Need guidance making a cone shape object

[Diplomatti]

Hi there, I am very much a beginner at 3D modelling, i only started last year because i got a 3D Printer.

My dad has asked me to try and make a type of shield for he grass strimmer, a cone shaped item to stop grass from clogging his strimmer.

This is his drawing of what he would like;

I have tried to make one myself, I've attached it to this post for your amusement.
Unfortunately, when i slice to model to be printed, it just makes a weird mess really.
And getting the measurements correct is very difficult to me, because obviously, in the drawing there is no wall thickness, i think 0.8mm would be fine, but i have no idea how i would do that in Sketchup. Also, for some reason i can't explain, the model is at an angle, i have no idea how i managed to do that.

So if anybody could help me out, either by making a model for me or giving me some guidance on doing what i need, i would be very grateful.

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Cone Shield.skp

[Rich O Brien]

There's lots of ways to tackle this. Try using the Circle tool and Move tool as shown below...

Click to play...

[gilles]

FollowMe tool.

[pilou]

Rich has just forgotten to make a thickness to your object!

So you can't Print 3D the cone!

Use the Joint Push Pull by Fredo for that!

[pilou]

And you will use a cool free real time render (max 1920 * 1080)
SimLab Composer Light

[Diplomatti]

Wow guys, i wish I'd joined this forum far sooner!

Thanks to Rich 0 Brien & Pilou Those ideas worked magnificently.

I didn't use Gilles' method, but thanks very much too for showing another way

Edit:

Finished item