluminum and other minerals. Our burner combines the air and the propane to create their proper combination aiming to achieve the perfect combustion. 

To make this burner, we used compounds and metallic pieces of tubes that we use for plumbing. Also, we made two entrances, from which the air is inserted to the one and the propane is inserted to the other while both are met and end up in a tube where if they get flamed they will get burnt. Regulating the air and the propane, we get the ‘perfect’ combustion. At the entrance, where the air is inserted, we used a regulator that controls the flow of the air that we want to provide. While the flow of the propane is controlled by a valve that we placed. 

Additionally, we placed a watch on the flask of propane to get the ideal flow of propane by it. Therefore, lighting up the burner from the front and regulating the mixture of air and propane, we get a very powerful and impressive flame, which can warm the oven that we are making, giving us the best possible outcome!















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16 / 06 / 2016 | Videos

Belt Grinder


After all the requests that we received from our subscribers inquiring to watch how a belt grinder is made, we decided to make one. Therefore, our new structure with the number 0038 is a fact. 

Firstly, we got an oval-shaped flange of 5mm thickness and this is how we made the base of our machine. Then, we designed and cut the shape of the belt grinder from a metallic plate of 5mm thickness and we welded it vertically on the oval base. 

Choosing a very powerful motor of 2hp and 3000rpm, we adjusted it on our base in 90 degrees with the frame of the belt grinder. On the axis of the motor, we placed an aluminum wheel that we made it on the Lathe having 8cm diameter and it is used to revolve the belt from the sandpaper. We also made three smaller wheels on the lathe that are revolved freely and the belt of 72’’ length revolves by the use of the motor on them. These three, free wheels were made by aluminum and their diameter is 5cm. The two wheels were placed motionless on the frame of our structure so that our belt would revolve and move vertically according to the base of our machine. The third of the wheels was placed on a moveable lever which is moved up and down to regulate the stretching of the belt and to help in its change when it is needed. However, the use of the third wheel is not only limited in keeping the belt stretched but also in regulating its move on the right and on the left so that when a screw is revolved, we will be able to choose how left or right our belt will be declined in order to ensure that the belt will be moved at the center of our wheels and not going out of the sidelines of the wheels’ frame. 

Then, we created a base, in which are placed the objects that will be rubbed in order to ensure our stability and security while using it. Also, a base at the side of our machine, gives us the opportunity to use various components depending on the work or the outcome that we aim to achieve. The belt used, has 72’’ length and 2’’ width. To sum up, the belt grinder is a very useful machine as you can use it to sharpen, remove a material from iron or wood, give different shapes and even polish objects depending on the grit of the sandpaper that you use. This machine is great and can be activated by the simple touch of a switch that is located on its base!




















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06 / 06 / 2016 | Videos

How I peel a Watermelon



This week’s structure aims to please and relax our channel’s subscribers that reached the unbelievable number of 100000.  

Therefore, we have made a machine that is capable of peeling off the watermelon and it is presented in a funny way. Although, the particular machine is not substantially useful, the procedure of making it was a small challenge for us. 

Firstly, we made a metallic frame of galvanize, square tubes 60mm x 30mm x 2mm. Additionally, acrylic of 1cm thickness was placed on the frame so the basis of our mechanism was ready. Then, having the support of lathe, we made cases out of Teflon plastic for the bearings that were used in our structure. Later, we turned a threaded rod that when it turns, it leads the knife that cuts the watermelon to keep a constant speed of motion. 

Two pulleys made by aluminum and a belt connect the knife’s axis with the rotary basis, where the watermelon is placed. Therefore, when a dc motor is connected on the knife’s axis, the axis is moving as well as the basis of our structure. Moreover, the basis where the watermelon is put as well as the cutting knife were made of stainless steel.

Most importantly, we placed a component on our structure that is located on the top surface so when the watermelon is put for cutting, this component keeps it still so it won’t move during its rotation. For this reason, we have chosen a dc motor that would enable us to control the rotations of our watermelon in order to be able to choose the ideal ones. 

Thus, providing our motor with electricity, the watermelon is rotating while the knife is moving vertically on its side and peeling it off. 

Despite that our main aim for the creation of this structure was to make our viewers laugh, the whole procedure of making it was really interesting, very functional and it involved a lot of food, too. 












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