Hi All
I have made the shape in the attached file, but I seem to have the problem with a lot of shapes I produce, where it seems to be overly complex once I have made it - I have difficulty turning it into a 3D shape via presspull etc...
What can I do to make it (or create it) in a more simple/user friendly fashion please?
If it helps this is the shape I am trying to reproduce:
It may not get precisely the shape, but at least a lot closer than your mega-vertices Polyline, and with smoother curvature....
It looks like that curve could be just two 90° arcs of different radii, tangent to each other and to lines off their non-shared ends. Turn on Polar tracking [F10]. Start a PLINE command, and beginning at upper right, draw a line segment leftward, switch to Arc mode [which by default will be tangent off the line segment], and use the polar tracking to lock you into a 225° direction so the arc will be locked into a 90° sweep, down and to the left for the first arc segment, and then down and to the right for the lower larger arc segment, then switch back to Line mode for the tail at lower right.
You'll probably need some trial and error to get the points of transition in the right places.
Offset and close ends and Presspull or Loft or Extrude as desired.
Your polyline has way too many veritces (2477). I would start by creating a spline for the curved portion of the shape. Assuming that the slope of the curve is horizontal at its ends (circled below), create horizintal construction lines (green) at the beginning and end of the curve. The lines will be used to specify tangency when creating the spline.
Give the spline command with Fit as the method and with osnap set to endpoint pick at the start of the curve then enter T (tangent) and pick the end of the green line. Now continue picking about 15 to 20 vertices along the outer curve. After picking the last vertex enter T again and pick the end of the other green line. Create the horizontal lines and join them together to make one spline for the outer shape. Offset the curve, add ends and join again. You can use extrude to make the 3D shape.
I agree with what others have said.
I also have a question as to whether press pull is the right choice in that area. The part looks like either a pipe or a rolled edge (I could be completely wrong, but guessing from the picture).
I would suggest not doing a press pull, i would siggest sweeping an profile down the path. If its a pipe, just do a ricle and if its rollfed steel, you can create just the first part of the edge.
CADnoob
@Kent1Cooper wrote:
.... Turn on Polar tracking [F10]. Start a PLINE ....
Using the method in Message 2, laid over your image, I found a pretty good set of points [green -- for reference only, and using a fairly small Snap increment] to make the yellow Polyline that matches the curve pretty nicely:
This is a lot closer to the shape than Spline-based images in this Topic so far, and will use a lot less memory, and the straight ends are really straight, and the tangencies are exact, etc.
Again, Offset and close ends and Extrude/Presspull/Loft as desired.
