Re: [gentoo-user] best CAD app for industrial machining/molding?

2021-04-21 Thread caveman رجل الكهف
thoughts on onshape.com?

rgrds,
cm.

‐‐‐ Original Message ‐‐‐
On Monday, 19 April 2021 03:40, Sid Spry  wrote:

> On Sun, Apr 18, 2021, at 9:47 PM, caveman رجل الكهف 穴居人 wrote:
>
> > hi.
> > i want to design complex shapes, and then
> > send them to some manufacturers. so my
> > drawings need to be very accurate, and
> > compatible with the manufacturers.
> > plus, it would be nice to have the ability
> > of being able to test how structurally
> > strong my design is. e.g. how well it
> > supports loads, and where are the pressured
> > points, etc.
> > thoughts on what to use? should i use
> > autocad? else? how should i think? any
> > tips?
>
> As the other poster has suggested, FreeCAD cantechnically
> do all of these things. But the biggest issue with it is that its constraint
> engine is not as advanced (by way of heuristics) as that of Autodesk
> or Solidworks. Practically what this means is if you change a base feature
> FreeCAD will give you gibberish instead of what might make sense in
> context.
>
> If you are a hobbyist, and are not very RMS-inclined, then just using
> a subscription to Fusion 360 will be fine. It is what a lot of hobbyists
> use. In fact, even if I were RMS-inclined, I'd probably use Fusion 360
> for prototyping and then put the design into FreeCAD.
>
> Fusion 360 will do stress analysis for free, I think. The other CFD
> analyses are paid, and can run upwards of $13k/yr, so in case you need
> them it would be worth it to use FreeCAD.





[gentoo-user] best CAD app for industrial machining/molding?

2021-04-19 Thread caveman رجل الكهف
hi.

i want to design complex shapes, and then
send them to some manufacturers.  so my
drawings need to be very accurate, and
compatible with the manufacturers.

plus, it would be nice to have the ability
of being able to test how structurally
strong my design is.  e.g. how well it
supports loads, and where are the pressured
points, etc.

a piece of extra information in case it helps:
my 1st project has to do with car parts.

thoughts on what to use?  should i use
autocad? else?  how should i think?  any
tips?

notes:

- i'm on linux.
- i'm not a very RMS-moral person.

rgrds,
cm.



Re: [gentoo-user] \ \ \ 2021 / / /

2020-12-26 Thread caveman رجل الكهف
‐‐‐ Original Message ‐‐‐
On Friday, December 25, 2020 4:32 PM, Neil Bothwick  wrote:

> On Fri, 25 Dec 2020 15:07:59 +, caveman رجل الكهف wrote:
>
> > hi. i just want to help a bit by sharing a
> > thought that i think is useful to the civilisation
> > of life forms in general:
> >
> > - new year celebrations are wasteful in
> >   several ways (e.g.  waste on needless
> >   purchases [aka gifts], useless fireworks,
> >   useless trees with socks on them, etc).
> >
> > - the vacation is nice to allow potential good
> >   use of it.  but even this is usually abused
> >   by most people as they end up just wasting
> >   it alongside their money for purely doing
> >   silly things such as purposeless tourism.
> >
>
> Dear Ebenezer,
>
> Some of us would welcome the opportunity to waste time with their
> families over Christmas and the New Year, instead of having to spend it
> isolating at home following a positive COVID-19 test.
>
> Don't underestimate the therapeutic value of doing nothing with the people
> that are important to you.

i'm not against that.  in fact, this goes in the
list of the productive things.  remember, i said
"not limited to"?  i literally stated that my list
of productive things is not exhaustive.

spending time with family is productive, since
it's an opportunity to inspect the situation of
family members to help them become even better
people.  this happens implicitly even though
dad/mom doesn't say "hey kids time for annual
performance inspection!".

it's part of us which we inherited from evolution
that actually helps maximise our survival.  there
is a reason why we've evolved to like it.

but, worthy to note, not everything we like is
good.  e.g. there are bugs in evolution.  e.g.
some people enjoy drugs up to a point they become
addicts.  this is not inline with survival
maximisation, so we can say this is a
vulnerability in evolution that drug dealers try
to exploit.

rgrds,
ebonzer.