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Author Topic: 3D Class 128 Gloucester Parcels Body - NOW AVAILABLE  (Read 25648 times)

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Online Only Me

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Re: 3D Class 128 Parcels DMU Body
« Reply #45 on: October 15, 2013, 12:39:31 PM »
I've researched this pretty thoroughly now, I believe the roof dome in fact starts just behind the cab door as shown in the plan I have here



This would make sense as then the dome will sit ok. Also notice that the roof has a slight raise on either side of the body too!...

Back to the preverbial drawing board again then!
« Last Edit: October 15, 2013, 01:38:22 PM by Only Me »



Offline EtchedPixels

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Re: 3D Class 128 Parcels DMU Body
« Reply #46 on: October 15, 2013, 02:43:03 PM »
The sketches are not that accurate. The curve starts in the middle of the door.

There's a handy photo of the Heljan one on the Hattons site which shows this clearly

http://www.ehattons.com/48123/Heljan_8903_Class_128_DPU_M55994_in_BR_rail_blue_with_full_yellow_ends_/StockDetail.aspx

and the white on the early livery shows it very well.


If you take the roof profile just before it starts to dip and keep moving it forwards very slightly and rotating it towards the front you'll get the right basic shape but it will stick out beyond the nose. Then trim it flat with the nose and it'll look right (there's a tiny curve on the join between the flat and the dome strictly speaking)

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Re: 3D Class 128 Parcels DMU Body
« Reply #47 on: October 15, 2013, 09:47:33 PM »
Alas I don't have the skills unfortunately to continue with this project as I've now spent two days trying to re do the cab roof but unfortunately can't get it right.

The problem probably is I only have sketchup to use which probably lacks the tools..


Paul.


 :-X
« Last Edit: October 16, 2013, 12:33:32 PM by Only Me »



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Re: 3D Class 128 Parcels DMU Body
« Reply #48 on: October 15, 2013, 09:54:43 PM »
Does this help explain the basic concept (note the profile in this example is different- more rounded and less humpy) but hopefully it helps show how its built

I wouldn't give up. There were head shaped dents in the wall by my desk by the time I figured some domed roofs out !

Alan



(done in chunky form to show the slices better)
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Re: 3D Class 128 Parcels DMU Body
« Reply #49 on: October 16, 2013, 12:16:51 PM »
Many Thanks Alan,  I think we have something now resembling the correct curve.  I know there are still curved gutters to add, but I'm just pleased I've got this far :)





 :dunce: Paul
« Last Edit: October 16, 2013, 01:09:15 PM by Only Me »



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Re: 3D Class 128 Parcels DMU Body
« Reply #50 on: October 16, 2013, 12:50:27 PM »
Hi Paul,

I cannot see the latest image. Can you check the permissions please as I am keen to see how this is progressing.
Well, that's just not good enough. Some fount of all knowledge you are!  :no:  ;)

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Re: 3D Class 128 Parcels DMU Body
« Reply #51 on: October 16, 2013, 01:09:52 PM »
Hi Paul,

I cannot see the latest image. Can you check the permissions please as I am keen to see how this is progressing.

Ah yes... All Fixed now!



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Re: 3D Class 128 Parcels DMU Body
« Reply #52 on: October 16, 2013, 01:30:10 PM »


WOW  :thumbsup: :thumbsup:

Looking superb, me want!! me want!!

Well done

Regards

Neal.

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Re: 3D Class 128 Parcels DMU Body
« Reply #53 on: October 16, 2013, 01:32:29 PM »
Yup, I agree. It is looking really good and I will definitely be up for one when they become available.  :thumbsup:

 :thankyousign:
Well, that's just not good enough. Some fount of all knowledge you are!  :no:  ;)

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Re: 3D Class 128 Parcels DMU Body
« Reply #54 on: October 16, 2013, 03:20:00 PM »
Does Sketchup have any sort of boolean operators?

Certainly in Blender what I would be tempted to do is draw the front and the cab roof dome as two separate pieces and then use a boolean operator to merge the two pieces so that you get the nice continuous curve across the top angles of the cab front.

Actually looking at the real thing again I'm not sure I'm right - the cab front is angled (as you have it), but it might just be that the cab roof dome actually protrudes slightly over the cab front so it gives the illusion that the interface of the two is curved. Not very clear, I know!

Cheers, Mike



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Re: 3D Class 128 Parcels DMU Body
« Reply #55 on: October 16, 2013, 03:45:03 PM »
The dome and sides are merged by the guttering rails which weren't on my last picture, here is a quick mock up without any rounding to show what I mean...



Hope that makes more sense..



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Re: 3D Class 128 Parcels DMU Body
« Reply #56 on: October 16, 2013, 04:14:42 PM »
Next time do a class 120 - its much simpler ;)
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Re: 3D Class 128 Parcels DMU Body
« Reply #57 on: October 16, 2013, 05:03:44 PM »
Next time do a class 120 - its much simpler ;)

May just inspire me to a 2-LAV next ha ha!

By the way is it one mm holes i need for your roof vents Alan?

Cheers Paul



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Re: 3D Class 128 Parcels DMU Body
« Reply #58 on: October 16, 2013, 07:55:02 PM »
128 seems to be torpedo vents so 1.2mm

I think it'll depend upon the material choices. In polished WSF (which will be way cheaper) you'll not reproduce the exhaust pipes or the roof vents but if you stick holes in the roof you can add vents happily.

In FUD which is much pricier and more fragile you'll be able to print the exhaust pipes but they'll break later alas, however if you print the torpedo vents in the FUD case and you cheat and half embed them in the roof (like older plastic models)  you'll get the right basic effect.

So I think it depends on your material choice whether you stick a hole in or a vent.

For holes I'd still use 1mm, 3D printed holes have a habit of being a little off round in WSF so its often better to be a shade under and just flick a drill into them quickly.

Alan
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Re: 3D Class 128 Parcels DMU Body
« Reply #59 on: October 17, 2013, 10:05:17 PM »
Little bit of an update... Lots of smoothing to do to the roof, torpedo vents to add and other bits and pieces..

Not the best pic but you get the idea


« Last Edit: October 17, 2013, 10:46:43 PM by Only Me »



 

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