 So, now look at this make a round shape use the same high-tech rolling machines get a flat front and we went this with this model we made a small model this time we were like careful we made a small scale model the size of you know 15 centimeter scale and we took this model to India post directly to the ministry to Delhi and they said no we told you round there is a flat front I said how does it matter flat front is convenient for people to take out letters right if you open a flat door it is convenient to take out letters so we put the flat front they said no no now they become very rigid we want round as round now we are facing the music we said ok we will make a round design and we redesigned using the same materials better manufacturing and went back you know I am showing you how we went ahead making the CAD models the whole structure the different parts in that the landings the door in round shape the you know the top posting slot in an interesting shape to you know match the overall configuration of the post box you can see how we made the base also now with the rigid structure inside with a round you know round base we could have had a square base but we now we do not want to take any chances and then we suddenly got a call again from Delhi that we have got this Commonwealth Games happening and there is a large exhibition and we need to put up this new round box in the exhibition so from CAD modeling we have to rush to prototyping they want a single piece we got all the you know stuff out we went to local craftsmen in look at the sheet that looks rusted but you know when it's treated it becomes shining so they rolled that's a rolling machine on which you roll your sheet then you do all the fabrication by welding all the surfaces are all well together then you do the painting we did the painting processes painted them after treatment so that there's no rusting inside and then we did the top the round top we've learned our lesson so like we did the hinges the doors the details pretty tough we had the whole team to work on this we had expert team of 10 people working on this at that time and then we put up one in your main building just for photography and you know like we sent this prototype to Delhi and they put up in the exhibition the secretary is very happy the director is very happy in India poses it wow this is the in thing and then interesting thing happens the secretary also retired so we were again in a fix we waited for a long time six months we waited no no result came up and then a new secretary came up who knew our work earlier so he contacted us they what's happening to your post box he asked me I said my god this is interesting let me get back to my old design so I leave frog to my old design I said I have the box I just there's a problem only with the red color I just waited red and it's going to work for you and I'm going to change the top to a rounded top marry the old and the new and it'll be both we put the old and the new during tech fest exhibition in IIT and then we call this man from Delhi he came and inaugurated the you know sort of exhibition so here we have again the square box painted red because there's an advantage of manufacturing in square no you fold very easily rather than rolling and then you know we sort of you know like did the tooling now now what happened is by that time we realized that on the 200 boxes when the plastic top went people thought that they could recycle the plastic so people were actually stealing the plastic tops Jilai is a difficult material to recycle they were not able to sell it but nevertheless they would put a bamboo rod inside and back it out and won't sell it plastic top is not going to work so we went back we said we'll make a metal top bolted to the you know to the structure so that nobody can you know sort of take it away so this is the tooling now my team from IDC start working we made it die this metal die we did deep drawing deep drawing is a process where you have a sheet metal and you have a large press which presses the sheet metal to get the shapes all your car bodies are deep drawn the rounded shapes of your car bodies the large tooling and dies but this is a very small one for us so we did these metal tops so this is the top and this top what is interesting this top is it's got a feel of the old and the new the round is from the earlier design and the square is from the new design and when it's in red color there was very good recognizing people had no doubt there was a post box so which is the best part in design so went ahead in the process we you know fabricated the top we did the deep drawing we got the sheet metal part out and we painted it and we so excited about the whole journey that we published a book on you know the design read through to see the whole story of how the design process went so here we are now we would like to take it to mass production we didn't do a very good survey very initially we were so carried away by the city users everybody said good the paper said good but finally when it went to those areas and district areas we got to know that you know it's very difficult so I will you know quickly show you through these models now so as we just to summarize so we had the top which is big this was the first 20 numbers we produced the box was manufactured through CNC the beauty about computer numerical control manufacturing is that you could actually manufacture 10 or 200 on the same machine which is the beauty of mass manufacturing in these machines so next we went ahead and change the top as you know this was the 200 numbers which came in and this 200 numbers you know well received but then we realized that the problem was with identification and then the final aspect which had come up was this design where you can see that you know we retained all the you know beautiful aspects the color is red and the top is around and the full thing is in metal so that's the final design which came up so I think it's a good example of crafting where you have you know you have engineering strengths coming in manufacturing strengths coming in and a lot of innovation from point of view of contemporary materials from plastics to metal to stainless steel so finally what we did was because the steel because the stainless steel is not using the shining property right and that is a costliest part of the stainless steel which is called nickel so we now have a material which is low nickel stainless steel so in the no we have a low nickel stainless steel and on the low nickel stainless steel we are doing powder coating so there's one more protection so now that is going to work very well in this aspect so I thought I'll just show you this total journey because this reached a stage of pilot production going back to original concepts and the two on four happened nearly three times and still we are waiting for our sort of you know approval to go into mass scale production.