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Continuing on from my sculpting thread here, I've begun assembly and painting of my Rottweiler tank. 

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Started sanding and first coat of primer. Ran out of black primer, so stalled myself out. 
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I'm thinking this might be a practice piece for a ReaperCon entry of the same tank. 

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15 hours ago, Glitterwolf said:

Wonderful vehicle!

Thanks!

 

8 hours ago, Jasper_the_2nd said:

That's awesome!

Hoping to get a 3d printer this year.  Roughly what would that have cost, in plastic, to print?

 

 It's printed in Hatchbox Grey PLA which costs about $22-26 for a Kilogram spool on Amazon (depends on stock levels).

 

The tank itself weighs a little over 200 grams, but in terms of plastic used, it was probably closer to 250 grams, thanks to support material, aborted prints, options not shown here, etc. Essentially, I can print 4 tanks from a single spool.

 

So about $6-7. And about 30 hours total time on the printer for all the parts.

 

There are cheaper filaments available, but I've found I have more print problems with those, which means I'd likely only able to get three tanks from a spool, which means it would still work out to about $6-7.

 

Started my paint job.  I'm using Siri's tutorial on rust. I'll then use the salt chipping method over the rusted areas, and spray my base coat.  So it's going to not only look weird for a bit here, most of what I'm doing right now will be covered up.IMG_20180211_163240.thumb.jpg.bbe9245638d89f16d6884594fe320204.jpg

 

 

 

 

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So far it looks like a glorious mess:

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Overall, the application of Siri's rust method looks horrible on this model (it looks far better on the Iron Golem and Skid Loader you can see in the background).  The good news is that there are some localized spots that look really good - so that's where the salt will go for the next step.

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Frustrated. And as a result, I've put this aside for a bit, even though I know I should just soldier on. 

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The problem is that I didn't get the results I expected from the salt chipping method. 
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It worked, but I miscalculated.  Scale wise, it's probably "accurate".  But visually, you can barely tell. 

When I did this on my Tycho AFV, I felt I put too much salt down in too few areas of concentration and I didn't really like the results there.  So this time, I sprinkled it more lightly, but it turned out to be too lightly. 

The other mistake I made here is that I didn't really think about where I wanted the rust to appear.  I concentrated mostly on what I would consider "wear areas" without really thinking about it.  I did this because I was thinking it would save me some effort if I didn't paint the rust undercoat on the whole model. 

What I learned.  
- paint the whole darn thing like a rust bucket. 
- use more salt.  

I'm glad I decided up front that this was going to be a practice model for an RCon entry. 

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I have to ask: why are you doing rust on the tank to begin with? From my limited military experience, if you let your vehicle get rusty you are in a world of excrement with your C.O..

AND would a Grav Tank be made out of metal? I would bet a SciFi tank would be armored in some ultra ceramic material.

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10 minutes ago, malefactus said:

I have to ask: why are you doing rust on the tank to begin with? From my limited military experience, if you let your vehicle get rusty you are in a world of excrement with your C.O..

AND would a Grav Tank be made out of metal? I would bet a SciFi tank would be armored in some ultra ceramic material.

Rust happens.  Especially under field conditions.  I'm a Navy Veteran, and one of the things I learned is that ships are basically in the process of being repainted almost all the time. But even so, there are areas that can get corroded and rusty pretty quickly.  I imagined that tanks in the field are similar. And what little I could find on the subject showed the same:

http://www.misterjustin.com/2012/05/inspiration-weathering-tanks.html

 

As for why a grav tank might get rusty?  You're right that they're probably made of some fancy ultralight ultra hard composite material, but how do you convey that visually to the average viewer AND make it look used?   Rust and corrosion are the simplest ways to say "this thing is not a shiny museum piece, but a tank in the field of battle." 

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