An introduction based on the examples contained in tutorials 1 – 5.
The work flow in tutorial no 4 and 5 shows how to switching between different workbenches in Freecad 0.17. More; we combine two types of modelling. The solid modelling is supplemented with surface. Separately each of this methods has some restrictions, work with both gives an enormous high flexibility. Division solid and surface comes from differences in the approach to construction and its editing.
First I look into solid modelling. In this method we make a filled inside solid.
The proceeding is as follows:
Choose a plan for your sketch which is the base for your solid.
Draw the sketch – closed profile and give the dimension to make a fully constrained.
Now the sketch is ready to create a solid.
The very important is to create a closed profile if you are willing to make a solid. The profile it could be made as a sketch in Sketcher or a drawing in Draft. We can edit our profile in Part Design or Part Workbench. There are several ways to do this.
Below is the brief of the possibilities of creation:
In Freecad we can extrude our profile with tool pad in Part Design or extrude tool in Part Workbench. This technique is very simple and has some properties which make it a very useful in many cases.
To build solids by rotation choose the revolve command in the Part Design or Part panel. This technique is based on the rotation of the profile relative to the axis determined by us. The axis can be one of the profile lines, the axis of the coordinate system and also we can create a completely new axis with the datum line tool as well. Using the datum line we can get very different effects. In the revolve tool options, you can specify the value of the rotation angle – it does not have to be always 360 degrees.
Loft technique is based on shaping a solid by a program based on two or more profiles we have arranged. Profiles can be the same or different. In this method, we can also use a line or point to build a solid.
Now we have our solid – what`s next? The following features are made simmilar by adding next shapes. We have also many other tools to make our model better like pocket, hole, groove, pattern features, mirror, fillet, chamfer and other.