Threading a screw with Draft

[PEC]

Hi @W.L

Welcome to the forum.
I suggest reading this post

Scew design until tip

Hi, @McD solution is the best to go fast, I use it also a lot. @Horsthorst : what you asked for is not immediate (at least for me, I spent a couple of hours on it this Sunday ) . Here is a way to get a decent result. [image] You must create the body 1 of the screw (shape 1) and the cropping body 2 of the thread (shape 2) using spline tool, in order to get smooth bodies with no edge in the thread region. Then, create a thread blank by revolving the rectangle 3 (thread pitch is 2.2…

Here is a .shapr version with the history so you can play with it

Wood Screw parametric.shapr (394.0 KB)