Re: [CAD_CAM_EDM_DRO] Re: CAD experiment entry

Hi Brian,

I think that this is why it is good to have a discussion here. There are
all sorts of CAD/CAM users here so hopefully we will get some really good
and honest reviews of various option.
I've only progressed to creating 2d dxf files and feeding them through
sheetcam to produce the separate processes.

That's how I'd do the T-nuts. A separate layer for;
1. milling the height
2. drilling the hole
3. milling the relief
4. milling the outside rectangle

Cheers,

Peter


Brian Worth wrote:

> Hi all,
>
>
> I feel I have to comment here on parametrics. I tried Alibre in the early
> days,
> and it was wonderful for hobby sized stuff, but I do injection mould
> design -
> lots of variable blended surfaces etc, and this totally broke the
> parametrics in
> Alibre. It has probably been improved since, but this put me against the
> whole
> parametric approach. I bought VX in the end - also a parametric modeler -
> big
> mistake. I spent more time keeping track of what was going on in the
> history
> tree than working.You put way too much reliance on the history tree - if
> this
> breaks and you are 2 weeks into a project you are deep in the proverbial.
> I have
> tried other packages too, solidworks being one, but just not cost
> effective, at
> least here where I live. Rhino seems to me to be the best all round
> modeler, but
> even it has its moments. I love the freedom to work, and not worry about
> the
> parametrics. And the editing tools are so strong that changes are
> generally
> quick and easy.
>
> It is a pity that one usually only finds shortcomings only after one has
> bought
> a package. My approach now to hotshot sales guys is "Well it looks good,
> let me
> work with it for 6 months. If it works for me I'll buy it!" So far, no
> takers!
> But in the end, everyones requirements are different, and the best is to
> ask
> around and get opinions from real time users. All the sales guys do is
> dazzle
> you with with the strengths and hide all the weaknesses.
>
> Regards, Brian
>
>
>
> ________________________________
> From: timgoldstein <timg@...>
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Sent: Wed, 15 December, 2010 2:57:36
> Subject: [CAD_CAM_EDM_DRO] Re: CAD experiment entry
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Peter Reilley" <micrio@...>
> wrote:
>>
>> That is very interesting. I watched the video of Alibre's parametric
>> feature.
>>Do you know
>> if Alibre can be driven externally from a spread sheet like MS Excel as
>> you
>>describe?
>>
>>
>> Thanks,
>> Pete.
>
> Pete,
>
> Not that I am aware of. I think the spreadsheet driven approach is one of
> the
> things that you get from the high $$ packages and is part of why they cost
> more.
> I may be wrong, but I never saw the feature in Alibre when I was using it
> and I
> have the top Expert license.
>
> Parametric is not an Alibre thing, but a normal thing with the 3D solids
> CAD
> programs like SolidWorks, Inventor, Pro-E, etc. It refers to the concept
> that
> you have a build tree of the steps you took to create the model and that
> you can
> go back and make changes and the model updates all following steps. In my
> experience, Alibre does not have as solid a build tree as SolidWorks or
> Inventor. No real experience with other one, but my guess is again higher
> $$ =
> more robust. In Alibre I have many times changed a parameter toward the
> base of
> the build tree and destroyed the model. Far less of an issue with higher
> end
> products. Also, building with primatives instead of complex profiles and
> cuts
> leads to a more robust build tree and easier changes with less rework.
>
> Tim Goldstein
> A2Z Corp
> A2Z CNC division
> 3955 S Mariposa St
> Englewood CO 80110
> 720 833-9300
> Toll Free 877 754-7465
>
> www.A2ZCorp.us/store
> USA made accessories for desktop mills & lathes.
> Specialized tools for the jewelry industry.
>
>
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
> timg@...
> Moderator: pentam@... indigo_red@... davemucha@...
> [Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it
> if you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
> sister site to the CCED group, as many of the same members are there, for
> OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
> Yahoo! Groups Links
>
>
>
>

-------------------------------------------------
http://www.homanndesigns.com