FreeCAD Forum

Chris_G

result = input_shape.cut(tool_shape)
# or
result = input_shape.cut(list_of_tool_shapes)
# or
result = input_shape.cut(list_of_tool_shapes, tolerance=1e-3)

Chris_G

You need to update the Curves Workbench

Chris_G

- Select your sketch.
- In the Attachment properties
- Click the Map Mode Value, then click the box with three points
- It will wait for a selection.
- click the cylinder face in the 3D view, then OK
- your sketch should now have its Support property set to "Cylinder [Face1]"

: sketch.png (71.11 KiB) Viewed 40 times

Chris_G

2) How do I position a whole sketch (I do have the sketch an need to move it translatory from one point to another)? You don't. You'd better move the blue rectangle. If your target face is a cylinder, you can constraint your blue rectangle to Cylinder.Height and 2*pi*Cylinder.Radius. Then you can s...

Chris_G

Hi,
Yes, I did a big rework of Sketch_on_surface.
Here is a little doc on how it works now :
https://wiki.freecadweb.org/Curves_SketchOnSurface

Chris_G

I changed the code to the following, don't really understand the (1,1) but (1,1) are u,v parameters on the face. Since the face is planar, the normal should be the same for any u,v. However, the normal's length is 1.0 So, the height of the extrude is 1.0 too. So the function will return a thin slic...

Chris_G

Ah makes more sense, penny is slowly dropping that Part makes Shapes. Just to be clear : - Part.Plane() create a geometry / Part. make Plane() create a shape - Part.Cylinder() create a geometry / Part. make Cylinder() create a shape ... and so on Does not like plane.Axis*1e10. Ooops, sorry, I didn'...

Chris_G

When I create a Plane with topPlane = Part.makePlane(100, 100, FreeCAD.Vector(0,0,5),FreeCAD.Vector(1,0,1)) and call I get error f = plane.toShape() <class 'AttributeError'>: 'Part.Face' object has no attribute 'toShape' My example code was suppose to work with a geometry plane. The Part.makeSometh...

Chris_G

Code: Select all

def cut_cylinder_with_plane(cyl, plane):
    "Cut a cylinder with a plane"
    f = plane.toShape()
    so = f.extrude(plane.Axis*1e10)
    cut = cyl.cut(so)
    common = cyl.common(so)
    return cut, common

Chris_G

Okay I can create a cylinder with Part.makeCylinder although when I try with cyl = Part.makeCylinder(radius,height,[pnt,dir,angle]) it does not like the third parameter, complains it is not a list and wants a Vector. The brackets don't stand for a python list, but mean that these parameters are opt...

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