 So, we will be drawing the first angle projections of this object, we are viewing this object along this direction. So, this is my frontal plane, this is my top plane and this is my right side profile plane. So, in the first angle projection, the front view comes over here at the top. The top view would come below the front view and the right side profile view will come to the left side of the front view. Let us take a look at dimensions of this object broadly. So, the height is 115 millimeters, the width is 115 millimeters, the length is about 45 plus 45 90, 90 and 65 about 155 millimeters. So, as I said it is always a nice idea to be prepared. So, I have prepared the sketches for this object, let me place the object also here. So, this is the front view of the object, the top view of the object and the right side profile view of the object. Broadly the dimensions 115, 115, 90 plus 65. So, there are bunch of holes here 1 and 2, so 1 hole here, the other one here. So, if I look at this object from the top, I see this arc as a semicircle in the top view. In the side view this is a slant plane, in the front view however, this will not be a semicircle, something that will have to be a little careful about. So, we will get this curve rather from the projections of this semicircular arc and this slant line, we will see how while we are drawing. So, as I said we have 2 through holes both of diameter 5, 22, 1 here and the other one here take 2 and the other one here. Let us start drawing, so I take my object away for a while, I place it down here and I keep my sketches over here. I plan my sheet, so that my front view comes over here, the top view comes here and the right side profile view comes over here somewhere. I plan my work sheet in such a way that my front view comes over here, my top view comes below the front view over here somewhere and my right side profile view of the object comes on the left hand side of the front view. So, these dimensions are 115 and 115 which would make it about 23 centimeters or 230 millimeters, I will take one of my set squares and try to get an idea. So, this is about 22, so looks like I will have to be starting my front view somewhere over here, so that I do not hit this part of the work sheet. And the width of the object is about 90 plus 65 which is 155, so this is about 25 centimeters or 250 millimeters, 155 would be here somewhere. So, let us stay close to the right margin of the sheet. So, let us start by drawing the bounding boxes for the front and the top view to start with. Once again this is having the H grade 0.5 mm lead, this is having the 2 H grade 0.5 mm lead, I use this for construction and projection lines and I use this for solid lines. So, let me have the green pencil hand, the idea throughout the entire drawing is to avoid using these friends, they are not good for the sheet as well as for the time. Let me get this height first, so this is about 12 centimeters and this would be about 18, let me see if my drafter is fixed all right. So, I am all aligned to the horizontal margin, maybe not so very well aligned to the vertical margin, this is not a very accurate drafter. So, I will have to deal with this, but for now it is coming back to the front view of the object 115, perhaps from here and maybe I will shift a little on the right, let me also not stay very close to the margins perhaps here. So, I start from here draw a vertical line, very dim line and then from here I go 165 millimeters to the right, again dim lines 115 millimeters from here which is probably here dim vertical line and horizontal line. The box in the box for the top view will be of identical dimensions, let me leave some gap between the front view and the top view and some gap for the dimensions, maybe I can come further down or maybe not. So, this is about 115 and then 16.5 to the right, 16.5 to the right from the top and a vertical line on the right. Let me relate these two bounding boxes via projection lines and let me also separate these boxes by hinge lines. So, they are going to be solid dash small dash small dash big dash that is the convention for the hinge line here, I cannot see this line perhaps that is alright. Maybe I can also have the bounding box for the right side profile view. So, I will switch my pencils, I will go from here and then this dimension this would be the same as this dimension 115, I do not need to stay too far from the front view perhaps right about there. Horizontal line, vertical line which is again of the same size as this 115 is a dim lines alright and then this is the line that I cannot see draw anyways. And let me relate these three boxes now with projection lines once again these two views are separated by a hinge line. So, I will draw that so far so good. And then if I look at the sketch these two views are going to be related by a series of projection lines over here and they will be deviating through this 45 degree line. Now, for that I will have to project this line to the left rather keep it a dim line project this line vertically down project this line down not too much but may be till here. And then project this line at this point I draw my pencil. So, even though I did not want to use this friend of mine I am forced to use it, but I do not have the excuse of erasing the main construction line of projection lines. So, I would not worry about that. Now, if I use my 45, 45 set square and join these two lines rather join these two points I can expect this angle to be 45 degrees. And let me see if I really have it looks like I really have it I will walk with that my sketch sheet back here my object here. So, both are for my reference and a gulp of tea down my throat back to work may be I can think about starting with the top view because I seem to have all the features in there. So, I can draw this vertical line it is a solid line. So, I am going to be using a different color pencil H pencil rather. And then from here to here it is a solid line rather it is a solid line throughout. So, I am going to draw that I cannot see this top line otherwise my head is going to be blocking the view. So, I draw this line with leap of faith it looks like it is. So, remember I am drawing the top view here what is this distance do I have this this corresponds to this distance here probably I may not have that. But, may be I will have the dimensions corresponding to this 65 and then this is 45. So, I can may be go ahead and draw this block about 65 here and let me record this point by a projection line which I think I am going to be using for my profile view I am using the wrong pencil. So, I have to switch that this is at 45 this length is 45. So, may be I can go ahead and make that till may be here and then of course this line is solid this line is solid this line is solid this line is solid. So, I will make these two lines as solid lines using the wrong pencil. So, this part is done may be will be a nice idea this time for me to project this line up on to the front view I will be needing this projection anyways later. Let me see if this is 45 looks like it is alright. So, let me remind myself that I am still working with the top view of the object. So, this is 22.5 from here to here. So, I will have an axis I will have a vertical axis let me mark this as probably marking the wrong dimension. So, this is 25 I should be marking 22.5. So, that I am focusing and not making mistakes. So, this axis is at 22.5 from this vertical line. So, let me measure that this is about 22.5 not very accurate, but still. So, let me mark it and then let me draw the center line it is going to be a solid h grid line long dash short dash long shot long shot long. So, far so good I am trying to figure which pencil I am going to be using now, but anyways I am focusing on this through hole here the diameter which is 22. So, before drawing the circle in the top rather in the front view let me draw the hidden lines because I know these lines are going to be hidden in the top view and I can of course get these dimensions. So, 11 from here and 11 from here let me mark these two points and then draw the hidden lines I swap my pencils again these are going to be short dashed and I can project these lines upwards to relate to the circle in the front view. So, this part of the top view is taken care of let me worry about this part now. So, this distance is 90. So, this vertical line will be distance 90 from this vertical line for now I will just mark it and then draw a light line. Now, look at this center here it is at 45 from here and 45 from here and the radius is 19. So, perhaps I already know the position of the center line which is at 45 millimeters from the vertical line right here may be. So, I will go ahead and draw the center line dash dot or long dash short dash. So, I have the center and I am going to be looking at my stencil first if I have a circle with diameter 38 looks like I just missed it by 2 millimeters. So, I will have to use my compass let me test my compass seems to be working fine well. So, this distance is 19 this distance is 19. So, maybe I will just mark them make sure I have chosen the center appropriately looks like I have and then draw the circle in one go may be the second go and then using the edge line or edge pencil draw these two horizontal lines. So, I am not really sure about this feature although I have sketched my previews as to what this dimension is going to be. So, I will hope that I will get it from the projections from the profile view for now let me switch over to the front view and start drawing it this is 115 I have already marked it. So, not be scared straight away use the solid line or straight away draw the solid line using the edge pencil there you go and then this height is 18 I know where this discontinuity comes from here I will project that I am using a dimmer pencil now and I will project this thing over here also on to the front view. So, this would be a solid line at least of length 18 this is perhaps of 18 and then I will draw this solid line and then I will draw two horizontal maybe I should project it a little more and then join these points using an edge pencil I have these two vertical lines and then this line will be solid throughout you know why because of course this line is solid this line is solid and this line will be the projection of this arc that we will be seeing in the front view. So, let me go ahead and draw this horizontal line solid this top line will be a solid line I cannot see that once again I will cross my drafter and pencil and hopefully I am not making a double line as I did last time nice. Now, this block do I know the height of this block, but perhaps I know this dimension. So, maybe I can extend this horizontal line in the front view. So, this is 35. So, this is 35. So, I can measure that let me take my other friends and request them to seat or to be seated on a separate location. So, this is 35 I am using a wrong pencil, but anyhow I am going to be needing my edge pencil and this is my solid line and of course this is my solid line. So, far so good this height is 30 and these two are solid lines. So, I am going to retain my edge pencil in my hand draw this horizontal solid line to a vertical line this feature done and of course I am going to be drawing this solid line. Make sure I do not lose gaps or I do not leave gaps. Now, this axis is at 32 millimeters from the vertical line on the right I hope I set it right 32 millimeters. So, let me retain the edge pencil with me of mark 32 millimeters from the right and then I can go ahead and draw the center line long dash short dash long short long short and then this hole is of diameter 22. So, once again I measure 11 to the left 11 to the right and then draw the corresponding hidden lines this time small dashes how about this block I probably still have no idea or may be I do or may be I do not let me think I think I may have to get this from the projections. So, let me try switching my pencils sipping on my T and getting back to the drawing sheet may be can get started from the bottom itself. Since, I have to work on the profile view anyways there is a horizontal solid line I have this projection I switch pencils I join this feature here I relate this feature to the profile view with this projection line this line is a solid line I do not know if you can see this, but let me shift this perhaps here. So, this line is solid line and then the slant surface here starts from this vertex and ends at this vertex and of course, this vertical line is solid line let me go ahead and mark this first and now using my set square I draw this vertical line rather I draw this slant line it is too long my friend goes back this close friend of mine comes back I am ready to take this projection up to the profile view swap the lines rather I will swap the pencils perhaps up to this point. And then from here I draw this line and then of course, this would be a solid line as well again the problem of double lines because I cannot have my eyes directly over this horizontal line nevertheless. Now, if I look at these two horizontal lines and if I take these projections on to the left I will see these solid horizontal lines let me draw them first the projection line and then the solid line once again first the projection line and then the solid line which is now going to go up till the slant surface alright. So, I was wondering what this height was what this height was. So, looks like I now have it I now have it through the projection emanating from the profile view right there and of course, this block is going to be a solid block. So, two solid lines how about the circle let me first figure out the center for the circle. So, it is at height 25 rather it is 25 millimeters below this horizontal line and of course, it lies along this vertical line. So, why do not I go ahead and draw the center lines anyways center line vertical line anyways. So, long dash shot long shot long shot and then measuring 25 from there a horizontal center line long shot long shot long well and then this is 522 I look at my stencil this is my circle that I need to be using right there I align the center lines of course, accurate stencils would do a better job, but for now just for demonstration I align these center lines and I hope I am well I still have these vertical projection lines from here for reference. And then I go anchor circle well I am not supposed to be doing this again, but just to make sure I got the top left part of the arc right you know little better alright. So, I got everything in the front view except for this arc which definitely I know is not going to be semicircular. So, I will wait till I make this arc. So, I just came back from a break I have to figure out where I left last. So, if I am to compare my sketches with the drawing over here looks like I am pretty much done with the front view except for this curve which I do not know how to get at this time well I know how to get at this time, but I probably am not very much prepared. So, what I will do instead is focus on this part of the top view which is what is little tricky and in particular I would be focusing on how I would get this edge and this edge. So, if I take a look at my profile view in the sketch looks like this edge is going to come via the projection lines from this vertex. So, having said that maybe I will draw the projection line from here I am going to be using a 2 H pencil for this will be take it a little down and then draw horizontal projection all the way up till this point. So, once I have this I know this line of mine will be here. So, I will draw a solid line and then I will draw this vertical solid line this line will be solid again. Since, I already have the H pencil in my hand I will go ahead and do that. Now, I need to worry about how I would get this line. So, in my front view this surface is represented by this line it is projected on to the profile view here is that line and if I take a projection down to the top view and then horizontal projection line right there. So, this is how I would be getting this line and since this line is solid I am going to go ahead and use my H pencil. So, in the top view this line would show via this line here rather this line when in fact this line is going to be projected on to this line and this line is going to be seen here. So, I will make this solid and then how about any line if it is present in this region. So, if I look through this part of the object this entire thing is continuous or if I look at the horizontal plane below. So, this plane here this vertical plane here and this horizontal plane of course are connected by this edge and corresponding to this discontinuity between the two planes in section line between the two planes I will see an edge not visible, but hidden in between these two vertices. So, I will draw a hidden line a bunch of dashes. So, this completes this feature of mine all I am left to do is to draw this circle I know where the vertical center is. So, I just draw that I just draw the corresponding center line and then of course I am working with the top view. So, this point is at distance of 20 millimeters from this edge 20 millimeters I measure that mark it and then I draw the horizontal center line and this hole through hole is of diameter 22 right there. So, I am going to be using my stencil maybe it is a nice idea for me to draw the projection lines first since I already have the corresponding circular feature in my front view. So, that it gives me a nice reference to place my stencil now that I have the projection lines I try to fit a circle with diameter 22 seems probably all right this looks all right. So, I have pretty much everything covered up I have this block all right I have cylindrical hole here all right hidden lines center lines circular arc center lines solid line hidden line solid line three lines center lines circle and vertical line. So, this part is done well maybe I will just mark it in my front view I have this part covered I have these two places covered I still have to work with this arc. So, I put a question mark and I have this part of the view covered in the profile view. However, I do not have the projections corresponding to the circle on this block and the projections corresponding to the circle over here maybe I should k. So, here would be by first hand line I draw the projection line from the circle and then I can see that line and then I will draw the projection from this part by the way would this be going throughout up till this edge it looks like it will. So, maybe I should extend these dash lines likewise I go over top get the projection line first and then get the hidden lines perhaps I am using dashes longer than I should be using, but anyhow and then we have the center line I got that part. So, this is cover and how about this hole. So, will be coming from the projections from here first thing I need to do is project the center line and then of course, this circle would be in between these two lines the corresponding solid lines are here. So, I need to be a little careful because this solid line and this certain line are quite close to each other. Anyways I will take the projection from the circle on to my profile view there I go and first would be the center line which I draw now and then the first hidden line I have to be using the projection lines I need to correlate each feature in each view to every feature in every other view these dashes look little better smaller and better how I prefer and again this projection line here I have been swapping pencils left and right pretty much done this is cover looks like my profile view oh no no no how about this hidden line this would correspond to this feature here remember it is a void. So, this pretty much like a cylinder or rather a slant plane cut by a cylindrical surface. So, I will have to project this on to the profile view which I do now and then I go up have the corresponding hidden line shown using small dashes pretty much all right. So, let me compare again once again to remind myself this part is done I still have to work on this arc and to compare the profile views I have got this part all right I have got this part all right I have got these two lines here and here I have got this center line here two dashed lines left and right of that center line and I have got this center line right there these two hidden lines of course, got this slant surface this vertical line here horizontal line here corresponding to this. So, speak sliced block right there so looks like I am pretty much done except for the fact that I still need to work on this figure and how do I do this I have to be using projections explicitly for that well. So, to get an idea or to give an idea this is how the curve in the front view is going to be. So, it is the intersection between the cylindrical surface and this slant surface this is where my cylindrical surfaces in the top view this my slant surface in the right side profile view. So, what I will be doing is I will be marking different points here taking the projections on to the profile view taking the projections on to the front view and then getting these projections back from the profile view to the front view finally, the intersections of the corresponding projections and then those points will give me the required curve all right. So, let me get started with that may be a nice idea for me to mark these points symmetrically. So, I will use the protractor that I have with my 90 45 45 set square and may be I will use a very dim line to mark the points. So, one would be here let us say at 30 degrees each that will probably give us some nice spacing and then using the same set square I am going to be joining the center of the circle with the respective points may be just you know mark the points. So, one was right there the other one is right here or why do not I use the radial lines instead. So, that the construction becomes lot more clearer 60 degree line right there I can just use my mini drafter and get the corresponding point here on the left side of the arc and then the radial line. So, may be I can start projecting these on to the slant surface this is the first one. So, now that I have the points on this arc may be I will start projecting them to the slant surface in the profile view. So, here is the first one I am using very dim lines second one and I already have the third one and this projection from this would be the same and projection from this point would be the same. So, I do not need to be using other projection lines anyhow. So, let me project this line on to this slant surface this line on to this slant surface well I am quite short now I think I am ok well let me make it a little darker all right. So, these projections let me use a little rectangle here to bind these projection lines as I said my drafter is not very accurate. So, I need to keep calibrating it time and again, but anyhow. So, this box will pretty much do the job of binding the intersections between the projection lines right there. So, I project this point this point corresponds to this point on the arc all right and then make a horizontal projection from here make a horizontal projection from here this would be the ideal way of getting the curve. And then use the vertical projection from this point from this point of the arc I already have the projection, but I will kind of make a continuous line and then vertical projection from this. Although I am terminating these projection lines at this horizontal line I am going to go up and I am going to extend the lines anyway all right. So, I go up I extend these projection lines. So, the points that are going to be lying on the curve this point I am not going to be indenting the sheet too hard with the tip of the pencil, but enough. So, that I understand what the points are and then intersection between this projection line and this projection line here. I hope I get it right again just little dot same on the right and then two projections to the left from the center two projections from the top right there and right there and of course, these points will also lie on the curve. Once I have these points maybe I can use another friend of mine think about joining the four points using the French curve inside. Of course, it is not going to be accurate, but good enough for me to represent the arc hopefully I get it right. Maybe I just invert that maybe try to get a nice fit well for the first time well rather for the second time I guess I am going to be using an eraser it is ok for me to use it it is not a major mistake, but ideally I should have avoided that. Now, let me go back and complete the projection lines just to make sure that my grader if any would understand what I have done and then grade me based on that. Getting back to the French curve again well perhaps again this is not a is not accurate fit perhaps good enough for the purpose of course, the tangent here will be horizontal. So, maybe I will erase that little I am trying to be as fair as possible in my work and then perhaps draw a curve that pretty much gives me a horizontal tangent maybe at this time I will just draw a free hand. So, you would notice that this point is not lying on the curve, but that is ok alright. So, this completes the drawing I believe what we are left with are the dimensions. So, in the previous example I had used aligned scheme of dimensioning this time I guess I am going to be using the center line scheme of dimensioning well this dimension is 95 and 65, 155 and I am going to be writing this thing perhaps I am not concentrating too hard. This height is about 115 vertical arrow widths and maybe I will write this thing here this would be the top view. So, this is done with this dimension is 65 smaller dimensions are closer to the drawing larger dimensions are further away from the drawing. So, this is 65 this one gone these two dimensions are 45 each. So, arrow heads. So, this is 45 and this is 45 I am trying to print though perhaps I am not that successful. So, these two dimensions gone it is always a nice idea to go to the circles and specify their diameter well I am done with this sketch. So, maybe I will just keep it aside for that maybe it is a good idea for me to get the leaders from here I use a combination of my drafter and the 45 set square get the 45 degree line like. So, make an arrow head let go of my set square draw horizontal line then dimension of course, using center line 5 20 ideally I should be showing many of these dimensions in the front view. But, because I do not want to reach up there and block the view I am trying to show these dimensions on the top view. So, these dimensions are done with I can dimension this distance as well this is 32 let me check it is really correct looks like it is. So, this dimension gone this is 20. So, maybe I can dimension this, but I am going to be using a slightly different strategy because I do not want to dimension within the drawing. So, I am going to be using set of arrows like this then of course, this is 20. So, here I might this height in the front view is 25 this height here and this is 22.5. So, perhaps I need to extend the center line once again use a different scheme draw the arrow heads and then mark this as 22 point is probably not come out properly. But, anyways will do the job 25 is this height this is done with this alright. So, this height is 18 maybe I can mark this here my dimension lines are getting darker now, but I think I am in a hurry to go back home this 18 is marked alright. So, this distance 65. So, perhaps I can mark this 65 here once again it is because of convenience that I am mentioning all the dimensions in the top view ideally I should have been mentioning these dimensions alongside the front view this would be 65. And then I realize that I made a little mistake I used the aligned scheme of dimensioning here. So, maybe I will erase that and I will mention 32 did I mark this dimension possibly not this is the height that I will be getting in the front view. So, perhaps I will have to go to the front view get this dimension recorded this is 30 my printing style is also getting changed that is alright top view I have gotten this, but I have not gotten this dimension perhaps I can mention this dimension here maybe I need to extend my construction line from here construction line from here projection line from here make sure I am parallel to this little adjustments that I am making to my drafter ideally I should be doing that, but anyways. So, this is 115 I want to make sure that I align myself along this number. So, this is also taken care of what am I left with alright. So, this would be 2 holes of course. So, I am left with these 2 dimensions 45 and 19 let me take care of 19 first use a 45 degree leader this looks like little inconvenient well I do not need to necessarily use a 45 degree leader I can as well use a 30 degree or 60 degree leader if I need to and I can use one of these projection lines as a reference the figure would look much neater. So, I will draw a little arrow head here and then I will use a horizontal again let me remind myself that I am doing center line dimensioning. So, this would be R this is taken care of now this dimension here 45 how important this is it is important because that would locate the center of this white perhaps I can well, but I already have this 45 marked over here. So, maybe I will not worry about that too much. So, things like scale something that I have not mentioned maybe I should mention over here scale 1 is to 1 and I should also mention my details and of course, you know who I am if you do not you will probably know who I am alright. Thank you.