Better way to add hooks to angled cylinder?

[jacoblj3333]

Hi, I'm trying to model a traffic signal tunnel visor, and I've got almost all of it correct except for the mounting hooks that secure it to the face of the traffic signal. While it may not be obvious, these visors have a slope downwards, like this. It has proven to be quite hard to model something around the visor because of it. There are four hooks total, and the slots on the hooks should align with the four screw holes on the door, however my various attempts to do this all have failed. Some of the hooks line up and others are way off as shown here.

I have tried:

• Using a tangent plane to sketch directly onto the angled cylindrical face of the visor, but this didn't work right off the bat because there is no way to line up the sketch shapes precisely
• Sketching on the back face of the visor which allowed me to get the hook drawn, however, I've had to manually redraw the hook for the other three contact points which has led to misalignment when it comes to the door. Example. The mirror tool would not work here because the hooks have to be oriented the same direction all the way around.
• After extruding one hook from the sketch, I tried using C-Pattern in face select mode to revolve the faces around the visor, but that resulted in error ("One or more patterns could not be intersected with the original body.").
• Then I tried C-Pattern again in body mode. I selected the extruded hook and it worked this time, however half the hooks are not even touching the visor. Example. Plus, I think the C-Pattern command would not allow me to align the hooks precisely enough for all four hooks.

And finally, each hook has to have a rib going from it to the visor like this, however the sketch required for the rib is hit-or-miss. So far I tried creating a sketch on the side of the hook extrusion, drawing a triangle out so it visually intersects the visor, and then extruding that out since the rib command itself just errors out. As you can imagine, the join between the "rib" and the visor shape is not good, and I cannot easily repeat this for the others unless I figure out how to make the C-Pattern thing work.

In total, there are two unusual situations that makes this component pretty hard to complete:

• The visor has to be at a angle.
• The hooks have to be at a diagonal for all four corners, making it uncomfortable to work with in general.

Orthographic view for anyone who needs it.

Any advice would be nice. I've been working on this file for days now, who knows, maybe some fresh eyes is all it needs.

[TheCADWhisperer]

File >Export and then Attach your *.f3d file here.

[jacoblj3333]

Okay, here is my design.

[davebYYPCU · Accepted solution]

I have not examined your first component, it and the door components went well.

You did not use a circular pattern in the door, so why did you want to go that way in the tunnel.

You seem to be side tracked by the slanted tunnel,

that its made is ok, but hide it with the lightbulb.

It s just a workflow thing, 

Firstly, if a sketch in the door has the same data in the Tunnel Component, use that data again.

There are holes in the door for the hook to align on.  They don't.

Project the hole from the door to the hook sketch, make one hook, then make one rib,

(make them a little over sized on the tunnel end, we can cut them flush with the inside tunnel face later.)

they can be circular patterned with the door sketch being used to align them, somehow you have lost control of the sketches in the tunnel, remember that components are free to move, before you joint, or lock or ground them.

Some things to get you going, 

[jacoblj3333]

I took your advice and based the hook sketch geometry more off of the door, same with the C-Pattern command and got the desired look. However, is it okay to leave these separate bodies like this or should I join them to the visor somehow? Other than that, thank you! I guess a new perspective was all I needed. 

[davebYYPCU]

What to do with them?

What is the end game, if the hooks and ribs are being cut out of sheet metal to be joined to the visor later, 

Leave them as bodies.  I don't use Fusion drawings, but would only need the faces as dxf for cutting, so the end game is what drives the modelling.

Might help...