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Author Topic: 3D printed chassis experiment  (Read 10726 times)

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Offline EtchedPixels

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Re: 3D printed chassis experiment
« Reply #30 on: March 30, 2012, 07:03:48 PM »
Ok .. from the next batch of NEM sockets I think the answer on this is

- you can print a proper(ish) NEM socket  in FUD
- you can print a socket which is good enough for "add glue, stuff in coupler" to get the right location etc using WSF (ie the cheap plastic)

More interesting things once I've had time to assemble some of them this weekend.

Alan
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Offline Ben A

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Re: 3D printed chassis experiment
« Reply #31 on: March 31, 2012, 01:44:56 AM »

Hi Alan,

Your idea for a 4mm sized Rapido coupling made me chuckle...

Thanks for your conclusions on the printed NEM components.  It sounds like the prototyped items are at least strong enough, which was my main query.

As for the Dapol couplers, I've had around 30 now and am progressively fitting them to key items of stock for our club layout.   So far no problems with springs at all; but then maybe I am just lucky.

cheers

Ben A.



Offline EtchedPixels

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Re: 3D printed chassis experiment
« Reply #32 on: March 31, 2012, 04:08:17 PM »
Thanks for your conclusions on the printed NEM components.  It sounds like the prototyped items are at least strong enough, which was my main query.

WSF is strong. You can drill it, saw it, file it and even tap it. FUD behaves more like resin - it'll crack under strain rather than bend. Shouldn't be a problem for a coupler socket but for the arm I think you'd need to be very careful how your curves were done to avoid weak spots.
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Offline EtchedPixels

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Re: 3D printed chassis experiment
« Reply #33 on: April 24, 2012, 08:22:29 PM »
More on the 3D front - this time folks using an iphone to generate 3D models under fairly controlled conditions, but its a neat hack and another step towards "see it, snap it, print it" 3D objects.

http://www.trimensional.com/

With a bit more print resolution you'll soon be able to put your friends on the platform !
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Offline Stew2000

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Re: 3D printed chassis experiment
« Reply #34 on: April 24, 2012, 08:24:55 PM »
I use 123D Catch to help me model cars. useful. but not really worthy of direct 3D printing.

Offline EtchedPixels

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Re: 3D printed chassis experiment
« Reply #35 on: May 06, 2012, 06:39:39 PM »
Sunny weather and time so lots of stuff going through the paintshot

The Gresley non vestibules are now part done, one interior, some roofs and a lot of teaking left to do.

I did however manage to catch a nice photo of a pair  in service, although the layout scene in question is a bit modern image for it !

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Re: 3D printed chassis experiment
« Reply #36 on: May 06, 2012, 06:53:43 PM »
And without the sun

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Offline EtchedPixels

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Re: 3D printed chassis experiment
« Reply #37 on: May 16, 2012, 06:23:33 PM »
Next box of goodies from the UPS man has arrived.

I've finally got the Gresley bogie mounts right so those can now go into proper production as kits. I've also succesfully printed fully working NEM pockets in FUD. The Thompson suburban third looks hopeful but need to check the etches and the fit is nice.

Other oddments include more buffers, pullman lamps with a proper hollow between the lamp and shade, TPO lamps and most of the bits for a Metropolitan railway rigid 8.

Some other minor insanities too - a test T scale clayhood, and some OO gauge angle-poise lamps - can't quite do those in N with current processes alas !

I did the sides fo the Metropolitan coach flat very carefully and they went and printed it vertically instead. As it happens they seem to have produced a beautiful looking wood grain surface as a result  8-)

Alan
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First picture
« Reply #38 on: May 17, 2012, 06:54:22 PM »
These are actually non N-Gauge bits. A tester for a 1:450 scale Clayhood. It uses T scale wheels. Need to flesh out the underframe etc now I know it works. Also slightly tweak the bogie mounts.

On the other side is a OO scale angle poise lamp. The technology isn't quite good enough to do it in N yet.

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Re: 3D printed chassis experiment
« Reply #39 on: May 17, 2012, 06:57:51 PM »
Yes. N Gauge is in the void between detailed and basic. only so much you can get out of these printers.

Offline kirky

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Re: 3D printed chassis experiment
« Reply #40 on: May 17, 2012, 11:48:35 PM »
EP,  that is vey impressive.
Can you give us some accurate dimensions. You'll need calipers I guess - like how thick the lamp arms are, the diameter of the base, overall height etc etc?
Cheers
Kirky
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Offline EtchedPixels

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Re: 3D printed chassis experiment
« Reply #41 on: May 18, 2012, 12:16:20 PM »
The lamp arms are 0.5mm thick. The base is 4mm diameter.
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Offline kirky

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Re: 3D printed chassis experiment
« Reply #42 on: May 18, 2012, 04:32:23 PM »
That's amazing, half a mill on those arms, at an angle with the lamp head on too. Must be strong stuff?

Cheers
Kirky
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Re: 3D printed chassis experiment
« Reply #43 on: May 18, 2012, 05:56:04 PM »
Its not very strong, but it was well packed.
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Offline intraclast

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Re: First picture
« Reply #44 on: May 19, 2012, 08:50:55 AM »
On the other side is a OO scale angle poise lamp. The technology isn't quite good enough to do it in N yet.

That lamp is impressive! Do you think it will ever be possible to do that kind of stuff in N? Would it require a change of materials to something a bit stronger?

 

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