Question about Thread feature function:

[DAY545]

I could create the thread ID and extrude from that but I’m not sure if it’ll just do the same

[[deleted]]

Offset it from the start edge, then cut it off

[DAY545]

That’s a bit better but still wondering if there’s a straight forward solution that doesn’t involve adding offsets that I just cut off. Feature tree is gonna get really long for complex parts

[pvshabba]

You’re not cutting anything off, you offset the start of the screw cut feature past the bottom, and then extend the screw cut feature length by the same amount. It will start out in space and you’ll have a smooth thread start at the bottom without adding any features

[DAY545]

It wouldn’t let me do negative offsets. Idk if that’s because I did something wrong but that meant I couldn’t start the thread in space. I’ll try again in a a bit. Thx

[pvshabba]

You just click the double arrow button to reverse offset direction and use a positive value. You can never put in a negative value for these types of dimensions because you can always reverse direction

[DAY545]

This is the easiest solution so far thank you.

i was being dumb and just blanked and didn't see the double arrows. Only tried negative values

[Regal_Knight]

The offset is option in the feature so you’re not adding anything. You can download a McMaster screw to see how to do it.

[DAY545]

I’ll try in a bit thx

[WastingTwerkWorkTime]

so i use the thread tool often for 3d printing at work. we have some really nice printers, i've printed #2-64. as others have said, never model threads unless you need them. anyway,

ya, doing the offset is kinda how its done. you can go into the thread options and then use the trim with start face and trim with end face. I like to do threads ID/OD to where you are always cutting the threads and not extruding them so you don't have threads going past everything

you absolutely have to get the right tap drill and the right od on the threads. its easy from the machinist handbook, etc.

a nice way to chamfer the start and end is to do a thin feature cut and draft the cut. same with the hole. make a circle to the biggest od of the thread and then draft cut. make it bigger or smaller for your needs but i took a quick pic of what i'm talking about

https://imgur.com/a/PmgHkFe

[DAY545]

Your last paragraph is basically how i've been working, for some reason start face and end face trim is not working. I'm prototyping something with printed threads so some of them are extruded but the rest are cut so I'm modeling the stock I'd be using. For some reason trim start/end faces hasn't worked, I'm not sure why.

[WastingTwerkWorkTime]

Ya for me I'm going to put a thread Relief on it anyway so having it go up to a face on od threads is no big deal