I rarely recommend that people create threads, as it is usually a waste of computer resources. (you are creating a lot of complex surfaces for no real benefit) However, it is not all that hard to cut threads. To cut a thread into an existing part, you will define the outline of a cross section of your thread on a workplane in the proper location. (For a simple thread, it will look like a triangle) Be sure the triangle extends beyond the boundary of the part. I also describe a vertical construction line on the center line of the part (use this as an Axis reference in the helix command) In the Helix (remove) command you select the axis, enter in the pitch of the thread, and how many turns you need. You can also specify right or left hand. Use preview. If your 2D profile is so large that the cut overlaps on itself, it will fail. (self intersecting) This means your pitch is too small, or the large end of your triangle is too large.
