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3D PRINTING
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 Posted: Sat Sep 10th, 2011 02:59 pm
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sledhead
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Is there any way to know for sure the orientation before it's printed? I know with the 3d printers I've used it prints exactly how it's laid out in the solid modeling program. I think the resolution is higher from top to bottom (z-axis?) than it is front to back or side to side.



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 Posted: Sat Sep 10th, 2011 03:11 pm
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Daniel Osvaldo Caso
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Surte  there is. Actualy all printers can do that. The problem is Shapeways have a poilicy of getting the maximum money from each print and use a program that just looks for as much models to be printed at once. It is certainly not a technical problem.

Many companies will print your designs just as you want, but you'll notice the difference also in the price.

My choice for Shapeways had to do with the fact they are offering a sales mechanism so every model will be printed when ordered. That means there's no need of ordering a stock of each product. I've found another (Amewrican) company that offerts the same mechanism with the adventage that theuy also do CNC milling and laser cutting. The combination is ideal, but they can't 3D print walls of less than 1mm nor very small details. So that wasn't an option for me.

I think Shapeways is blinded by the snell grow of their sales but they are also going to lose a lot of clients due to the orientation issue.

I'm sure many modellers won't care paying a little more but getting good prints.

Anyway I'm sure anpother company, more modellers friendly will come up soon. And if the also offer CNC milling and laser cutrting services they will pass by far Shapeways  very soon.

For me Shapeways is convenient just for some specific personal prints, but not for commercializing. I don't know how many of my models would be sold, but they are loosing all my mopdels plus all the ones I could sale. Not so clever in my opinion.

 

                    Daniel



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 Posted: Tue Jun 19th, 2012 10:27 pm
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ZIAdesigns
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hello, My name is Mark. I'm new to the group. I live in Denver and model HO and HOn30. I got into this part of it as I saw the 3D printing portion of this and saw the results. I'll be honest they came out not too bad. A bit about me. First I'm a product designer by schooling. Graduated in 2006. I also use Shapeways, and so far the results have been what I expected from the technology. If you see on my username ZIAdesigns, which is what is on shapeways I offer models for sale in HOn30. I know of some of the limitations of this technology but also realize the huge potential it has..and what it was originally intended for. Don't be so quick to give up on what can be done with 3D printing at this time. I have already done a few for myself and a few have been bought, with very good results. I hope to continue with more models using rapid prototyping (3D printing) and know it can be a huge benefit to the hobby as a whole.



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 Posted: Mon Sep 10th, 2012 08:20 pm
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elminero67
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Ive been casually following along this thread and a few others on 3d printing. This is one of the bright spots for the future of modelling, and your experimenting with this new medium will benefit other modellers, even knuckledraggers like myself.



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 Posted: Tue Sep 11th, 2012 03:23 am
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sledhead
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Yeah, it's not simply "print and paint" yet. Even if you don't do the design work yourself, there is lots of prep work. The print has to be carefully cleaned, primed, sanded, "flash" trimmed off, primed again and painted. Depending on the print orientation, some details need to be treated with thin CA to add strength and rigidity. Otherwise those stirrups would break if you looked at them. Even after careful cleaning, I still had to glue about a dozen back on. If the thin detail extends vertically from the build plane, they tend to be very, very fragile. And on these I also added separate wire grabs on the taconite extensions.

But there is quite simply no other economical way for a guy like me to build in a reasonable time a fleet of a type of car that is unlikely to be ever commercially produced.



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 Posted: Tue Sep 11th, 2012 03:25 am
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sledhead
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The rivets showed up great on this particular build. On others, well, let's just say they'll be the recipients of some heavy weathering.

BTW, the "gumball" beacons on my C628's are also printed.

The thing I found when researching this form of model-making is I found lots of pictures of prints, and few of finished models. It's all well and good to design and print something, but being able to finish it off into an acceptable model is what will really drive interest in this as a viable, affordable model-making technique, especially when companies operate like shapeways and you have to be able to play the hand you are dealt.

Last edited on Tue Sep 11th, 2012 03:31 am by sledhead



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 Posted: Thu Sep 13th, 2012 04:43 pm
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sledhead
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One thing to note as well. The UV cured prints that arrive with lots of fuzz and separation lines or "layering" seem far more fragile. I had one arrived damaged, I sent photos and they reprinted it at no cost to me. Replacement arrived with very, very little of that layering, looks almost perfect (for a print), and is much more durable. Supposedly the same materiel, night and day in appearance and durability. This makes me think if Shapeways spends a bit more time to orientate models right, or address whatever other variables seem to cause such a difference in build quality, they'll probably save money with fewer damaged prints. If they show up broken, they likely have a lot of breakage during production as well. That's all lost revenue.



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 Posted: Wed Sep 19th, 2012 08:02 am
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Paglesham
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Or, you could just make em??
The old dinosaur is back. Been busy with slot car patterns for ages. Made by hand with tools.
Good to see Herb and Woodie are still here.
This 3D printing is getting everywhere.
Good job my pension's due in 2 years!

Martin the model maker.



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 Posted: Wed Sep 26th, 2012 10:16 am
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W C Greene
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Martin-check out GREAT NEWS in this forum...

Woodie



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 Posted: Wed Sep 26th, 2012 08:30 pm
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sledhead
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Paglesham wrote: Or, you could just make em??
The old dinosaur is back. Been busy with slot car patterns for ages. Made by hand with tools.
Good to see Herb and Woodie are still here.
This 3D printing is getting everywhere.
Good job my pension's due in 2 years!

Martin the model maker.

 I did make 'em. I researched the prototype, then spent about 20 hrs building the solid model. about 1 hr finishing it.  The thing is, instead of spending 21 hrs scratch building and have one car, i can now spend 21 hrs and in the end have 21 cars. All of my own creation. Only so much time in the day man. I suppose I could pay someone else to make me custom models, but hey, I got kids to feed.

You should try your hand at solid modeling. A professional model or tool maker should have no problem mastering the software, it uses much of the same terminology and concepts developed by toolmakers.



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