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All this CAD malarky
http://www.tacticalwargames.net/taccmd/viewtopic.php?f=7&t=15911		 Page 1 of 3
Author:  The_Real_Chris [ Thu Jun 18, 2009 12:57 am ]
Post subject:  All this CAD malarky
How much does it cost? Well other than time :)
So the print, the bronze, the mould, each pour?

Signed, Curious of West Bengal
Author:  Evil and Chaos [ Thu Jun 18, 2009 1:03 am ]
Post subject:  All this CAD malarky
Print: ~£80 for a tank.
Bronze: ~£25 per cubic centimetre
Mould: ~£90
Per pour: I haven't gotten that far yet. :))


You might have to have several prints done before you're happy with the model going to Bronze.
Author:  evilhomer [ Thu Jun 18, 2009 8:10 am ]
Post subject:  All this CAD malarky
Is that for casting in resin or metal? Will yours be resin?
Author:  Warmaster Nice [ Thu Jun 18, 2009 10:13 am ]
Post subject:  All this CAD malarky
Bronze is for making metal moulds. Resin moulds are cheaper and might hold some detail better but it is much more fragile and you have the usual problems with air bubbles.
Author:  netepic [ Thu Jun 18, 2009 10:39 am ]
Post subject:  All this CAD malarky
Quote: (Evil and Chaos @ 18 Jun. 2009, 01:03 )

Print: ~£80 for a tank.
Bronze: ~£25 per cubic centimetre
Mould: ~£90
Per pour: I haven't gotten that far yet. :))


You might have to have several prints done before you're happy with the model going to Bronze.

Don't forget the cost of hiring a CAD man :D.
Author:  Zog [ Thu Jun 18, 2009 11:58 am ]
Post subject:  All this CAD malarky
What is the best way to get into the CAD programs?
IE which one should you start with (pref free!)
Author:  Apocolocyntosis [ Thu Jun 18, 2009 12:14 pm ]
Post subject:  All this CAD malarky
So you make a bronze version of the tank (or whatever is being made) and then use that to produce a metal mould? How is the bronze produced then?

Also, wow, didn't realise the whole process was so expensive.
Author:  Warmaster Nice [ Thu Jun 18, 2009 12:24 pm ]
Post subject:  All this CAD malarky
Otterman can correct me on that but the way I understood it is that the bronze is made the same way as bronze sculptures. Basically you cover the model in a clay material and then pour in the bronze which burns away the material from the master model. In order to release the bronze you then destroy the mould. If there's an error you need a new master model.
Author:  Nik [ Thu Jun 18, 2009 12:28 pm ]
Post subject:  All this CAD malarky
Quote: (Zog @ 18 Jun. 2009, 11:58 )

What is the best way to get into the CAD programs?
IE which one should you start with (pref free!)

Otter and me are using Moment of Inspiration 3D http://moi3d.com/ - unfortunately it is not free but you have a 30 day trial period. It was the first modeling tool I ever really used - the results can be seen in my Nashorn thread ...

MoI3D is - in my opinion - very easy to learn and use. It is a pure modeler and has therefore a limited set of functionality - but for this case it's more than sufficient.

I had a look at some free tools - e.g. Blender http://www.blender.org/ - but at least for me the learning curve is too high (and I do not want to invest my rather limited free time in learning how to use the damn tool, instead I want to create something).
Author:  Nik [ Thu Jun 18, 2009 12:28 pm ]
Post subject:  All this CAD malarky
Quote: (Warmaster Nice @ 18 Jun. 2009, 12:24 )

Otterman can correct me on that but the way I understood it is that the bronze is made the same way as bronze sculptures. Basically you cover the model in a clay material and then pour in the bronze which burns away the material from the master model. In order to release the bronze you then destroy the mould. If there's an error you need a new master model.

That's correct AFAIK
Author:  Nik [ Thu Jun 18, 2009 12:30 pm ]
Post subject:  All this CAD malarky
Quote: (Evil and Chaos @ 18 Jun. 2009, 01:03 )

Print: ~£80 for a tank.

I think this strongly depends on the size of the model and the company - I paid around 50$ for my Nashorn - including three chassis as well as lot's of bit's and pieces ...
Author:  Evil and Chaos [ Thu Jun 18, 2009 12:33 pm ]
Post subject:  All this CAD malarky
My tank is a lot bigger. :)
Author:  evilhomer [ Thu Jun 18, 2009 2:04 pm ]
Post subject:  All this CAD malarky
So judging by a heavy tank costing ~£80, I suppose a super-heavy may be on the order of £100-£110?

I seems alot are starting an interest in this. I recently acquired rhino ;)
Author:  Nik [ Thu Jun 18, 2009 2:09 pm ]
Post subject:  All this CAD malarky
Quote: (evilhomer @ 18 Jun. 2009, 14:04 )

So judging by a heavy tank costing ~£80, I suppose a super-heavy may be on the order of £100-£110?

I seems alot are starting an interest in this. I recently acquired rhino ;)

Not necessarily - printing my Necron Warbarque would have cost around 40$ using printapart - the model was around 4cm x 2cm x 2.5cm
Author:  Otterman [ Thu Jun 18, 2009 2:25 pm ]
Post subject:  All this CAD malarky
PrintAPart has excellent resolution and good pricing, but its output is extremely fragile. I have broken several barrels while attempting simple silicon molds.

The rule of thumb for them is $10 per cubic centimeter, but it becomes cheaper at larger volumes, such as Nik's warbarque or my Vaygr battlecruiser.

Todd Boyce / Ninjamagic charges about $30 per cubic centimeter for bronze work.
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