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davela
scholastic sledgehammer
*****

Reged: 12/19/06

Loc: Pasadena, CA, USA
Looking for a CAD program
      #5430311 - 09/20/12 03:39 AM

Can anyone recommend a free or very low cost CAD program capable of making decent 2-D engineering drawings? I am interested in designing some telescope elements such as machined lens cells for refractors, focusers, and similar items. I have PC's and Mac's available.

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Escher
Pooh-Bah
*****

Reged: 08/30/07

Loc: Fenton, MI
Re: Looking for a CAD program new [Re: davela]
      #5430430 - 09/20/12 07:19 AM

We use Solidedge here at work for simple stuff. Its free and has full 2D capability.


http://www.plm.automation.siemens.com/en_us/products/velocity/solidedge/free2d/


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John Jarosz
Astro Gearhead
*****

Reged: 04/25/04

Loc: Fairfax, Iowa
Re: Looking for a CAD program new [Re: Escher]
      #5430447 - 09/20/12 07:41 AM

I use Draftsight, it will work on Mac or Windows and it's free.

Draftsight

John


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cloudmagnet
sage


Reged: 12/04/08

Loc: Georgetown, Texas
Re: Looking for a CAD program new [Re: John Jarosz]
      #5430469 - 09/20/12 08:10 AM

I'll second Draftsight - it's a dead ringer for AutoCad as far as 2D is concerned - files are compatible too!

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dugun
newbie


Reged: 11/01/06

Loc: Istanbul-Turkey
Re: Looking for a CAD program new [Re: davela]
      #5431236 - 09/20/12 04:05 PM

Sketchup - easy to learn also.

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BoriSpider
Carpal Tunnel


Reged: 08/10/04

Loc: S.W.FLA
Re: Looking for a CAD program new [Re: dugun]
      #5432492 - 09/21/12 11:07 AM

There is also '123D' by AutoDesk.
Also there is 'OpenScad' at openscad.org.


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dobby
newbie


Reged: 05/22/09

Loc: London, UK
Re: Looking for a CAD program new [Re: BoriSpider]
      #5432537 - 09/21/12 11:37 AM

I used LibreCAD (free) on Windows and Linux for rebuilding my 16" Dobsonian.
I never printed out any drawings, but tried out a lot of possibilities and pulled off dimensions for parts.
It was invaluable for
  • Tailgate and wiffletree
  • Altitude bearings
  • Rocker sides
  • Truss tube lengths

Nick


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CosmicDave
member
***

Reged: 11/13/08

Loc: Northern Plains of USA
Re: Looking for a CAD program new [Re: dobby]
      #5433241 - 09/21/12 06:28 PM

+1 for Draftsight. Good file compatibility and intuitive commands.

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allardster
sage


Reged: 07/01/11

Loc: Toronto, Ontario, Canada
Re: Looking for a CAD program new [Re: CosmicDave]
      #5433624 - 09/21/12 11:10 PM

+1 for sketchup. I picked it up in a few evenings without previous 2d or 3d experience. Just go through a bunch of video tutorials that are online for it and try things out.

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JWW
Pooh-Bah
*****

Reged: 12/12/05

Loc: Arizona or Mexico hard to tell
Re: Looking for a CAD program new [Re: allardster]
      #5433740 - 09/22/12 12:59 AM

This was done in Sketchup.

http://www.youtube.com/watch?v=RTzChXJip2U&feature=channel&list=UL

http://www.youtube.com/watch?v=yO_r9-yHgFA&feature=channel&list=UL

http://www.youtube.com/watch?v=Xy0yvHblTyA&feature=channel&list=UL

-JWW:


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John Carruthers
Skiprat
*****

Reged: 02/02/07

Loc: Kent, UK
Re: Looking for a CAD program new [Re: davela]
      #5433833 - 09/22/12 03:20 AM

Alibre free is superb, you may have to register for a key.

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brave_ulysses
super member


Reged: 04/19/09

Loc: far outside the wire
Re: Looking for a CAD program new [Re: John Carruthers]
      #5434489 - 09/22/12 01:39 PM

might have a look here:

http://sourceforge.net/projects/free-cad/


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Chrispy
super member


Reged: 12/22/06

Loc: Kyneton, Vic, Australia
Re: Looking for a CAD program new [Re: brave_ulysses]
      #5434985 - 09/22/12 07:42 PM

Another vote for Sketchup.

http://www.sketchup.com/download/gsu.html

Chris


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JWW
Pooh-Bah
*****

Reged: 12/12/05

Loc: Arizona or Mexico hard to tell
Re: Looking for a CAD program new [Re: Chrispy]
      #5435257 - 09/22/12 11:25 PM

http://www.youtube.com/watch?v=LKjiCVtRLvk

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scopemankit
sage


Reged: 01/27/09

Loc: south africa
Re: Looking for a CAD program new [Re: JWW]
      #5449640 - 10/01/12 05:56 AM

Google Sketchup! Brilliant!!

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Rick Huber
sage
*****

Reged: 01/03/04

Loc: South of Cincy Ohio
Re: Looking for a CAD program new [Re: scopemankit]
      #5449763 - 10/01/12 08:19 AM

DoubleCad XT - Great CAD program and is free - Fully compatible with ACad

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davela
scholastic sledgehammer
*****

Reged: 12/19/06

Loc: Pasadena, CA, USA
Re: Looking for a CAD program new [Re: Rick Huber]
      #5473635 - 10/16/12 05:14 PM

OK thanks a million to all of you for the insights. I'll start looking into all of these.

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BoriSpider
Carpal Tunnel


Reged: 08/10/04

Loc: S.W.FLA
Re: Looking for a CAD program new [Re: davela]
      #6078406 - 09/13/13 09:31 AM

So instead of making a new thread I'm posting in this one.

So there is a new CAD software coming out on 9/16/13.
It's free and even exports .STL's .
It's called DesignSpark Mechanical . It looks promising. Here is an article about it
at 3ders.org.


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BoriSpider
Carpal Tunnel


Reged: 08/10/04

Loc: S.W.FLA
Re: Looking for a CAD program new [Re: BoriSpider]
      #6078442 - 09/13/13 09:57 AM

And I found a video of it on YouTube.

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BoriSpider
Carpal Tunnel


Reged: 08/10/04

Loc: S.W.FLA
Re: Looking for a CAD program new [Re: BoriSpider]
      #6087826 - 09/18/13 11:42 AM

So DesignSpark Mechanical is now available for free d/l.
I thought about trying it out but you need to register w/
the website to d/l it, phone # and all.
I decided not to get it cause it looks like a glorified store
placed on your desktop wrapped in a free CAD program. It does, however,
import/export a wide range of useful file formats.


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BoriSpider
Carpal Tunnel


Reged: 08/10/04

Loc: S.W.FLA
Re: Looking for a CAD program new [Re: BoriSpider]
      #6090090 - 09/19/13 02:36 PM

Well I couldn't help my self. I d/l'ed the above ^^ program ^^.
Looks great. I just installed it(used fake info for registration.
Don't need to buy stuff from them.) and looked around.
I can post pics if I get around to modeling something.


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BoriSpider
Carpal Tunnel


Reged: 08/10/04

Loc: S.W.FLA
Re: Looking for a CAD program new [Re: BoriSpider]
      #6134848 - 10/13/13 11:51 AM

So I finally got around to messing with the tutorials in
DesignSpark Mechanical. Here is a pic a cube I made via the tut's .
So, yeah, I'm liking this CAD program. So far easy to learn
and I have only exp. in OpenScad which is very different.


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jhayes_tucson
professor emeritus
*****

Reged: 08/26/12

Loc: Bend, OR
Re: Looking for a CAD program new [Re: davela]
      #6134901 - 10/13/13 12:17 PM

If you have any educational connections, AutoCad will give you any full version that you want. These include full 2D and 3D capabilities. Printing with the educational versions is a bit more limited than with the commercial versions but not by much. Solidworks is my favorite for 3D (very pricey) but I really like AutoCad for 2D and you can't beat free for a price!
John


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Westseen
member


Reged: 10/12/13

Loc: MN
Re: Looking for a CAD program new [Re: jhayes_tucson]
      #6136025 - 10/13/13 10:48 PM

+another on sketchup
The learning curve on this program is very short/fast and the operations are very intuitive.


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