Curved surface from flat

[deRabes]

Hi

I'm looking for the best way to change the surface of a flat piece of wood board with some holes and hollows in it, to a curved surface maintaining the holes etc. The curve will start at the outside edges and be higher in the middle.

Thanks

TopCheek.ipt

[JD Mather]

Perhaps when you learn to use dimensions - someone can help you.

How do you get a perfect length line without dimensioning?

Why are you deleting dimensions?

Are you using AutoCAD as your sketcher?

Have you read this document http://home.pct.edu/~jmather/SkillsUSA%20University.pdf ?

[deRabes]

Perhaps someone with a slightly less smug demeanour might be able to address my query.

[JD Mather]

I spend significant time and effort helping users solve their problems here.

For some reason I expect them to demonstrate effort on their problems as well.

 

When I see undimensioned sketches after having tried to help on previous problems I don't have full appreciation of their efforts (sorry about that).

 

When I see sick sketches along with undimensioned sketches after previous attempted instruction on creating robust sketches, I don't have full appreciation of the effort of the designer. For some reason I expect indications that my earlier efforts to help have resulted in learning improved modeling techniques. Good luck! I'm sure a better teacher than me will be along shortly.

 

[JD Mather]

Starting from a solid foundation is the first step in creating anything.

Notice that when I dimension your sketch only two of the dimensions make logical sense - and for some reason you deleted these?

Notice that the sketch appears that you had symmetry in mind - but when I apply all of the dimensions that should be needed - one side is not fully constrained.

 

 

For some reason I am always reluctant to move on to the real problem when the evidence indicates that foundation principles are not understood. Perhaps it is because in my experience those who ignore the foundation principles never grasp the more complex techniques.

Edited September 2, 2012 by JD Mather

[JD Mather]

What is the purpose of Sketch7? There is nothing in it?

What is the purpose of Sketch9? There is nothing in it?

 

Didn't you intend for both fillets in PadPocketOutside sketch to be Tangent?

Didn't you intend for both fillets in PadPocketInside sketch to be Tangent?

 

Did you intend for the fillet in HingePlate sketch to be Tangent?

 

Did you intend for this tiny sliver of material?

If, so how come it is not there on the other side of what looks like was supposed to be a symmetrical feature (in fact it cuts in a tiny amount on the other side).

 

Dimensioning and symmetry constraints solves these problems.

The principles of robust modeling are the same for any CAD program.

The GIGO principle applies.

Just the facts of the case the way I see it.

Edited August 30, 2012 by JD Mather

[CADTutor]

Perhaps when you learn to use dimensions - someone can help you.

How do you get a perfect length line without dimensioning?

Why are you deleting dimensions?

Are you using AutoCAD as your sketcher?

Have you read this document http://home.pct.edu/~jmather/SkillsUSA%20University.pdf ?

 

JD, there really is no need to be quite so rude to other members. Your help is valued here but sometimes your attitude makes this forum look unwelcoming. A more even-handed approach would be appreciated.

[JD Mather]

There is a certain frustration when you spend significant time trying to help someone and yet they continue to make the same mistakes.

There is nothing more basic in Inventor than dimensioning a sketch. The people out on the shop floor lose their jobs if they don't follow dimensions, the designer can make a similar (minimal) effort. To me it indicates that they actually care about their work. The GIGO principle still applies.

 

If the OP is willing to start from Sketch1 step-by-step to work towards a solution I will spend significant time in working with them.

[Dadgad]

From what little I have seen of, and played with INVENTOR, it seems that the basic premise

and inherent superiority of the program is pretty much based on the ease of dimensioning, and

reasonably effortless application of parametric constraints.