How do I draw a sheetmetal chute?

[Anonymous]

I am trying to workout how to draw up a sheet metal folded chute.  It has four pcs of steel folded with a flange at the top around 50mm.    

I want to go from an area of 950x435mm tappered down to say a square at about 250x250mm.

Have included supreme drawing for reference.  And also a Fusion file.   

Also if I wanted to offset the opening at the bottom left or right so that it is not centered how do I do that?

[TheCADWhisperer]

You want it as you have sketched it (without mitered corners)?

[Anonymous]

Yes as I have sketched it, except that I only want the two long edges to have the folds.  The two short edges actually need to be just one flat bit of steel.  On the long flanges I will drill a few holes so that I can screw the whole thing up onto the underside of my machine.

I originally thought to make a solid shape, then if I could work out how to place sheetmetal all the way around each side of a solid shape.   I think this is the way you would have to make it if you wanted the bottom hole in the chute to be round instead of square?

[TheCADWhisperer]

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@Anonymous wrote:

1. I originally thought to make a solid shape,

2. I think this is the way you would have to make it if you wanted the bottom hole in the chute to be round instead of square?

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1. It would save me a lot of time if you did model as solid shape - then I could show you how to simply convert to sheet metal.

2. Do you want it to be round at bottom rather than square?  I have posted that solution here many times as well.

[Anonymous]

Okay I have made a solid model.  If you show me how to go from that to sheet, then I can fiddle with the correct dimensions later on.

Yes it would also be nice to know how to do a square to round also.

[TheCADWhisperer]

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@Anonymous wrote:

...  On the long flanges I will drill a few holes ...

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In your latest Attachment - there are no "long flanges" (modeled however you could manage to model, do not need to be sheet metal).

In your latest Attachment Sketch2 is not fully defined.

This was supposed to be the easy steps.

[Anonymous]

Hmm is that because sketch two is a blue line?

What is wrong, how else can it be more defined?  What do I have to do to define it properly?

[TheCADWhisperer]

Edit your second sketch. 

Click and drag a corner point.

What do you observe?

[Anonymous]

Yeah, okay.  So it was able to "float" around the 3d space.  So I used the fix constraint and then made all four lines fixed.

[TheCADWhisperer]

No.

Never (almost) ever use the Fixed constraint.

Poor practice.

[TheCADWhisperer]

@Anonymous 

I left one of the sides for you to complete.

Hopefully you can follow my steps from the previous 3 sides.