Syrup Bottle Lesson

[Carl_Mesrobian]

Hi @mary,

Could you please send me a link to the chocolate bottle lesson?

I’m getting beat up trying to form screw threads along a spiral with sweep1.
Free form looks funky, and roadlike looks like an earthquake

Thanks!

–carl

[Carl_Mesrobian]

Never mind - I figured it out!

[bigpiper246 (John Brock)]

Please consider describing specifically what you figured out to help the next person that has the same problem.
The goal of the discussion forum is to help each other, not just help ourselves.

Thanks

[mary (Mary Ann Fugier)]

Hi @Carl_Mesrobian,
Not sure if you found the video here.
There may be some details or technique that is clarified there.

Sincerely,
Mary Ann Fugier

[Carl_Mesrobian]

Ok, then.

Right now I am having problems with recreating a successful helical thread, so I don’t think it is smart for me to say what I did, as I cannot repeat a successful outcome. I thought at first it was something to do with where the seam starts, but I can only do freeform right now, which I guess is ok. After all, it’s only a model and not a machineable toolpath.

Roadlike looks more like an earthquake.

Here are results, without resetting the seam location

Free form

Roadlike

After some fussing, I found that set axis direction along Y fixed Roadlike behavior

I am thinking that setting the axis is important. I hope this helps someone other than myself - sorry for the autistic-like behavior.

[Carl_Mesrobian]

Yes! that’s the one.. Thank you !

[bigpiper246 (John Brock)]

@Carl_Mesrobian

I am thinking that setting the axis is important. I

Aye, it is. The Roadlike option needs to be set to be parallel to the axis of your spiral. It’s described in the Help file article for Sweep1. If they aren’t set tp be parallel, then the profile changes orientation when it flips over make the mess you accurately described.
If your helix axis is perpendiculat to the World Top CPlane, the Roadlike Top is what you want. Since your helix was parallel to World Y, then Roadlike Front is what you want.

Cheers and thanks for describing what you figured out.

[Carl_Mesrobian]

Thanks!

The syrup bottle lesson used array along curve and Mary set the profiles to roadlike before doing the sweep, which is nifty.

I saw that Pascal does one revolution with RailRevolve, and then just stacks as many thread as he needs. I did one rev with Sweep1 and stacked them. Pretty straightforward after fixing the Roadlike potholes. More than one means to an end.

Where is the best thread making video featuring correct method?

Hi, V5 having seen comments on folk getting the art of thread making wrong, where is the best video with correct technique for this ? To include the nuts thread making as well. I am having to make a 3/8 inch British Standard Fine thread. bolt. I find the attached charts. [BSW AND BSF British Standard Whitworth and British Standard Fine thread bolt nut charts data] [1920px-Whitworth_Thread.svg] I also have something larger ! [threading need] the angled tip is clear of thread, it fades …

That’s for another day, or week! Right now I’m busy with drawing and making a small saw arbor for my CNC machine, and in my case threads on the drawing are just for show - although now I have a 3D printer.