06 / 01 / 2021 | Videos

Making a tire vulcanizing machine

In this video we are presenting the making of an electric machine, called ‘vulcanizer’. This machine is used to repair punctures, weld two tires and in other tasks.

This machine is useful to us for making tires that we can’t find in the market and they need to be custom-made. For example, we needed such a machine to make a tire for the monowheel.

The welding is done by exerting pressure and heat on the surfaces that we want to weld. To achieve the temperature we need, we made two aluminum dies and we put elements taken from coffee machines in them. Also, to set the right temperature we placed thermostats at 160°c.

Finally, for exerting pressure on the tires, we put an air piston of 63mm. On the machine, we could place a timer switch and adjustable thermostats for a better performance of our machine. Although the construction with the number 0114 is ready and we are going to see it work in the following videos, very soon!!!

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01 / 12 / 2020 | Videos

Making a split nut

In our job we daily meet various kinds of screw nuts like heavy hex, nylon insert lock, jam, wing, cap, square, prevailing torque lock, coupling, slotted and many other.

In this video, we are making a screw nut that is consisted of two parts for an English wheel restoration. This two-pieces nut is a part of a mechanism that we took into consideration to make our English wheel ergonomic and usable. The reason why is consisted by two parts is that both sides of the screw have bigger diameter than the point where the fold is so it is impossible to be placed as any other common nut.

Initially, we created the spots where the two pieces are connected. After we created these spots we cut the piece into two other pieces. Then, we screwed the two pieces together again and we modified them on the lathe till reaching their final form. On that piece, we made some space where  a lever can be placed to exert more power. At these two sides of this odd nut, we made sockets for two thrust bearings. The purpose of these bearings is to absorb the  rubbing from the vertical power exerted by the screw during the function of the machine.

Afterwards, we separated the nut into two parts and we put them in the oven that we made to harden and blueing in order to make the nut hard and resistant to oxidation. Later, we put the pieces to the English wheel and the outcome of it was amazing as the engine was working in excellence. Spinning the nut, the die of the English wheel below approaches the die above and vice versa. The mechanism is very fast and convenient and the restoration is excellent!

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01 / 11 / 2020 | Videos

Making a spindle sander

Spindle sanders are widely known machines, which are used for rubbing curvy pieces. The philosophy on how the rubbing is done is simple as cylinder sandpaper is being spinned by a motor while another motor is lifting up and down the sandpaper which smoothes the surface that comes in contact. 

In our case, we chose a motor taken by an old treadmill 240v dc and with power 2hp. It is a quite fast and strong motor having a good performance in using it. We also applied a collet er32 on our motor and we placed the components of various sizes for various sized sandpaper. As it was previously mentioned, while the motor is spinning the sandpaper a smaller motor is moving the other motor up and down. 

Achieving a smooth conduct of the movement, we used linear bearings 20mm id. The second motor that we chose is a wiper motor with two gears, a fast one and a slow one. In this way, we have the option to choose a faster or slower move for a better outcome. 

The table of our machine with the number 0112 was made by iron plate of 10mm thickness. By just using a simple mechanism, we managed to have a table which will be able to incline and rub curvy pieces which are variously curved and not just 0 degrees. 

Finally, there is still potential to set the spins on our spindle motor and that makes our machine more effective and secure. Even though, our creation is low in cost it was very time consuming to be made but we have reached our aim with absolute success giving us the pleasure of an exciting constructive journey.

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01 / 10 / 2020 | Videos

Making the Hero's engine replica

It is certainly exciting remaking the first steam machine that has ever been discovered and the feeling watching it to work again was unbelievable by reviving those years of the past. Having this in mind, we remade the steam machine of Heron, the ‘Hero of Alexandria’. 

This was the first machine which needed steam to move. Heron was a Greek Mathematician and Engineer, who was and still is known for his various, remarkable devices. Even though, his steam machine has not any functional application is still quite an exciting device. 

First, we made the boiler of this machine by taking a stainless steel basin of 35cm where we glued a stainless steel iron plate shaping a closed container. Then, taking two small bowls, we welded them together and we shaped a sphere on which we placed two bearings and two nozzles. Bearings are the points where the sphere spins smoothly while the nozzles are the spots where the steam exits with pressure and forces the sphere to spin and move. After, we connected the sphere with tubes from the bearings and we placed it on the boiler so that when the water boils, it passes through the tubes to carry on to the sphere and then exits from the nozzles and the sphere spins. 

Finally, below the boiler, we put a container where the wood for the fire is placed and the boiler gets hot. After trying our device, we got really impressed that this machine worked. Although, its extremely low performance and being functionally useless, it is still a remarkable example in the field of engineering as well as it is an amazing piece of history and decoration.

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14 / 09 / 2020 | Videos

The Drifting Bicycle

An innovative and unique structure comes with the number 0110, which was inspired looking at photos of some kids playing with modified bikes.  

Our general idea was to make a drift bicycle that would be functional and different from all the others. Thus, we decided to make a normal bike but lengthening its back side. We did this to weigh less at the back side where the back wheel is while riding it and achieve better control when the bike drifts. After lengthening the back side of the bike, we put two air piston cylinders there. The purpose of placing these two air piston cylinders is to lift the back wheel so that it won’t touch the ground and the bike will be attached to two plastic surfaces separating it with the ground. These surfaces have reduced friction with the ground as a result the bike drifts on the streets. 

Therefore, pressing an air switch, our bike gets in a drift mode and when the switch is off the bike moves like a normal bike. The pistons needed to work properly by pressing the air switch so that we considered it necessary to create an air tank, insert a battery and apply a compressor. The compressor derives energy of 12v from the battery, produces air that is compressed in 8bars in an air tank and by pressing the air switch, the pistons lift the plastic surfaces down to the ground and the bike drifts on the street providing joy and happiness to the rider. 

In conclusion, our creation functioned amazingly without applying any improvements and making further trials offering us moments of joy, happiness and the rush of adrenaline is getting higher and higher as well as enriching our collection with another peculiar vehicle.

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