topic Re: Hole tool NPT thread missing modeled option in Fusion Design, Validate & Document Forum

Hole tool NPT thread missing modeled option

fungus_among_us — Fri, 19 Jun 2020 14:27:33 GMT

Hi all,

I have a part that needs two 1/2"NPT threads, and it will be printed on an SLA printer. The thread tool has a "modeled" option which works, but I do not see a "modeled" option for the hole tool when "thread" is selected. I'm not using the thread tool because NPT is _still_ not available there.

The browser "modeled threads" option is enabled.

Thanks for any help!

Re: Hole tool NPT thread missing modeled option

harry.doldersum — Fri, 19 Jun 2020 15:50:22 GMT

To answer 1 of your remarks: the hole function can provide you with a modeled tapped hole - however, to reach the checkmark for the option "Modeled" you may need to scroll the option box down, though... it's at the bottom. On my screen, it's not visible either - I also need to scroll to reach it. Maybe you missed that?

As for the missing NPT option: that's indeed dearly missed,

Hope this helps a bit. 🙂

Re: Hole tool NPT thread missing modeled option

HughesTooling — Fri, 19 Jun 2020 15:54:48 GMT

Fusion can not generate tapered threads at all unless you want to model them.

What you could try is use McMaster Carr from the insert menu and download a part with a thread in it or use a plug. Using a plug will not really give the correct thread form but might do.

I found this cap, you should be able to combine it with your part.

Mark

Re: Hole tool NPT thread missing modeled option

harry.doldersum — Fri, 19 Jun 2020 16:06:38 GMT

I've struggled with NPT threads in the past too - but your suggestion to use a standard plug as cutting tool is a most welcome work-around: it gets the job done. Much appreciated! 🙂

Re: Hole tool NPT thread missing modeled option

fungus_among_us — Fri, 19 Jun 2020 16:47:36 GMT

Hi Harry,

I do not see such an option within my settings:

If it's not too much trouble on your end, could you screenshot what you see?

HughesTooling, I have used a plug as a negative in the past, but you're at the mercy of the manufacturer at that point... I'd prefer to model them manually before that. These SLA printers are surprisingly precise, so you can get usable threads out of them.

EDIT: Also, the modeling option within the hole tool should be superseded by the browser toggle, no?

Re: Hole tool NPT thread missing modeled option

HughesTooling — Fri, 19 Jun 2020 16:55:51 GMT

The browser option is just a quick way to toggle all threads in the design as in a big design you would not want modeled threads while working on the design. You can still override the document setting for individual hole features.

Also, as I said Fusion does not create modeled taper threads from the hole or thread tool.

Mark

Re: Hole tool NPT thread missing modeled option

harry.doldersum — Fri, 19 Jun 2020 17:04:14 GMT

No, you're completely right: the checkmark isn't showing for NPT threads, that option is not available. As I said, NPT is dearly missed. The modeling option is only showing for parallel thread profiles: should you select an ISO metric one, the checkmark will pop into the dialog at the bottom

Re: Hole tool NPT thread missing modeled option

fungus_among_us — Fri, 19 Jun 2020 18:25:51 GMT

@HughesTooling , you actually said:

Fusion can not generate tapered threads at all unless you want to model them.

Not trying to be contrary, but I asked further because you stated that Fusion could not create tapered threads at all, which it can through its thread tool (only DIN, ISO & BSP unfortunately).

@harry.doldersum, thank you for taking the time to do a sanity check! I see now what you were speaking of. Looks like I'll be modeling them for the time being.

Thank you both for the help.

Re: Hole tool NPT thread missing modeled option

fungus_among_us — Fri, 19 Jun 2020 18:40:33 GMT

Which is apparently confusion on my part, as none of those are tapered. You are correct that the thread tool cannot generate ANY tapered threads.

Thank you.

Re: Hole tool NPT thread missing modeled option

HughesTooling — Fri, 19 Jun 2020 20:14:45 GMT

@fungus_among_us wrote:

@HughesTooling , you actually said:

Fusion can not generate tapered threads at all unless you want to model them.

Not trying to be contrary, but I asked further because you stated that Fusion could not create tapered threads at all, which it can through its thread tool (only DIN, ISO & BSP unfortunately).

Thank you both for the help.

Not sure what you mean, I was stating Fusion can't generate modeled taper threads (Thread and Hole feature), as far as I can see it can't. From what I can see the thread feature can't produce any tapered threads, modeled or cosmetic. The hole feature can produce tapered cosmetic threads but that's it. Think the tapered hole created by the hole tool is the correct core size for the thread and can be used in the manufacture workspace as a reference for thread milling.

Mark

Re: Hole tool NPT thread missing modeled option

HughesTooling — Fri, 19 Jun 2020 20:18:51 GMT

@fungus_among_us wrote:

Looks like I'll be modeling them for the time being.

Thank you both for the help.

Don't know if you've thought of this. If you're modeling the thread yourself you could create a plug in a separate design then insert it and combine cut so you don't need to model every time.

Mark

Re: Hole tool NPT thread missing modeled option

Anonymous — Wed, 30 Dec 2020 13:40:39 GMT

@HughesTooling This worked perfectly for me. Had to clean up the plug dimensions to match my model, but the NPT threads worked.

Re: Hole tool NPT thread missing modeled option

matthew.sanders545 — Mon, 23 Aug 2021 05:11:03 GMT

The modeled Feature is no longer an option. Has fusion 360 really made this process that hard to implement. Do we really need to select "modeled" for it to actually work the way we want??!

Re: Hole tool NPT thread missing modeled option

Daveb1972 — Mon, 14 Feb 2022 15:18:12 GMT

I don't understand why NPT threading isn't available. This feature is in many cad programs, after being told this fusion would replace those for us, we seem to be lacking in capability......

Re: Hole tool NPT thread missing modeled option

dbogroupr — Sun, 27 Mar 2022 13:08:14 GMT

I want to keep this topic alive as ongoing feedback to Autodesk, yes it is too bad we can't automatically create NPT threads in fusion by using threading functions that work so great with other threads.

Re: Hole tool NPT thread missing modeled option

dewaine50 — Wed, 06 Apr 2022 01:51:07 GMT

Bumping this thread. It's been years. Still no NPT option. For something so small, that every other CAD software has, this is ridiculous.

Re: Hole tool NPT thread missing modeled option

dbogroupr — Thu, 07 Apr 2022 12:36:14 GMT

Agree, cutting and gluing with pieces of McMaster-Carr fittings is not an elegant practice, while modeling the taper and the spiral is a huge drag on the human and a perfect task for a computer.

Re: Hole tool NPT thread missing modeled option

wilczakd — Sat, 20 Aug 2022 01:13:41 GMT

Bumping. It's been years. Still no NPT option! Pretty sad to not have such a common feature. I don't know if it's laziness driving no change or it's a fundamental flaw in their software. Either way it's not a good look for the fusion 360 team.

Re: Hole tool NPT thread missing modeled option

ditcheldiablo — Sat, 27 Aug 2022 21:58:29 GMT

I was trying to model a npt thread this week yo 3d print a prototype but as gheres no feTure to model a thread I've been having to tap my 3d prints. What's not really what I want ho be doing as it adds another process to my prototyping

Re: Hole tool NPT thread missing modeled option

dbogroupr — Sat, 27 Aug 2022 23:34:56 GMT

You could use parts of McMaster-Carr fitting step file, as a tool or a
piece of your model. This will not give you a correct model of the thread
but is probably close enough for 3d printed parts.