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MRH Media 2,999 posts MRH MRH Media 2,999 posts
MRH

014-p129.jpg  Click to read this in landscape orientation ?Click to read this in portrait orientation ?

 

 

 

 

 

 

Read this issue!


 

 

 

 

 

 

Please post any comments or questions you have here.
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DKRickman Prolific poster 3,069 posts
DKRickman

Interesting idea

I had never thought of 3D printing a mold box, but it makes a lot of sense.  I also like the idea of using a gloss coat to cover the minor surface imperfections.  Now I'm wondering if the same would work on a 3D printed part directly, and give a reasonable surface quality.

Thanks for a great article!  Very inspiring.

Ken Rickman

Danville & Western HO modeler and web historian

http://southern-railway.railfan.net/dw/
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engineer Frequent poster 711 posts
engineer

Surface quality

The quality of the surface depends mainly on

- the material used

- the process used

- the orientation of the part in the printer

Horizontal planes are usually printed best, it's a good idea to orient the object accordingly or to split it in parts so that the most important surfaces can be printed exactly horizontally.

I'm quite happy with imaterialize.com: http://i.materialise.com/shop/designer/3ddecodetails

 

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Somewhere Southwest at MRH: http://model-railroad-hobbyist.com/node/21520
Modern monopole billboard in MRH: https://forum.mrhmag.com/post/modern-monopole-billboard-for-your-layout-13129796

Prototype Pics: https://somewhere-southwest.de/index.php/Prototype
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Jean New member 9 posts
Jean

3D Modelling

This is it, WE need more from this modelling technology. More articles, more drawings, more how to do, the limits are endless as we can create our own models and don,t have to wait for manufacturers or containers from China. And we can bring out exotic models nobody wants to do. And remember, the world was build by cottage industries.
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JC ROONEY New member 2 posts
JC ROONEY

3D Modeling

Thanks for opening this subject, yes it needs more exposure and discussion. I have designed a couple simple parts in S scale (bigfourroad on Shapeways) and notice that there is a lot of innovation going on in New Zealand, again in S scale. I have used a slightly different protocol than Earl for making designs "watertight" but have not yet tried the innovative mold box approach. In all other respects I agree with his conclusions about software and surface quality. I think his use of 3D for a signal bridge may be a good one and would like to hear more about that. Due to lower density and lots of air you could probably afford to print and use them directly.
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Benny MRH Author 7,128 posts
Benny

...

I just don't understand why THIS GUY hasn't got article space yet.

http://model-railroad-hobbyist.com/node/11204

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Benny's Index or Somewhere Chasing Rabbits
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