Thinking about my Caestus project...

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Thinking about my Caestus project...

Postby Numbskull » Tue Dec 17, 2019 8:48 am

Hey everyone, looking for some advice

Earlier this year I got a 3D printed Caestus assault ram from a friend (I loved the model and was bummed it was dropped awhile back). I thought it would be an actual resin model/recast, but I wasn't bothered by the fact it was printed.

Over the course of the year I've tried my best to get it into a paintable state. The print was pretty good but it needed a good amount of sanding and filling and so on. No matter how much I worked it never looked good when I applied some primer, which is funny to me since I'm a fitting and turning student who had to hand polish metal plates to a mirror-like reflection for 3 months with nothing but emery paper.

And now I'm at the point where I'm too frustrated with how slowly I'm getting progress done on this model. I love the model and the silhouette it forms, I just can't get any further with it.

So seeing that I am struggling to make progress on the print, my question to myself and to whoever reads this, should I maybe sell/give away the project to someone else and call it a day for this adventure? I tried looking for someone to help finish cleaning the model but I haven't had luck.

Maybe it's a sign?
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Re: Thinking about my Caestus project...

Postby geekgrrrl » Tue Dec 17, 2019 11:47 am

Do you know what plastic it is made out of? 3D printers often make use of ABS, which can be a mission to paint.

If it IS ABS I can relate - I've done some heatforming using ABS sheets and I've often found it tricky to get them to look good afterwards. I really have to roughen up the surface with sandpaper, and that auto-body primers seem to work best. Don't know if that'll be useful info on a detail model, but for terrain it seems to do the trick fairly well. Hope it helps!
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Re: Thinking about my Caestus project...

Postby Numbskull » Tue Dec 17, 2019 12:13 pm

Yeah, it's ABS. The problem with sanding it is there are a lot of thin areas and some area with a decent amount of detail. I have probably sanded off at least 20 rivets accidentally so far :( And I'm kinda scared about potentially losing more detail with something like the Rustoleum primers (I noticed they tend to flood an area very easily, which makes me worry about vents and panels).

At this point I've tried "slurry" (ABS and acetone filler goop) and wood putty (as suggested online) but they haven't really helped at all. Funnily enough I discovered a use for my excess greenstuff as a gap filler which works much better than it should.

Then again, maybe this just isn't an area I have enough experience in, or I'm just doing something very wrong. Thank you for the suggestion though!
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Re: Thinking about my Caestus project...

Postby geekgrrrl » Tue Dec 17, 2019 1:17 pm

I watched a build report by OnTableTop (The old Beasts of War guys) last night where they construct three Star Wars tables, and one of the tables' terrain is almost 50% 3d printed. Long shot, but might be worth emailing and asking them for advice... dunno, I have nothing else of use to add. :lol:

Here's the link to the build

https://www.youtube.com/watch?v=JTQ3DdukJSA

EDIT:

Just out of interest, what brands of primer have you tried? I'm not a fan of GW or Army Painter for anything except hard styrene, and use Tamiya for my metals and resins. If you have some test pieces you could experiment on it might be worth trying.
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Re: Thinking about my Caestus project...

Postby Numbskull » Tue Dec 17, 2019 3:29 pm

I saw that video! It's brilliant how good it all looks! Makes me think about starting a Legio-NO! I must resist the urge!

But I think that's a good idea! Or maybe even find a 3D printing forum or group that specialises in this sorta thing. And I've tried Citadel Chaos Black and Army Painter black. I like the GW stuff since my tanks are all tan (and I hated painting it all on by hand) and my flyers tend to be black. I moved away from Army Painter stuff since I wasn't happy with the general finish of the paint. I had a can and gave it a try.

I used to work in a hardware store and knew the paint specialists kinda well. The rustoleums we stocked (and I used) were better for larger projects like metal bodywork and panels. I remember the paint being a bit thicker than model primer, and I tried priming a Deathwatch shoulder and it clogged most of the inscriptions

You can actually see the lines still on the wings and hull. Wet sanding won't help much with it. And though it feels smooth after sanding, its only after priming that it becomes noticeable
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Re: Thinking about my Caestus project...

Postby geekgrrrl » Tue Dec 17, 2019 3:34 pm

Good luck hey. Would appreciate if you do come up with any decent fixes that you share the knowledge - I love ABS for how easily one can heatform things, but hell does it suck otherwise. :lol:
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Re: Thinking about my Caestus project...

Postby Numbskull » Tue Dec 17, 2019 8:00 pm

I'll definitely let you know if I discover any secrets, though I am rather doubtful at this point :crazy:
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