TheRailwire

General Discussion => N and Z Scales => Topic started by: wm3798 on March 31, 2010, 10:11:20 PM

Title: Another thought about rapid prototyping...
Post by: wm3798 on March 31, 2010, 10:11:20 PM
Suppose someone wanted to make a large bank of steel frame windows, for say, a roundhouse...

(http://www.wmrywesternlines.net/gallery/albums/userpics/10001/Chief_Architect_10_08a__Roundhouse_Windows.jpg)

Now, it's easy enough to get a good representation of the window panes by simply printing the image on an acetate transparency.  But there are heavier frames between the individual sashes...  The thought of using strip styrene to scratch it all out is rather daunting (in addition to the two large banks of windows that make up the outside walls, there's a big window at the back of each of the 20 stalls).

(http://www.moosicmountainwild.com/railroad/Hag-11-1-crop-adj-inside-le.jpg)

Is it possible to use a rapid prototyping printer to run the larger mulls between the frames, and "print" that material directly onto the acetate material?

Or am I cuckoo?

Lee
Title: Re: Another thought about rapid prototyping...
Post by: Sokramiketes on March 31, 2010, 11:12:08 PM
You want the Archer decal process like their rivet decals... not rapid prototype.
Title: Re: Another thought about rapid prototyping...
Post by: daniel_leavitt2000 on March 31, 2010, 11:14:08 PM
I'm thinking .005" brass on each side of printed acetate. That would give the right dimensions and interior and exterior detail.
Title: Re: Another thought about rapid prototyping...
Post by: bbussey on March 31, 2010, 11:22:42 PM
I would go the etched brass route also.
Title: Re: Another thought about rapid prototyping...
Post by: up1950s on March 31, 2010, 11:39:32 PM
Somethin' tells me Lee is sittin' on the bank waiting for the float to go south . Hope the fishin' is fruitful cause the idea of laminated roundhouse panes sounds good . Maybe generic factory over-sized  sashes in plastic or etch that we could cut to fit custom window frames .   
Title: Re: Another thought about rapid prototyping...
Post by: sizemore on April 01, 2010, 12:17:21 AM
I would go the etched brass route also.

Thirds.

The S.
Title: Re: Another thought about rapid prototyping...
Post by: wm3798 on April 01, 2010, 05:49:45 AM
So, I should email the file to Chris, is that what you're saying?

Lee
Title: Re: Another thought about rapid prototyping...
Post by: AlkemScaleModels on April 01, 2010, 09:39:48 AM
So, I should email the file to Chris, is that what you're saying?

Lee

Lee,

If you'd like, send me the file and I'll see what the laser does with them. Can you send me an Illustrator or Corel draw are my preferred formats?
I'll probably have to redo the drawing anyway to format it for the laser.

BCK

 
Title: Re: Another thought about rapid prototyping...
Post by: wm3798 on April 01, 2010, 09:54:43 AM
I can send you a .dwg or .dxf file.  I can also send you a .pdf that's 100% N scale (and also fits the openings I've built)

Are you thinking styrene?  A guy on the A-board suggested vinyl, such as one would put on a real estate sign etc.

Lee
Title: Re: Another thought about rapid prototyping...
Post by: sizemore on April 01, 2010, 10:26:30 AM
So, I should email the file to Chris, is that what you're saying?

Lee

If it were me, I'd make it a three layer peice. First layer is a pane layer, second being main beams, third being the outer sill (more like a ring). But to answer your question. Yes!

 ;D
The S.
Title: Re: Another thought about rapid prototyping...
Post by: wm3798 on April 01, 2010, 10:41:01 AM
I don't think it's necessary to do the "pane layer" in brass.  the printed lines on the acetate look pretty good to my eye. It's the full sashes and frames that I'm after.

Good idea about the trim line around the perimeter of the whole mess, too...

Lee
Title: Re: Another thought about rapid prototyping...
Post by: wazzou on April 01, 2010, 10:54:16 AM
Probably laserboard.
Title: Re: Another thought about rapid prototyping...
Post by: Iain on April 01, 2010, 10:57:39 AM
(http://www.moosicmountainwild.com/railroad/Hag-11-1-crop-adj-inside-le.jpg)


You gonna build all that other stuff in there?  If you're going to make windows that big, you'll need to do an interior.
Title: Re: Another thought about rapid prototyping...
Post by: sizemore on April 01, 2010, 11:40:00 AM
I don't think it's necessary to do the "pane layer" in brass.  the printed lines on the acetate look pretty good to my eye. It's the full sashes and frames that I'm after.

Good idea about the trim line around the perimeter of the whole mess, too...

Lee

I like that idea for things like houses, but to me larger windows need something more substantial. Just my Canadien .02, since you've got me thinking about making that monster out of all those round-house kits I've got stored up.

The S.
Title: Re: Another thought about rapid prototyping...
Post by: DKS on April 01, 2010, 11:51:43 AM
I've seen some pretty fine laser work lately. How about lasering some thin self-adhesive material to laminate onto the clear acetate?

Maybe take the concept a little further... make the walls out of thin Plexi. Apply the windows, then lasered brick laminate.
Title: Re: Another thought about rapid prototyping...
Post by: Chris333 on April 01, 2010, 12:18:09 PM
I was gonna say laserboard as well. It is very thin and if you put some 3M peel-n-stick on the back of it before cutting you could sandwich the "glass".

I'm at work now so I haven't opened the drawings yet...
Title: Re: Another thought about rapid prototyping...
Post by: wm3798 on April 01, 2010, 02:56:31 PM
The thin plexi walls presents an interesting idea... it would required laminated detail on the interior as well...  And yes, at some point I will be adding some interior details like the elevated platforms, and some sort of representation of inspection pits.  I need to put some thought into that.  Unlike the original roundhouse, the tracks for this will be fixed to the roadbed, so I'll be able to fool with that stuff down the line somewhat.

As it is, the budget dictates using materials on hand, so it is what it is for now...

Lee