I know this is a really ole thread but I am having trouble with this. I created a cone using revolve and converted it to sheet metal. I can flatten the cone but i need to cut a hole in the cone for an access door. I projected the flat pattern and sketched my door but the cut across bend fails.
INV2009
I know the version is old but its what i've got to work with.
Any help would be greatly appreciated.
P.S. I first tried a surface loft and thicken but couldn't flatten it.
I have attached the ipt here.
I would recommend against using Fixed Constraints.
Create a single angled line sketch (no rectangle).
Revolve as a surface.
Create Rectangle on one of the origin planes as appropriate.
Use the rectangle to trim the opening in your surface.
Thicken your surface.
JD, The reason for using fixed constraints is that i need to match the id of a cylinder at the top of the cone that is 3/8 thk and the od of a cylinder at the bottom that is 1/4" thk. What you didnt see is the rest of the cyclone. I'm working of your soilution. I'll let you know how it turns out.
Thanks
I would use dimensions or projected geometry - not Fixed Constraints.
I still don't understand the reason for Fixed constraints.
Where did you get your construction lines in Sketch1?
Import from AutoCAD?
Actually the fixed points and construction lines were projected geometry from the assembly this part goes into so I guess I did it as suggested. Your process worked out fine. I had to adjust the dimensions of the door cutout a bit to get the desired 12x12 cutout because sketching the door cutout on an origin plane caused it to be off because the sketch isn't parallel to the surface to be cut. But a little fiddling and it works just fine.
Thank you for your help.
You could create a plane tangent to the conic surface for the sketch.
Yea that would get me closer but still need a little adjustment. What I really need is to convince the boss that we need to upgrade to 2014