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Author Topic: CAD are you interested....  (Read 47449 times)

vnkiwi

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Re: CAD are you interested....
« Reply #75 on: October 09, 2012, 07:46:00 pm »

Hi Guy's,
Let us on the forum know how you find 123D cad, if you will please.
I've been hoping to use it in a similar way to you all on here, but this has been intermittent, due to home and work commitments.
I've used Autocad since version 2.8 at work, now using 2013, and revit. Contract draughting since 1967.
I.ve been using 'Freeship' (and delftship) to generate hull shaps from photos, and lines drawings, and will now be importing the 3D-dxf and stl files into 123D to add the rest of the fittings etc. (have used sketchup for a bit, but to limited).
Have been in Vietnam for the past month, hence lack of response sooner.
cheers
vnkiwi
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TomP

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Re: CAD are you interested....
« Reply #76 on: October 09, 2012, 08:28:02 pm »

What will really make things interesting for the modeller is if modellers start to pool their resources and talent. Create a library of 3d models that modellers can either print themselves or have sent to a bureau.
Hi sorry know this is a long way back in the discussion, but www.the-blueprints.com have a good selection of ship drawings for free check it out some interesting subjects on there. Cheers Tom
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Kim

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Re: CAD are you interested....
« Reply #77 on: October 10, 2012, 08:20:33 pm »

Had a quick look at 123d model.

There are some positives -

Draw your hull in 3d then it produces pdf plans to allow bread & butter construction of the hull.

Location & identification marks are automatically produced ...

I had a quick play with one of the library hulls and cut it in 1.5mm Styrene.

Personally if i had drawn the model in 3d I'd prefer to have it manufactured in 3d.

Nice application to have a play with, well thought out and dead easy to use.


Regards,
Kim

Pics bellow -
1. layers loosely placed in position
2. Similar sized CNC machined plug as comparison.
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F4TCT

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Re: CAD are you interested....
« Reply #78 on: October 20, 2012, 06:36:32 pm »

I've been looking at rhino tutorials including a bolt on package called t-splines - http://www.youtube.com/user/tsplines/videos?sort=dd&flow=grid&view=0&page=1

Very interesting indeed.

I've been fiddling about trying to form planks but it simply isnt working.

I'm looking to have my jig water-jetted when i get the funds together and going from there with the project.

Dan
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Kim

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Re: CAD are you interested....
« Reply #79 on: October 22, 2012, 07:25:16 pm »


I've been fiddling about trying to form planks but it simply isnt working.


Dan

What's the problem?
Kim
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F4TCT

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Re: CAD are you interested....
« Reply #80 on: October 23, 2012, 11:22:11 am »

Hi Kim,

The spline things don't look very planky, however I have just now been fiddling about with lofting and will try to form some 3D setions of plank at each notch on the jig and then attempt to loft between them.

I tried this roughly on a fresh drawing and it seemed to work. Stay tuned!

Dan
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grendel

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Re: CAD are you interested....
« Reply #81 on: October 23, 2012, 11:28:14 am »

in microstation I choose a profile then give it a set of points to extrude the profile through, it works most of the time, though when you are bending around curves both ways it does occasionally flip the plank 180 degrees between frames.
Grendel
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F4TCT

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Re: CAD are you interested....
« Reply #82 on: October 23, 2012, 12:24:31 pm »

Well ive just spent the last hour tidying up the 3d frame as i noticed it was every so slightly not sitting right. Should be good to go now so will work on this over the course of the afternoon.

Dan
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grendel

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Re: CAD are you interested....
« Reply #83 on: October 23, 2012, 01:07:17 pm »

I was amazed when using delftship how small an adjustment on a point could make to the fairness of the lines, in places you can move points by the centimeter, but in others you are changing by 1/10mm and making a difference, its a shame the free version doesnt fair the hull automatically, but I suppose that is the one tool that can save hours of work and makes buying the pro version worthwhile.
Grendel
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F4TCT

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Re: CAD are you interested....
« Reply #84 on: October 23, 2012, 03:55:34 pm »

Well interesting hour or so messing with the planking...

Its far from perfect, however it sort of proves it may be a viable way forward..

Firstly, a 3d box was snapped into the corners of the notch and then given a thickness of 2mm



I then used the face to face lofting tool which then connected the box faces up on each notch...



Here shows the majority of the first plank, complete with the slight twisting from vertical at the bow to horizontal at the stern...



The 6 main ribs with notches on, should be angled slightly to accept the plank, however with the face to face loft, the faces are always vertical and thus kicking up errors in the bending of the plank





I have thought of another way of doing this and I will try a bit later. Basically I will create some 2D lines as appose to the 3D boxes and use a 2D loft to link together the lines. Then the plank can be thickened. Im hoping the 2D loft will allow the plank to twist and bend, but being 2D, im not so sure. I may be able to use face to face lofting on the 3D polyline.

More soon!

Dan

P.S, this is first time I have ever lofted anything!
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grendel

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Re: CAD are you interested....
« Reply #85 on: October 23, 2012, 04:14:16 pm »

if you use the centre line of the thickness of the bulkheads can you create a spline that flows through the set of points then get the profile of the plank to extrude along that spline.
alternately can you use the straight line link between bulkheads to approximate the angle of the notched section, then construct your 3d box normal (at 90 deg) to that angle, would this smooth out your plank line.
Grendel
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Kim

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Re: CAD are you interested....
« Reply #86 on: October 23, 2012, 04:55:17 pm »

HI Dan,
Looks like your getting the idea ...
I know i'm repeating myself from another post but maybe this time it will make more sense and you maybe able to apply it to your project.


http://youtu.be/6ZD-As77jhA?hd=1


See how they build from 2 through 2.5d  to 3D

Remember my little story about skeleton, skin then clothes ..
I think your getting there!

Now remeber you are building for CNC (subtractive) which will require 2d  drawings (2.5D at the machine stage) so no need to over engineer ... but good practice to check for fit etc.

Carry on & good luck
Regards,
Kim
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grendel

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Re: CAD are you interested....
« Reply #87 on: October 23, 2012, 05:04:04 pm »

but part of the fun is figuring how to achieve the end result.
Grendel
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F4TCT

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Re: CAD are you interested....
« Reply #88 on: October 24, 2012, 07:31:12 pm »

Had a bit of a break from the coble planking and decided to re-draw (lost the first lot when the laptop went belly up) some plans of my barge - http://danwalker.co.uk/Towing_Barge_html/towingbargepart1.html

I then of course decided to try the fitting of the parts and did a 3D model of it. Got a little bit to finish and work out but heres my work so far...







Dan
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grendel

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Re: CAD are you interested....
« Reply #89 on: October 24, 2012, 07:53:43 pm »

does turbocad allow you to save the 3d model as a rotateable 3d pdf? I know you can do it in autocad and in microstation.
Grendel
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F4TCT

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Re: CAD are you interested....
« Reply #90 on: October 24, 2012, 08:10:37 pm »

Allows .pdf

not sure if it can be rotated or not. I would imagine thats a pdf reader pro feature?
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grendel

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Re: CAD are you interested....
« Reply #91 on: October 24, 2012, 08:15:35 pm »

you have to have later than a certain version, but the 3d file has to be created in CAD, mine you have to set checkbox options to get 3d output
Grendel
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grendel

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Re: CAD are you interested....
« Reply #92 on: October 24, 2012, 08:45:01 pm »

im my cad software (microstation) the option is in the print section when I choose the pdf drivers



the option I recall has to be activated in the plot driver first as I recall (one of the tweaks available when working in microstation, everything is controllable)
I would post the pdf, but this site doesnt seem to have that as an option for file types.
Grendel
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Kim

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Re: CAD are you interested....
« Reply #93 on: October 27, 2012, 10:37:06 pm »

Hi All,
We will be at the Mobile Marine Christmas Cracker again this year.
I have been doing a bit of CAD work for our new 3D Printer. Sneak drawing preview attached
I will have the results at the show.
I hope to see you there.
Regards,
Kim
Details of Show –
http://clydemodelboats.co.uk/
http://mobilemarinemodels.com/acatalog/Calendar.html
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F4TCT

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Re: CAD are you interested....
« Reply #94 on: October 27, 2012, 10:44:48 pm »

Blardy hell, you aint bad at this stuff are you Kim...  %%


nice work!


Dan
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Kim

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Re: CAD are you interested....
« Reply #95 on: October 27, 2012, 11:46:46 pm »

Cheers Fifie

I have turbocad v18.1 platinum at present. This is a cracked copy, naughty i know but...  :police:

Dan

Dan,
I know the software is expensive but we shouldn't use cracked copies .. doesn't help any of us in the long run.
 
That aside,  it would be nice to see this thread go back to 2d cad and questions as lets face it thats what most of us model boat guys would like to figure out first!
Then lets start ramping it up so we all get to 3D.... Yes?
 
Regards,
Kim
 
 
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Subculture

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Re: CAD are you interested....
« Reply #96 on: October 28, 2012, 07:50:30 pm »

There is a very good article on free and low priced CAD and CAD/CAM software in this month edition of Model Engineers Workshop magazine. 3D and 2D packages are covered, and it's well written.
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victorian

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Re: CAD are you interested....
« Reply #97 on: October 29, 2012, 11:01:57 am »

Direct - to - etch.
 
I use Turbocad v.16 and due to it's numerous idiosyncrasies, it's difficult to find an etcher who will work directly with an emailed Turbocad file.
 
I used to have one (PPD Ltd) an excellent company, but they tell me due to wierd Turbocad problems to are no longer accepting the files, asking for .dxf or .dwg instead. Turbocad claims to output these, but they come out far larger than the Turbocad drawings and can no longer be emailed. In addition I don't yet know if they solve the problem and it would be par for the Turbocad course if they didn't. I'll report back on this.
 
Does anyone have a solution to this, like an etcher who can accept Turbocad? I don't really want to change CAD at this late stage!
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Fifie

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Re: CAD are you interested....
« Reply #98 on: October 29, 2012, 11:16:34 am »

Can you send me a sample file
I will have a look at it and see if there is a simple solution
Fifie
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grendel

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Re: CAD are you interested....
« Reply #99 on: October 29, 2012, 02:58:22 pm »

somewhere there should be a template file for the conversion, maybe the units are set to meters rather than mm or cm, or maybe there is a scaling option set in the conversion, time to search through the settings / options.
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