Great idea, thanks. 👍

Agreed, Creo‘s Helical Sweep offers more functionality. For the outline profile there is a straightforward workaround in Fusion, variable pitch afaik poses a problem in Fusion.

@@getprototyping I wonder if a plugin can be designed for such purpose

Maybe I will look into it at some point, but probably not within the next few weeks.

Can be certainly done like that. Excellent way to make the process even more efficient. 👌

Yes and no. Depends on the shape of the thread profile. If you would do this with the thread profile containing curved surface like the one in the multistart version of this video then it wouldn't work. Not trying to be mean, I value a mind that analyses what it sees, just brainstorming here ;)

There are a number of scenarios where standardized threads do not work well. Most commonly, standard clearances are generally unsuitable for 3d printed solutions. I generally like to have full control over the thread design when I print both components. Also, there is an virtually infinite number of uncommon (or even non-standardized) threads out there you might want to interface to (jars, bottles, fine threads, even sawtooth profiles, buttress, tapered threads, ...).

@@getprototyping As for clearance, sure. I just use machine screws, but scale the males to 98%, and then blend them back into the body. Tolerance is not an issue, when you know how to compensate for it. As for interfacing with existing artifacts, sure. That makes sense. But for all my work, this seems like a complete waste of time. It there is an industry standard, and it is easy to stick with, like standard m-sized screws up to medium size, it is a really, really, good practice, to follow the norms and standards of the industry. I actually consider it bad practice to use something non-standard unless there is a serious reason for it. Not too long ago, I made a duct using m115. I needed to stretch it in the z, as in altering the thread, as the default threading has way too much overhang to be printable. But since it is a stretched m115 thread, it may be reproduced by anyone at any time. For instance to support the right to repair. Also, and I sort of know this intemately, using too many repeating patterns in an assembly renders it almost unrenderable. The part itself quickly turns into a nightmare to work with. If you have never seen Fusion eat like 120GB of ram, then you sort of have not used patterns for real. You probably have never waited for 30 minutes for an assembly file to open either. But that caching, it is amazing. I still so no reason what so ever, to standardize on this technique. I see a ton of reasons, for this be considered bad practice, for most designs. Buy hey. If you need to fasten it to a non-standard thread, you sort of need to. I just never faced that need.

There are a number of scenarios where standardized threads do not work well. Most commonly, standard clearances are generally unsuitable for 3d printed solutions. I generally like to have full control over the thread design when I print both components. Also, there is an virtually infinite number of uncommon (or even non-standardized) threads out there you might want to interface to (jars, bottles, fine threads, even sawtooth profiles, buttress, tapered threads, ...).

It is called a Buttress thread. The top chamfer makes it look a little more special than it is in the crossection view.

Thanks! Will make one about joints and animating soon.

Sorry if this frustrates you. I decided to make it short focus on essentials of the process rather than every single step.

The diameter of the initial coil does not matter.