11 / 01 / 2017 | Videos

ELECTROMAGNET from microwave transformers



At the 0054 video, we experimented using transformers from broken microwaves making a very strong electromagnet. This electromagnet is intended to be placed on the crane that we have already made in our workshop in order to be able to lift heavy, metallic objects. 

To start the particular project, we removed the transformers from three destroyed microwaves. Then, we cut the upper surface of the transformer and we removed the secondary coil replacing it with the primary one. In this way, we turned the transformer into an electromagnet. The same procedure has been followed in all the three transformers.

As soon as we measured the dimensions of the three transformers, we took a circular flange of 10mm thickness and 25cm long that was punctured in the middle in order to place a metallic noose and this is the point that we are going to use to hang our electromagnet on the crane. Around the flange, we conglutinated a metallic wrath made out of a bar of 5cm width and 5mm thickness. The internal sum of the height of the wrath is 4cm as it is the width of the bar minus the width of the flange. 

Afterwards, we placed the transformers in the construction, that has been already mentioned above and they have been conglutinated softly in order to avoid changing place at the following stage of the procedure. Next, we connected our electromagnets in a row and we estimated their electrical resistance in order to be aware of the right transformer for electrical supply. As long as the connections have been applied, we put supports on the sides at the internal part of the metallic wrath. Also, we checked if our electromagnets function well and then we proceeded with our project by filling up our metallic frame with resin. 

At first, we put resin that is used at the fiberglass and then we used epoxy resin combined with black colour. The reason that we used common resin, initially, was because the epoxy resin is much more expensive. Doing this, we filled the gaps creating a very concrete construction increasing the electric performance and protecting the coil as well as our connections from any damages during its use. Due to the fact that the surface was now hard, we removed any unnecessary material from the resin and we used the milling machine to make the surface smoother. 

Also, removing the unnecessary material from the fame, we managed to decrease the metallic height of the transformer, too. In this way, we achieved to increase the power of the electromagnets. 

Moreover, the particular construction is able to be moved anywhere out of the shop and be placed in various lifting machines as it can be electrically supplied by batteries and the crane stored in our shop is electrically supplied by a transformer 24v 15A as well as by batteries. The reason of doing that is for safety purposes as in case the electricity supplied by the transformer is interrupted for any reason, the electromagnet will automatically be electrically supplied by the batteries and not stop working. Therefore, the object that is held at the particular moment will not be dropped preventing any possible accidents. Additionally, an alarm has been applied to warn before the blackout occurs in order to fix the problem immediately and so that the object takes its time to be put down. 

Every time the electromagnet works properly, a red light lights on the crane indicating that everything works fine. The strength of the particular electromagnet is impressive as in every experiment we carried out lifting more than 200kg, its performance was excellent without occurring any problems. The electromagnet should be normally electrically supplied by a transformer 48v 12A but because that was impossible to happen due to its high cost we used a transformer that we already had instead.

Finally, we believe that our electromagnet has the power to lift more than 600kg under ideal circumstances (thickness of a metal, efficient electrical supply, kind of material). Although, the particular construction is ideal to meet our needs, in the future, we might make a much bigger electromagnet using more transformers just for experimental purposes and to satisfy our personal desire!






































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26 / 12 / 2016 | Videos

Extreme scissor lift shoes


This week’s construction was made up by the animations and in particular the children’s series ‘Inspector Gadget’. There are many times in our lives that we wish that there was a way to reach the highest points on our shelves and furniture at home in order to be able to do our housework properly. Therefore, we decided to experiment a creation that would be able to do that in our workshop. 

This time, our aim was to make shoes that by the pressing of a button, they would be lifted high while pressing the same button again, they would be coming down. Even if the particular aim sounds easy to be achieved, the factors that will make this construction complicated are plenty. 

First of all, the weight of the shoes is one of the main reasons that makes our procedure of creating them difficult as well as the weight of the person that will be lifted to the highest point wearing the shoes. Also, the mechanism that will move the construction and many other factors considered. 

To start with, we made a base made of stainless steel. Then, we made two scissors consisted by 6 pieces each of 30cm. These two scissors were connected by tubes of 8mm thickness made of stainless steel and then they have been made by square tubes of 6mm thickness. Placing the screws of 6mm and the tubes, we made a common scissor of 12cm width. Its height when its parts are united is 12cm while when they are separated is 75cm. The whole construction was conglutinated with tig welder as the particular creation has many small pieces so the detail matters. 

Regarding the inclination and the declination of the scissor we used pistons of compressed air taken by old, office chairs. We placed 2 pistons on each shoe to achieve our goal and lift the loads exerted successfully. Thus, while pressing the buttons the shoe is going up if the individual does not exert his whole weight on the one shoe. When the buttons are released, the piston does not move backwards so the shoe supports the whole load. After, when the user wants to go down, he exerts his whole weight on the one shoe pressing the buttons of the pistons so the shoe goes down and the same procedure is followed with the other pair as well. 

On the top of our construction, we screwed two old shoes for security matters and these shoes have an iron, metal plate inside their sole that makes them very stable. We also used 5 springs in each shoe to empower the move of our scissors and to achieve a more stable and smooth movement. 

After all these efforts, our experiment reached the final stage of trials. Wearing the particular shoes, we tried to be lifted using one foot each time which is the safest way in order to avoid instabilities. However, we also tried to make a saltation in order to open both shoes simultaneously. Although, this is a more dangerous way to lift up, it is the most impressive way to do so. Then, we tried to make some steps which is very hard to be achieved as the weight of the shoes is heavy enough. We also used them in multiple tasks with a great success such as to change the lamp, to polish some high points, to clean a tall car and to cut fruits from a tree so we enjoyed using our creation. 

Our primary aim was achieved as we brought to life one of our childhood’s fantasies. To use it securely though, the shoes should be made by more stable materials like carbon fiber and having a bigger basis to support them.

However, we are glad to have these unusual shoes in our house’s decoration and maybe we will use them for a housework in case we don’t have any other alternatives. The same mechanism used for the shoes was also used for many other constructions such as the briefcase table.
 
Finally, what we keep completing this experiment is the knowledge that we acquired as well as every great moment that we had making this construction.


































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19 / 12 / 2016 | Videos

Dining Table 2


We had the opportunity to make another dining table in order to satisfy a good friend’s request to create one for him by giving us a very beautiful piece of wood. The particular piece of wood has an irregular shape as it is a horizontal slice taken by an IROKO tree. Not only its irregular shape but also the shades of the internal tree bark make the surface of our wooden table look incredibly beautiful.

Measuring the width from the edges of the wooden piece, we made two metallic frames of 68cm height and their width is equal to the wooden surface. For the making of this metallic framework, we used a blade of 10mm thickness and 10cm width. These two frames were connected with a metallic blade in order to have a stable base as well as a stable table. Therefore, we punctured the metallic frames in various points besides the central point so that when the wood would be screwed the table would become much more stable. The width of the table is about 85cm and its length is 240cm while its height is 75cm

Moreover, under the metallic points that touch the ground, we placed soft floor mats in order to avoid damaging the table or the floor by its use. The final touch of our metallic framework was made after we had painted all the metallic points with wheat and then with lead. 

After we had perfectly rubbed the whole wooden surface with a belt sander, then with an orbit sander and afterwards with a finishing sander with sandpapers of 40 grit, 160 grit and 240 grit, we managed to have a very smooth surface that was painted with satin varnish twice. 

In conclusion, combining the framework in mat lead colour with the satin varnish that was used to paint the wood, we have reached an outstanding outcome. Finally, another great touch on our table is our logo that was made with our handmade pyrographer, which electrically heats the logo of the ‘make it extreme’ team and shapes it on the surface in a magical way!
























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18 / 11 / 2016 | Videos

Make it Extreme's Crane



In this week’s video, we came up with the idea of making a crane in order to improve our ‘make it extreme’ shop and include another useful tool in our collection. The crane is a very useful tool in a workshop for multiple purposes such as lifting heavy objects that we need to work on as well as lifting things that we want to paint and according to each user’s needs and imagination its uses get multiplied. Therefore, we made our crane on our workbench in order to enable us to lift objects on it. 

To start with, we primarily made a rectangular, metallic framework of 4 meters length and 76 cm height made out of square tubes with dimensions 60x60x2mm. Then, we filled the rectangular framework with square tubes’ pieces of 60x40x2 that were placed in a 45-degree slope at the right and left side of the rectangular framework and in this way we managed to form our netting. The purpose of the formation of this netting is to multiply its tolerance in lifting heavier loads as much as possible.

Carrying on with our construction, two metallic rails were placed on the framework, on which our winchi of the crane will be moving forward and backward. Afterwards, we made another metallic, netting framework but smaller this time and we put 4 heavy, metallic wheels and an electric winch that is able to lift 500 kg on it. 

The particular construction moves along the 4meters framework in order to be able to lift objects from various positions at this length. If we wish, we could make it move in 4 different directions but in our case this wouldn’t work as our space in our workshop is limited so it can service our needs as it is.

Regarding the portable part of the crane was made with a slope so that the slope of our foundation will be counterbalanced and the weight of the objects will be exerted vertically as well as the loads will be allocated accordingly. Additionally, the portable part is inclined outwardly so that it won’t be removed from the rails regardless the weight of the load placed on it. 

There is also, another safety valve that is located where the winchi is. To achieve this, we placed a metallic plate below the winchi that will stop the drop of the winch in case the screws that support it get removed. 

Finally, we would like to declare that we are absolutely satisfied with our construction as our workshop’s potential has been increased. Now, we are able to lift a load and move it easily as the portable part of the crane slides in a very low power and combined to the ‘make it extreme’ work bench, the usefulness of our space is amazing.



























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02 / 11 / 2016 | Videos

Electric Drift Skatekart


On the 50th video of the ‘make it extreme’ team, the construction that is presented is a vehicle. This vehicle looks like something between a mini go kart and a skateboard. Therefore, the name that we gave to this construction is a ‘skatekart’. Our main aim making the particular creation was to make a special skateboard that would drift. This construction, besides a means of transportation and a vehicle of entertainment, it is also a construction that has multiple aspects of interest. 

Firstly, we took some metallic pieces from a treadmill machine and then we altered them making the metallic framework of our construction in order to apply all the other pieces of the vehicle on it.

Afterwards, at the back side of the framework, we placed 2 bearings, in which an axis of 70 cm long and 20 mm thick is passing through it. Also, two wheels and a pulley, which moves according to the motor were placed on this axis. Additionally, the wheels that were placed at the back side of the vehicle, were made out of a black Teflon at the lathe. We chose this Teflon because it is harder than the white one and regarding the aesthetic aspect it is better in this case. 

The wheels that we made, were placed on the axis with aluminum components, which were also made at the lathe in order to achieve the simultaneous rotation of both the axis and the wheels. The wheels made of Teflon have 12 cm diameter and 13 cm length while the pulley, which was placed on the axis, has 10 cm diameter. 

Regarding the frontal part of our vehicle, we have chosen rubber wheels in order to achieve the required stability while turning the vehicle. These frontal wheels have 10 cm diameter and 10 cm length. The particular wheels are used for other purposes but after our alterations that we have applied on them, they have become the ideal ones to be used as frontal wheels for our vehicle. The turning of the frontal wheels is controlled electrically by using a motor and a mechanism of an automated window from a car as well as some pieces of a car’s wiper that we used to make our system.

Using this motor of 12 volts, a battery and the switch of the particular mechanism, we created this system. Therefore, when we turn the switch on the right, the vehicle turns right as well. While turning it on the left, the vehicle also turns left. 

Regarding the motor, we used an electrical one of 1000w, 48v and 3000rpm. It is a very powerful motor for such a vehicle but we faced many problems in order to be able to control it as we didn’t have the controller of the particular motor. The batteries, which were used, weren’t the proper ones but the high cost of the suitable batteries made their use impossible. We were willing to use a lithium battery but instead we used lead acid battery. Thus, we had an excessive weight and less performance as well as tolerance. The motor was being activated using a relay switch, although due to the start and the excessive use, the relay switch was damaged. 

Also, the cover of our vehicle was made of a piece of aluminum, sheet metal. The cover was decided to be painted in the competitive colours of the repsol of the moto gp. Moreover, we did a test drive of our vehicle on slippery surfaces, on the streets and on soil surfaces. 

Our final conclusion is that is very entertaining to drive such a vehicle on slippery surfaces as you can drift without exceeding the speed limit and being in danger. To be able to drive this vehicle on the soil and on the streets, one of the surfaces should be stuck on the wheels with Teflon tires so that our vehicle won’t be too slippery. During our trials, we used an anti-slip tape and the performance of our vehicle on the soil was changed immediately. Undoubtedly, this construction will be an unforgettable experience to us as we enjoyed every single second of making this project!!!







































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