topic Re: need extrude help in AutoCAD Forum

need extrude help

Anonymous — Tue, 05 Apr 2016 14:16:14 GMT

ok so im definitely new when it comes to making things in 3d but i have this drawing that im trying to extrude at an angle but i cant for the life of me figure this out. if you are able to do it, could you walk me through on how you did this? any help would be greatly appreciated.

Re: need extrude help

Patchy — Tue, 05 Apr 2016 14:23:31 GMT

Like this?

Re: need extrude help

Anonymous — Tue, 05 Apr 2016 15:10:58 GMT

@Patchy wrote:
Like this?

Or they could have meant like this 🙂

Or this..... 🙂

🙂

Re: need extrude help

Kent1Cooper — Tue, 05 Apr 2016 15:39:21 GMT

@Anonymous wrote:

ok so im definitely new when it comes to making things in 3d but i have this drawing that im trying to extrude at an angle but i cant for the life of me figure this out. if you are able to do it, could you walk me through on how you did this? any help would be greatly appreciated.

I'll assume that the upper part of the drawing is a plan view, and the lower part an elevation, and that the trick is getting the notches/serrations to run diagonally through the resulting Solid, since ordinary Extrude won't do that for you. The drawing doesn't "tell the whole story" about what should happen at the ends, so you would need to play around with some additional Extrude and/or Union and/or Subtract and so on in those areas. But for the diagonal-notches stretch through the middle, try this:

Make a Polyline of the elevation-view outline. [There's a duplicated Line that makes PEDIT/Joining a problem, but BOUNDARY works.] Copy that at a displacement of 0,0,2 [2 units up in the Z direction to make the plan-view thickness]. Move the upper copy to the left by the delta-X value of one of the diagonal Lines in the plan view. [You can draw a Line from the upper end of one of them, perpendicular to the bottom edge Line, and from there over to the lower end of the diagonal, and use the Endpoints of that short horizontal Line for the Copy displacement.] LOFT between the two Polylines to make a 3D Solid that has those diagonal notches.

You can play with the UCS and Rotate and Move it to align with the plan view.

Re: need extrude help

Anonymous — Tue, 05 Apr 2016 15:47:17 GMT

@Patchy

this is what im looking for but i totally cheated to get this view. the "teeth" of this part is the only thing that is being extruded at an angle on 20 degrees.

Re: need extrude help

Anonymous — Tue, 05 Apr 2016 15:48:07 GMT

@Anonymous

this is what im looking for but i totally cheated to get this view. the "teeth" of this part is the only thing that is being extruded at an angle on 20 degrees.

Re: need extrude help

Anonymous — Tue, 05 Apr 2016 15:49:33 GMT

@Kent1Cooper

this is what im looking for but i totally cheated to get this view. the "teeth" of this part is the only thing that is being extruded at an angle on 20 degrees.

Re: need extrude help

Patchy — Tue, 05 Apr 2016 16:04:17 GMT

Make 2 profiles then loft after that use union.

Re: need extrude help

Kent1Cooper — Tue, 05 Apr 2016 16:05:34 GMT

@Anonymous wrote:

@Kent1Cooper

this is what im looking for but i totally cheated to get this view. the "teeth" of this part is the only thing that is being extruded at an angle on 20 degrees.

So it looks like the end parts can be simply Extruded, and the middle stretch Lofted as I described to get that angle. If you draw a couple of thoughtfully placed vertical Lines across the elevation view, Boundary can give you three separate Polylines to do those separate things to. [And I think I should have suggested that you Move the lower Polyline to the right, rather than the upper one to the left, to get the teeth in the right position in the length of the thing, if the elevation outline shows the near side of them.]

Re: need extrude help

parkr4st — Tue, 05 Apr 2016 16:13:38 GMT

maybe?

Re: need extrude help

JDMather — Tue, 05 Apr 2016 16:27:49 GMT

@Anonymous wrote:

....this is what im looking for but i totally cheated .....

There is no need to make the identical response to each participant - everyone sees every response.

Re: need extrude help

Anonymous — Tue, 05 Apr 2016 16:57:18 GMT

@Patchy

HOLY CRAP!!!! pretty much the solution that im looking for!!! ive done what youve suggested and its almost done except for that last tooth. i want that last tooth to have priority over the non angled post. so the tooth would appear to cut away some of the post. how can i do that?

Re: need extrude help

Anonymous — Tue, 05 Apr 2016 16:58:05 GMT

sorry. im pretty much a total noob on here. 😕

Re: need extrude help

Anonymous — Wed, 06 Apr 2016 14:02:31 GMT

anyone?

Re: need extrude help

Kent1Cooper — Wed, 06 Apr 2016 14:42:57 GMT

@Anonymous wrote:

.... i want that last tooth to have priority over the non angled post. so the tooth would appear to cut away some of the post. how can i do that?

Make a Polyline outline of the full-length part below the posts, separate from Polylines for the post parts above that full-length level. STRETCH the adjustment of one base-level Polyline and LOFT between those as before, and just EXTRUDE the upper post parts [or, if you prefer, copy them 2 units away and also LOFT between those]. Use UNION to join them all together.