Help with Homework-Create Solid Model

[M*M]

i can't do it plz hlpe me

i really do my best :(

[ReMark]

Regarding JDM's observation that one of the holes looks to be off. By my measurement it appears that the hole through the right-side leg is 16 units down from the top of the arc when it should be 18. Use the Move Faces command to literally drag the hole another 2 units down. Note that the normal AutoCAD Move command cannot be used to do this.

[ReMark]

What seems to be the problem? What can't you do. Please be specific.

[M*M]

Will start from the beginning

Can i Start from the front

[ReMark]

I see another problem and it is in the front again. The dimensions for the connection piece are 17 units up from the base and 13 units in height. You have reversed the two.

[ReMark]

Will start from the beginning

Can i Start from the front

 

 

Yes, that is one way to do it. Please pay close attention to the dimensions. Once constructed it can be extruded the required depth which I believe is 32 units.

[M*M]

can u do it 4 me in my country it 8:40 pm

 

and i have no time

[ReMark]

I'm sorry but no I cannot do it for you.

 

Here is what it should look like though. You were very close with your original design although some tweaking (Move Faces) was required and you hadn't finished applying the arc (arch) to the top of each leg.

 

 

Had you followed JDM's very good suggestions from the start you would have been finished by now. Don't give up. I have faith in you that you can accomplish the task.

[M*M]

thank u 4 help

 

i will try and see what can i do

[ReMark]

This is what Slice with a Surface can accomplish.

 

 

The object at the far left has the arc drawn on its face.

 

The object in the center depicts the extruded arc which AutoCAD treats as a Surface.

 

The object at the far right shows the result of using Slice with the Surface option. I elected to keep only the solid below the surface (which can now be erased) rather than "Both" which is the AutoCAD default.

[M*M]

mM2.dwg

i cant drow the arc see

[ReMark]

Front view of object before and after being extruded 32 units.

 

 

Front corners have not been chamfered.

 

Holes in base and legs have not been created.

 

Arched top has not been created.

[M*M]

i start with u

then what should i do

[ReMark]

The arc has a radius of 35 as indicated on the image you provided.

 

The overall height of the object is 64 units. The base is 13 units. That means each leg extends 51 units vertically.

 

The center of the arc can be obtained by drawing a line 16 units up from the top of the base (51 minus 35 = 16) where it intersects with the leg. The arc is centered (front to back) on the face of the leg (16 units in from the front edge).

 

Draw a full circle with a radius of 35 units. Use a simple construction line to trim the arc in the appropriate location then erase the line. Extrude the arc enough to be able to use it to slice both legs. Follow previously provided instructions regarding the use of the Slice command.

[ReMark]

i start with u

then what should i do

 

 

I'm not sure what you are referring to.

 

Draw the front using a polyline. Turn Ortho on. Start at the lower left-hand corner and draw going in a clockwise direction.

 

13 up

25 right

51 up

19 right

34 down

25 right

34 up

19 right

51 down

25 right

13 down

39 left

17 up

35 left

17 down

39 left

 

Reorient your UCS then extrude 32 units. Your result should look exactly like mine in post number 32 above.

[ReMark]

Once your object has been extruded the 32 units create one hole on the face of the right hand leg (33 units up from the base) and extrude it so it passes through both legs then Subtract it.

 

Now would be a good time to create the arc, extrude it and lop off the top of both legs. Subtract out for the holes in the base and chamfer the front corners and you're done.

[M*M]

i stop here ... how i can do the slice

 

mmm.dwg

[ReMark]

Easy. Start the Slice command. When asked by AutoCAD for the object to slice select the object in black (in your drawing).

 

Where it says "Specify start point of slicing plane or..." type the letter "S" for surface.

 

Now pick the extruded arc (red in your drawing).

 

Where it says "Select solid to keep or..." select the black object.

 

Now erase the extruded arc. Done with that task.

[ReMark]

It looks like all you have left to do is put in the four holes and you're done. Two in the base and one in each vertical leg.

 

 

I've got to go now. I trust you have everything you need. I knew you could do it. You just needed to persevere and have some faith in yourself. Good job. Please continue to use CADTutor as a resource. You'll find many knowledgeable, friendly and helpful people here who are more than willing to assist you if you'll let them. Cheers mate.

[M*M]

thank u v.v.v.v.v.v.vrey much

 

i do it:D:D:D

hw10.dwg

 

 

plz ckeck it ok