How would you build this part? - complex shape hlp plz

[Rich05]

Should this be built any of these ways?: Ill say right now I do not have much experience with organic shapes or complex shape modeling. I have Lobard's book its nice. but does not really cover me on best way to do this.

1) Solid Extrude with cut extrude, camphers, filets, and solid extrudes added as well

2) Lofted with a series of sketchs to act as guid curve and profiles. (From left to right)

3) Made with surfaces and then surfaces thickened

4) The use of strech and deform to 1) above to replace cuts and extra extrudes?

5) OTHER or which combinations of above.


This body has a couple things about it too, it must have a draft for a mold, it must have shape that will avoid things like stearing mechanisms below it. The client wants this to be a blow mold. similar to a plastic sled, this means it has a seem, a mold, a draft, and it is hollow, but completely sealed, if a hole goes through the part the hole has to be like that in a donut (that is sealed on the walls).

The part in this picture is made with a solid and many cuts going from different planes, it is difficult to modify, the client may ask for changes to the model. I need it fairly easy to modify or is that hoping for too much?

Last question how many hours would you budget, and what price for a decent model not counting mold. This is for proto-type level manufacture.

This is just a crude start, holding off until I know going in the best direction.

Regards,R

[highspeedmazak]

That is really a pretty simple part what are the dimensions of length, width and height? What material is it? How much time do you have to make it? What are the tolerances?

[Rich05]

about 50" x 25" x 6" high tollerances .01 roughly about 1 week to create part

would you just make a solid extrude and make cuts on it? or go fancier made with lofts or sufacing?

I can make the part with solid but wanted it a bit more sophisticated and resultings in a more flowing look. and hopefully very easy to modify.

[highspeedmazak]

What material?

[Rich05]

What material?

plastic, molded, not sure which plastic they are going to decide on, but it will be hollow. making it hollow probably is not needed though for modeling but it would be nice.

[highspeedmazak]

Are you wanting to make the mold or the actual part?

[Rich05]

not required but would be a bonus to be able to make a mold part from it.

[highspeedmazak]

1) Solid Extrude with cut extrude, camphers, filets, and solid extrudes added as well

2) Lofted with a series of sketchs to act as guid curve and profiles. (From left to right)

3) Made with surfaces and then surfaces thickened

4) The use of strech and deform to 1) above to replace cuts and extra extrudes?

5) OTHER or which combinations of above.

I would just start with #1 I have not tried to do this part but it should be pretty easy.

[Rich05]

Thats about how I usually do things to.

I want to get more aggresive with the advanced surface modeling if that is really the way it is done. Seems that there are more advanced ways to make a car body that result in nicer lines, a more flexible model in terms of revisions, less broken surfaces which make applying textures nicer, or projecting geometry.

[Mike Stevenson]

That part cannot be made with a blow mold.

[warrenb]

Not quite sure what I'm looking at here. Is that a mold? Or do you want the shape on the inside?

[Rich05]

not sure really how he wants to make it other than this will be a plastic body made out of two parts. kind of like a sled. it then secures to gocart.