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From: cadout on 16 Mar 2007 13:44
Other than showing that threading is there, what is the purpose of
cosmetic threads? Is it just what you can use to represent threads
without actually creating them? I'm attempting to create screws and am
wondering what the pros and cons are between cosmetic threads and
creating actual threads in my design.

From: Zander on 16 Mar 2007 14:21
On Mar 16, 1:44 pm, "cadout" <kenda.bra...(a)gmail.com> wrote:
> Other than showing that threading is there, what is the purpose of
> cosmetic threads? Is it just what you can use to represent threads
> without actually creating them? I'm attempting to create screws and am
> wondering what the pros and cons are between cosmetic threads and
> creating actual threads in my design.

Not sure about others, but using cosmetic threads mean that the hole
in the model is the tap drill size and not the major thread diameter.
Which is usefull for things being laser/water cut cnc machined.
Basically the cosmetic thread will show up in your drawing and hole
notes for documentation but not in your 3d export data.

Zander

From: Martin Rees on 16 Mar 2007 14:39
The down side is that the cosmetic thread does not in some cases give a
completely accurate measure of mass an c of g, due to the cut away metrial
of an internal thread remaining present on the model

Martin Rees

"Zander" <bkandor(a)gmail.com> wrote in message
news:1174069286.099084.242350(a)b75g2000hsg.googlegroups.com...
> On Mar 16, 1:44 pm, "cadout" <kenda.bra...(a)gmail.com> wrote:
>> Other than showing that threading is there, what is the purpose of
>> cosmetic threads? Is it just what you can use to represent threads
>> without actually creating them? I'm attempting to create screws and am
>> wondering what the pros and cons are between cosmetic threads and
>> creating actual threads in my design.
>
> Not sure about others, but using cosmetic threads mean that the hole
> in the model is the tap drill size and not the major thread diameter.
> Which is usefull for things being laser/water cut cnc machined.
> Basically the cosmetic thread will show up in your drawing and hole
> notes for documentation but not in your 3d export data.
>
> Zander
>


From: Jerry Steiger on 16 Mar 2007 15:44
"cadout" <kenda.branch(a)gmail.com> wrote in message
news:1174067089.612348.208180(a)l75g2000hse.googlegroups.com...
> Other than showing that threading is there, what is the purpose of
> cosmetic threads? Is it just what you can use to represent threads
> without actually creating them? I'm attempting to create screws and am
> wondering what the pros and cons are between cosmetic threads and
> creating actual threads in my design.


Actual threads are resource hogs. They are a bit of a pain to build and they
require a fair amount of time to rebuild. It's not a problem when there are
only one or two, but it can become a real drag when you have a lot of them.

Jerry Steiger
Tripod Data Systems
"take the garbage out, dear"


From: Jack on 18 Mar 2007 18:40
cadout wrote:
> Other than showing that threading is there, what is the purpose of
> cosmetic threads? Is it just what you can use to represent threads
> without actually creating them? I'm attempting to create screws and am
> wondering what the pros and cons are between cosmetic threads and
> creating actual threads in my design.
>

I use cosmetic threads only for their contribution to drawing views. Be
careful though...a while back I wasn't paying attention to the options
and had the "remove thread" option button selected. We had the parts
made with SLA and what do you know - the holes for #6 screws came out
..138 dia. instead of .107 dia. - just the way I told it to tell it to do
it.
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