3D Angles

[cooperAL5P5]

I've been having a lot of trouble trying to boil down my problem in simple words, but here is my best shot:

I need to model a cylinder at a 3D angle relative to the Top plane, where the angle is constrained/specified by a Side view angle and a Front view angle. In other words, how do you specify an angle in 3D space?

It gets trickier, as I need the edge of the cylinder to be a certain distance from the Top plane, regardless of the angle, but I'm trying to start just by planning out the 3D angle problem.

Do I create a single line in a 3D sketch somehow and use the pipe tool? Do I create a rectangle that I can revolve around itself somehow at a fancy 3D angle? (I know how the cylinder's angles look from the Front and Side view, drawn out like diagonal rectangles.)

Can anyone point my in the right direction? Many thanks!

[TheCADWhisperer]

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@cooperAL5P5 wrote:

My only remaining confusion is that strange 2 1/4" diameter

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Pick center line for axis of revolution.

Pick point or line for radius.

Right click and set to Diameter Dimension...

In the Attached file I added holes with a bit of clearance for  your legs.

[g-andresen]

Hi,

Here is a comparison of the results of two approaches.
The contact to the tabletop can be made in many different ways.

revolve vs. extrude to body & taper

günther

[TheCADWhisperer]

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@g-andresen wrote:

The contact to the tabletop can be made in many different ways.

günther

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The OP stated:

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@cooperAL5P5 wrote:

It gets trickier, as I need the edge of the cylinder to be a certain distance from the Top plane, regardless of the angle,...

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and offset is shown in the OP's original sketch with perpendicular end to cylinder (less costly to manufacture).

[g-andresen]

Hi,

What do you really want to say with this article?
1. The main focus of the article is the question how to align table legs in two directions at an angle to the table top.
Is this fulfilled?
2. What are the additional costs for a second double miter cut compared to a right-angled?
3. How do you create a blind hole at a defined point on a curved surface and what costs are to be estimated for this.

Günther

[TheCADWhisperer]

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@g-andresen wrote:

Hi,

What do you really want to say with this article?
1. The main focus of the article is the question how to align table legs in two directions at an angle to the table top.
Is this fulfilled?
2. What are the additional costs for a second double miter cut compared to a right-angled?
3. How do you create a blind hole at a defined point on a curved surface and what costs are to be estimated for this.

Günther

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1. The OP will have to confirm.

2. Right angle is essentially "free". In any case - miter cut at that end does not match the OP's Design Intent.

3. Workhold tooling.  The same technique for either type.  Whether it is blind hole or through hole is irrelevant as far as setting up the part to be drilled at correct angle.  For blind hole >>Forstner Bit<<.  Design should match the OP's intent.  

[g-andresen]

Hi,

I wish you now and for the future a lot of pleasure in the role of a know-it-all.

günther

[cooperAL5P5]

😞

Both of your solutions were helpful for me to understand ways to go about this. I'm not sure what's wrong with more information as to how each solution relates to design intent and also practical manufacturing capability. I appreciate all that info, it really helps me understand different ways to think about this.

I did think the edge of the cylinder to the top plan was a relevant measurement to how the legs end up in 3D space (because of centerlines being vertical to each other), but the other solution might have shifted the design intent for the better.

Either way, no need to be rude, it's all good info as someone who is learning. Thanks again for the help!