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Miniatures Adventure => The Second World War => Topic started by: Ballardian on September 29, 2017, 05:27:06 PM

Title: 3D printed Tanks
Post by: Ballardian on September 29, 2017, 05:27:06 PM

 I came across this guy's site whilst seaching for 3D model files (3dwargaming.com (http://3dwargaming.com) - it's another indication of how the technology is likely to become more & more important in the not too distant future.
  The two WWII tank files he's currently selling aren't bad at all - the Tiger I certainly has a few issues (early turret on late hull & running gear & the drive sprocket comes out too far), but the 43 model T34 is pretty good, with no glaring faults.
 There are a number of Laffers who're currently experimenting with 3D printing (Matakishi for one) - so how lolng before WG etc start selling us  digital files (& would that be a good thing)?

 
               
 
Title: Re: 3D printed Tanks
Post by: carlos marighela on September 30, 2017, 12:08:11 AM
I am currently printing stuff sent over the internet from Netherlands to Australia....

3D printed clogs? Windmills? Recreational drugs? The mind boggles.

The future may just be around the corner but the best use I've seen of the technology seems to be quickly turning out masters and proofs of concept by traditional manufacturers using high res machines. Rubicon are masters of this.

Those models look nice. They seem to have overcome two of the biggest turnoffs, the inability of cheap machines to deal with curved surfaces minus irritating steps and ridges and the grainy effect.
Title: Re: 3D printed Tanks
Post by: Elbows on September 30, 2017, 01:57:49 AM
We've discussed this in a couple thread...it basically boils down to:

1) Yes, this will continue to impact the industry in a huge way.
2) Don't plan on cheap, crisp printing in the avergae house-hold for 28mm or smaller miniatures too soon.
Title: Re: 3D printed Tanks
Post by: Elbows on September 30, 2017, 03:44:35 AM
And those things you stated last are what 90% of people buying simple 3D home printers can expect.  The majority of people will not be plunking down for $1000-1500+ machines anytime soon, let alone the really stellar $10K models.
Title: Re: 3D printed Tanks
Post by: Wyrmalla on September 30, 2017, 06:11:29 AM
Having just spent a day adding detail to a 3D printed E-100 I can say that its not there for every company. I've seen high end 3D printing (hell look up the 3D printed chocolate palaces), but the print times wind up costing the consumer an arm and a leg.

Besides home printer the way to go may be renting printer time from a commercial retailer. I can't speak for the rest of the world, but in the United States they have shops where the walls are just stacked 3D printers which you can rent time on them (presumably also paying for the materials - extra charges incurred for the better filament).

Ah, from personal experience with products from home users and small companies - keep some glass paper handy for the immediate future.

Watching Tested.com and their podcast kind of spoils me expectations for quality though (coincidentally said podcast I'm listening to has started talking about 3D printers. Weird). With how much they talk about them, the techniques and drop in price, seeing crap prints still is a bit disheartening.
Title: Re: 3D printed Tanks
Post by: Westfalia Chris on September 30, 2017, 07:01:51 PM
3d printing is going to be an important aspect of the modelling part of the hobby, so I don't see any reason to act or get agitated pre-emptively.

That said, the concept proposed by Scurv earlier of a kit line supplemented by 3d files to manufacture otherwise commercially unfeasible projects seems to be one of the most sensible business models I've come across for 3d printing. A gaming acquaintance of mine got one, and while he seems inappropriately intent on printing models that suffer terribly from situations due to their shape, I see so much potential in that and am seriously considering getting a printer myself.
Title: Re: 3D printed Tanks
Post by: CompanyB on October 04, 2017, 03:47:34 AM
Another aspect of this that will change is the creation of the actual files.  I'm getting a new laptop from Wacom for work, and it has a 3D scanner and camera built in.  Now, the scanner is not super high resolution, but it's good enough to capture a very good rendition of a co-workers face that I can then bring into Zbrush and rework onto a close approximation.  It's possible for me to do a walk around of a person and have a mesh I can then apply to a pre-existing 3D human model.

So if you want toy soldiers, you can now start with the faces of your family.  This isn't the future...I can do this right now.  Another fact is that most 3D software now comes with pre-built models you can modify.  In Zbrush, I can sculpt my own human from scratch, or I can construct a character from an infinite amount of parts I have on hand in the software.  Hands, noses, eyes, limbs, monster limbs, basically clothes.  I give companies like Rubicon a little grain of salt, as there are thousands of digital libraries of pre-existing models you can start from.  It doesn't take much effort for a good artist to put something together.  Just do a Pinterest search for Zbrush characters.  each one is printable in any size.  Also with Zbrush, I can now paint just about any model to a photo realistic standard.  So printing full color characters in high res is only a few months away.

We were literally able to take 3D scans of sea shells the other day with just a camera, import them into Zbrush, readjust the sculpt and have photorealistic versions of the shells in an game app as well as ready for printing in a few hours,

In five years, 3D worlds and models will also no longer use polygons.  You will literally be able to just use a regular camera, take several dozen photos, and have your software interpolate a full 3D model using point cloud technology. We do this on a weekly basis, creating a printable and viewable 3D models of our building or places around town from a 100+ photos.
Title: Re: 3D printed Tanks
Post by: Redmist1122 on October 06, 2017, 06:05:26 AM
Printing a 3D model does bring hope to those vehicles and/or parts needed in which nobody makes in resin or in a plastic kit.  I use 1:48 scale model vehicles/armor in my WWII gaming.  The scale is very limited in option for those "other" vehicles, i.e. American M5 Stuart, M24 Chaffee, or even the Soviet BT-7, to name a few. I've done some pretty good good conversions with existing models.  I just keep crossing my fingers for someone to make those few models/vehicles in 1:48 scale.

I have bought a two 3D printed models through a chap on TMP.  They were ok, but required a lot of work to get the surface smooth and trying to replace the detail lost in the wheels, tracks and hatches of the sort.  I think I'm a pretty good modeller, so I can hide a lot of defects from the printing and re-create most of the hatches, but definitely not the wheel or tracks.

Its good to know, there is some "high end" products out there.  Hope to find someone who doesn't charge an arm and a leg.

Title: Re: 3D printed Tanks
Post by: Paratrooper 42 on October 19, 2017, 09:32:10 AM
Hi, new to the forum and just looking to get back into WW2.

Just seen this thread and was wondering are those pictures of the 28mm tanks?

Until now I've discounted 3D printed vehicles as my experience of 3D printing so far is that the finish isn't very good unless you're prepared to spend lots of cash/time on the printer and the printing and I could probably buy all the vehicles I will ever need for less than the cost of a decent printer.
Title: Re: 3D printed Tanks
Post by: Ballardian on October 19, 2017, 05:32:43 PM

 As Scurv says, the art to getting good results from hobby printers seems to be in the way the models are optimised, we've all seen a lot of mediocre results displaying the typical scan line issue - that this chap's neatly avoided the problem is part of what caught my attention.
 He's running a KS for his files, & there are a good number of WWII vehicles there (.kickstarter.com/projects/847988960/3d-printable-tanks-historical-and-sci-fi?ref=328103&token=bffe1d6c (http://.kickstarter.com/projects/847988960/3d-printable-tanks-historical-and-sci-fi?ref=328103&token=bffe1d6c)) BUT I would hope that their accuracy leans more to the T34 than his Tiger I (which, as I mentioned, has a number of inaccuracies.
Title: Re: 3D printed Tanks
Post by: Paratrooper 42 on October 20, 2017, 03:50:24 AM
they are 1/56 scale in the pics.

The reason they look so good compared to most 3d printed stuff is these models are optimized for printing. They have been cut up and orientated on the print bed in order to get the very best results from the tech.

The difference this step makes is staggering. Usually I cut up and orientate everything and get results that are as good as the above. Today I used a robot builder that you cant cut up the print with. With the exact same print settings I use to get amazing looking stuff, I could only deliver a very mediocre result due to the amount of supports needed and the poor orientation of most of the models parts.

This was on a $1400 printer too. Imagine what a low end one struggles with when the print is not cut up well!



You've just confirmed my original thoughts that 3D printing isn't good/cheap/accessible enough to consider as a viable alternative to proper models.

I doubt many wargamers would want to shell out $1400 on a printer to get mediocre results when they could buy lots of commercially available models with the same money.  Plus there would be the time needed to learn all the slicing techniques and fiddle with the printer to get it working.  Personally I'd rather spend that time improving my painting and modelling skills.

Title: Re: 3D printed Tanks
Post by: chamberlain on October 20, 2017, 06:47:24 PM

You've just confirmed my original thoughts that 3D printing isn't good/cheap/accessible enough to consider as a viable alternative to proper models.

I doubt many wargamers would want to shell out $1400 on a printer to get mediocre results when they could buy lots of commercially available models with the same money.  Plus there would be the time needed to learn all the slicing techniques and fiddle with the printer to get it working.  Personally I'd rather spend that time improving my painting and modelling skills.

If 3D printing interests someone *as it's own hobby* then it combines excellently with miniature wargaming.  If it's something you have to do to get to the hobby that you'd actually enjoy, then it can definitely fall short.  If the time spent making the printer work perfectly, learning the software and learning how cutting and positioning objects changes the final outcome is something that is enjoyable hobby time, then of course that being a barrier to other people can be inadvertently discounted.

People have a tendency to assume their own preferences and experiences are more universal than they are and that if 3d printers are accessible, easy to use and affordable in their experience, then it must be that way for most or even everyone else.

The time constraints on most miniature wargamers that I know (from their jobs, family commitments, etc.,) leave only so much time for hobbying.  And I think most would actually rather spend it working on miniatures or playing wargames then learning how to pull up a design in some software and make changes to optimize it.  Or diagnosing a filament leak or adjusting settings to stop stringing on a particular piece.  Or even simple things like cleaning out a resin tank on an SLA printer.

I love 3d printers.  I think they can do great things.  I enjoyed building one from parts.  I've done tech support for 3d printing for educational settings.  Of all my gaming buddies, I think one... maybe two would actually enjoy the process of owing and operating the printer themselves while the vast majority of people i've met would be much happier not spending time on that.

In a given group of gamers, there doesn't need to be universal appeal for the entire group to benefit.  It doesn't need to be universally accessible, affordable, etc.,.
Title: Re: 3D printed Tanks
Post by: chamberlain on October 20, 2017, 08:50:09 PM
what I said got taken completely out of context there as well. The original question is why does this tank look so nice. The answer was orientation. A printer costing a gazillion dollars will still do an average looking print if every single factor of the print is done without any effort put in to orientate the model. Orientation is part of the 3d printing process.

Absolutely.

I actually think it's fair though, for people to talk themselves out of 3d printing.  It really isn't for everyone and especially not for someone who doesn't want to bother thinking about orienting parts.  it's a basic part of the process.

Quote
Oh the complex 'slicing techniques' essentially are 1. draw a line 2. Press the split solid button 3. flat face to print bed. 4. Super nice looking print. Not rocket science really.

I actually think that simple process described that way is another good test whether 3d printing is for a given person.  I actually send people who express interest to me a video about some 3d printing thing.  Even something really simple:

https://www.youtube.com/watch?v=XJi4_ScDLtE

There are many people who after watching that will be like "no thanks."

My opinion that 3d printing is not suitable for 90%+ of the people out there is probably a result of doing tech support and seeing what happens when just anyone and everyone can have access to a given printer.  I've come to realizing that even in populations where you'd expect a higher affinity for technical things like in geeky circles, programmers, gamers, crafters/hobbyists, and even graphic designers and people who do CAD for a living, there actually really isn't all that of an increase in the number of people who will actually learn what needs to be learned and do what needs to be done.

I think we've discussed this in the past, but I think a useful analogue are paper printers.  The vast majority of the people out there have no capability or interest in doing even simple things like removing a jammed piece of paper.  In an office, they call IT.  They could just open the panel, and pull a release/cartridge/whatever, and slide the paper right out.  And the first time their home printers make streaks or spotting, they don't bother cleaning the print head or changing the cartridge (many cartridges have the print head right on them), they just buy a new printer.

Now give them access to a 3d printer.

The other side of this is that there *are* people for whom 3d printing will be enjoyable, accessible, affordable and for whom the results will be excellent.  And people can spend less time with certain approaches.
Title: Re: 3D printed Tanks
Post by: Cubs on October 20, 2017, 09:25:34 PM
I'm going to get a printer one day, I just know I am. I haven't got one so far because I'm almost totally technologically incompetent and for the sort of quality I'd want to keep, the initial costs would be just way too much for my meagre budget. But I can see that printers have already changed the hobby hugely for a lot of people and technology like this doesn't just fade away; it progresses year on year getting better and more affordable and looking at these sorts of results is even more encouraging. I remember Going to a place down the road about 10-15 years ago, who were doing 3d printing for industrial plastic prototypes (vacuum cleaner parts, kettle bodies, etc..) using massive machines the size of an old photo booth. Seeing how far things have progressed in such a short space of time is a bit scary.
Title: Re: 3D printed Tanks
Post by: chamberlain on October 20, 2017, 09:32:33 PM
Something to remember:  There may already be someone with a great printer near you who will print for a very low cost.

Here's a local guy reviewing some purchasable 3d files after he sent them to a local printing hub.

https://www.youtube.com/watch?v=EBoNV9E-wLs

My take on the industry in general is that there is that miniature wargaming is a totally perfect place to apply 3d printing technology.  And 3d printing is going to have a growing impact going forward.

And that's without mass adoption of 3d printing.  It only takes a small minority of a gaming community adopting 3d printing to change things massively.  Laser cutters have already totally changed accessories and now there are all sorts of regional token and terrain providers and loads of people who just operate on a break even basis selling to friends and local event organizers.

Removing the appearance of layers through creative orientation at the design stage is actually going to be increasingly important.  In my iterations of some 10mm infantry I'm going multi part with as large of parts as I can get away with while still not having the layer lines being in any direction your brain expects them to be.    I'm trying to make it work with PETG (so the tiny figures will be really strong) and have had to adjust various settings related to travel speeds and retraction (including setting the printer to have different travel speeds for different parts of the print), but I'm getting there.
Title: Re: 3D printed Tanks
Post by: chamberlain on October 21, 2017, 01:38:00 AM
On the .1mm layer height:

Another problem people have with 3d printing not looking good enough to their eyes is that layer lines show up in photographs way more than in real life.  And on top of that, many filiments are actually more translucent than many people would think and a little bit of see through makes every layer show up way more than it will once it's primed.  I find this especially true of many PETG (even if I love it for it's other characteristics).

Many printers use a pretty standard hot end (often an E3D or a clone) and you can change the nozzle and go smaller.  Print takes longer, but I'm printing really small things.  I've also had to tweak my retraction and temperature.  Otherwise it would clog.  I find PETG (being a higher temp and a stickier filament) has better layer adhesion so I can go for even smaller layers than the normal nozzle diameter divided by 4.  Print speed is down at 20mm/s though (considering many people print at 60+ at .1mm and their stuff still takes longer than they'd like) and I think I also had to manually mess with steps per mm on the step motor settings to get it absolutely perfect.  Although I can just print at normal speed at .1 even with the smaller nozzle.

Changing back and forth between nozzles is basically the same process and clearing a clog.  No problem for some and a world ending problem for others.  o_o

Even a normal .4mm nozzle can be tuned to print at thinner than a human hair.  Most people tend to do .1mm as it means they don't have to adjust things to combat possible problems.  Actually as odd as it sounds, many E3D V6 based printers print best with no modification at .09.  A couple prints of some calibration towers with different layer heights and temperatures and anyone can zero in on the best resolution possible with a given printer and filament combo.  The mechanics of your Z axis actually have optimal layer heights as a natural result of the way they move.

On the "five years off" - they were right 8 years ago.  It's been a good three years now that proven reprap printer designs have been taken by various manufacturers and mass produced.  Most sub $1000 printers are based on some sort of open source base, be they actual Prusa i3 printers, clones, or disguised as branded printers.

I think what people mean when they express things like that (and that learning 3d modeling is hard) is that they want 3d prints that look as good to them as miniatures they can buy.  No child doing 3d design on a tablet using some very simple software in preschool is going to accomplish that.  And neither will the typical end user of a 3d printer.

Same with the layers.  Even commercial SLA printers that get down to ridiculous resolutions are often still tumble polished with tiny ceramic beads to remove the last hints of layer lines.  Insane people who love poison also like to chemical polish ABS with vapourized acetone (I consider this a horrible idea).  Then there's the simple process of using a sandable primer, glazing putties and other proven scale model techniques to allow a surface to be sanded smooth after each layer step is filled.

Many people won't acknowledge that 3d printing is truly "there" until they get the same results as a current commercial miniature like a plastic tank kit without having to do any design work or polishing/finishing.  "There" to them is a push of the button instant perfect miniature with no layers.

It's not realistic, but it is what they want.  They can get miniatures right now without doing any 3d design, the miniatures have no layers and have set their expectations.

3d printing is not for everyone. What gets to me though is the huge amount of misinformation out there about it.

I think lots of people who would like to give it a go are put off by incorrect statements usually made by people with at best a passing knowledge of 3d printing if any at all.

I have the opposite concern.  I think it'd be really easy to spend $500 on something and a year later have it sit there having only printed a handful of bad prints.  I think it's far more likely that people are sold on something that's really not for them in a highly commercialized hobby than they are put off something that would be wonderful for them.

My view is probably from being frustrated watching educational budgets/tax payer money go towards 3d printers but then they sit there so heavily under utilized.  It's so easy for people to be sold on the idea of 3d printers and then the reality hits and most people have no use for them.  Even most teachers that are enthusiastic about them struggle to integrate them into their ciriculum in a meaningful way.  I know so many teachers who basically use them as trinket printers where the student walks away having learned nothing but with a trinket in their hand they'll very shortly forget about or lose.  At least with miniature wargaming the utility is far more direct and obvious.

Quote
If you are a member of a 20 strong gaming club then a club purchase of a machine is frankly a no brainer.

And the odds are the person driving the group purchase (or taking contributions to pay for a printer with the understanding that the contributor will get something they want printed) will be the kind of person that can make a 3d printing an enjoyable part of the hobby.

When 3d printers do become prevalent enough that everyone knows a fellow gamer who has one, then we'll be at a real interesting inflection point.  And I mean knows them to the point that they can shoot off a instant message or an email and at the next club night they hand over cash for something they want.  And everyone knows someone that can do that for them.  Decentralized local production is going to be awesome for the hobby.
Title: Re: 3D printed Tanks
Post by: chamberlain on October 21, 2017, 03:06:15 AM
oh yes the 3d printer snake oil salesmen are also a problem. Look at the thread on that robot builder that is a POS for a good example of promising the world and delivering bupkis.

For sure.  I don't know how many times a school has had some 3d printer sales guy come by and play a video about printing prosthetic hands for children missing limbs and they all lose their minds and have to have one in their class room yesterday.  And six months later it's been used to print like 2 my little pony figures or something.

The best place for 3d files for miniature gamers is to be part of a little community where people are remixing things from thingiverse.  Like the dungeon tile printing community where they are taking free files and making changes to make them work for the D&D game and then sharing the new file as well (or sometimes selling stuff made from scratch for a very reasonable price).

wilmanric's cauldrons (original designs, not remixes)
(http://i.imgur.com/cnUScdz.jpg)

Epic Dungeon Tile's... dungeon tiles
(http://www.meeplemad.com/img/4.jpg)

Matikish's thread is full of great examples of 3d printing for gaming and a good place to see pictures of painted vs unpainted for those who want to see how much of a difference it can make:
http://leadadventureforum.com/index.php?topic=98364.0

(http://www.matakishi.net/uploads/4/0/8/7/40876893/chests-001_orig.jpg)

(https://i.imgur.com/6IwgQil.jpg)