I've been fiddling with the plans of a Portuguese mow locomotive for quite some time. Recently I got some plans for it so I decided to get started with the project. I decided to post in the Finescale Railroad Forums because I want this to be as accurate as possible and maybe I can get some help from you guys.
I'm doing this in Sketchup and then I will use the CnC to make some masters in blue foam, next I'll do some silicone molds and resin parts to work with and make the final masters. Well, that's the plan anyway.
This is the picture of the subject:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.div2psp.net%2Fimages%2FDresine%2F34596386_a.jpg&hash=6d52857a0abf12eeda1c9bf9d465ae8ab2c19806)
And some Sketchup preliminary work:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.div2psp.net%2Fimages%2FDresine%2FDresine_1.jpg&hash=21448cfc048e4fbd2a1f7da7d45e1f97c018824a)
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.div2psp.net%2Fimages%2FDresine%2FDresine_2.jpg&hash=c77f2a46a819c5255c8a858b1c8ec1bfc7a6db07)
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.div2psp.net%2Fimages%2FDresine%2FDresine_3.jpg&hash=088b83d3dbc456fd22e96ddd576c96d56d5332d4)
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.div2psp.net%2Fimages%2FDresine%2FDresine_4.jpg&hash=edd07a4d740260213db6d06548e31c15673237bd)
I still have to find the prototype to take some pictures of the details in order to continue.
I really admire you guys who are so proficient with 3D drafting.....
Nelson,
as you intend to built in H0 as accurate as possible, consider for the walls brass or thin down the material in the area around the large windows.
Another possiblity is casting the walls including the windows with frames in a clear styrene or resin as Lima did with the german ET08 series.
What sort of power unit you are planning ?
I fully agree with Ken, especially with the plans for my next project taking shape.
success and I look forward to see this evolve.
Jacq
Thanks for the input Jacq, I know brass would be the obvious choice for this one, unfortunately I don't have the technology for this available and outsourcing would be way to expensive. So I was checking commercial plastic injected models and tried to use the same thickness they use (from 0,5mm to 1mm) At this point this is the first attempt so I might make the walls thinner. I also have an approach ready for the window glasses that I will try later on.
As for power unit I went with Bullant Power Bogie from Australian Hollywood Foundry, made the order today.
Interesting project Nelson. What guage was the RR this ran on?
Thanks Chuck.
It's the Iberian gauge, 1,668m (The international gauge is 1,435).
The Iberian gauge is only used in Portugal and Spain ans is slightly larger than the rest of Europe standard.
Hi there guys, well the blue foam plan went away, there's not enough quality, I might use the method for the roof since it's a complex shape. Angular shapes are difficult to do using this method. Here id one of the blue foam experiments:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.div2psp.net%2Fimages%2FDresine%2F26FEV2011%2Fdresine_fev_1.jpg&hash=7b215672ba4a03bf54931663e3005000863eff16)
So, with blue foam out of the way I tried my hand at styrene, I used 0,75 mm (030") thick plain styrene and this was how the parts came for the first version:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.div2psp.net%2Fimages%2FDresine%2F26FEV2011%2Fdresine_fev_2.jpg&hash=c6a44c27befceec717657d42789bc7848b516ee5)
And the first test build:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.div2psp.net%2Fimages%2FDresine%2F26FEV2011%2Fdresine_fev_3.jpg&hash=218a7364a1fe8ff506452d0f47b387f00bce8c7a)
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.div2psp.net%2Fimages%2FDresine%2F26FEV2011%2Fdresine_fev_4.jpg&hash=9705c27856c5335335e85ae3515cd2cffd704438)
Following Jacq's advice I made the walls thiner and at the same time got placement for the glasses which will be machined in clear styrene next week, this is version two of the walls:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.div2psp.net%2Fimages%2FDresine%2F26FEV2011%2Fdresine_fev_5.jpg&hash=338e03bd92377ed1a5cb54d849860512f294e793)
According to Hollywood Foundry my motors are still 4 weeks away so I'll try to move on with the rest.
Styrene seems to be working well......!
I like the rounded corners of the inner window frames. Nice attention to detail!
A very precise assembly, Nelson. The dresine looks nice.
Looks good so far!
Very nice styrene work for the sides Nelson.
For my bridge kit master parts I have had many complex and precise parts cut with a laser. Some were cut from a sign plastic, and I have had VectorCut Dave cut eyebar parts for me out of styrene. The laser will leave a slightly textured edge that is easy to clean up if needed. You can design the parts using layers for the steps such as for your windows. The laser does a great job with arcs and circles. Try it sometime, I enjoy having the parts delivered ready to use without fussing over mistakes.
John
A very clever solution to achieve a good thickness and seats for the windows. This is benefiting inside and outside.
Jacq
The power train arrived from Australia, I've been making some progress with the rest of the project but haven't taken any pictures yet. I recently made a visit to a a Portuguese railway facility and took a lot of pictures and dimensions for this project so I might have some more progress real soon.
Although not my craftsmanship the power unit looks wonderful, great work from the guy at Hollywood Foundry:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.div2psp.net%2Fimages%2FDresine%2Fdre_27032011_1.jpg&hash=3d45ea50b1fcdd2c9b4b74a969c7481d33641617)
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.div2psp.net%2Fimages%2FDresine%2Fdre_27032011_2.jpg&hash=736d71e8c6cbd24f396b471c70735b68b59e6957)
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.div2psp.net%2Fimages%2FDresine%2Fdre_27032011_3.jpg&hash=03c5d7ed32bbf1443d5755e9512dd0cca06d23ad)
How do you intend to hide the electrical pickups?
No rubber band drive?
Since the prototype has some tanks and hardware on each side I'm hoping the electrical pickups will be "lost" among the hardware!
Tiny. Quite a challenge. -- Russ
Well, it's been a long time since I last posted in here but the project is not dead. I know the links for the images in the rest of the thread are dead since I moved to a different server.
Thats why I decided to post new pics. Since the last post I made I decided to thin down the sides of the Dresine, they are now 0,75mm and on the glasses it's around 0,25mm to be closer to the original thickness. These are the last pics of the sides (some are turned back to show the low relief for the glasses):
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.modelismoartesanal.eu%2Fimages%2Fstories%2FDresine%2Fnovos_foruns%2F28AGO2012_1.jpg&hash=496d4bfdbf22de8291d49c4b55f8d0d5d02b166d)
A closer picture of the low relief detail:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.modelismoartesanal.eu%2Fimages%2Fstories%2FDresine%2Fnovos_foruns%2F28AGO2012_2.jpg&hash=16912a5ec4ad95fd2fca337cf28c1f3c49928863)
The glasses that will fit there are a bit harder to photograph:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.modelismoartesanal.eu%2Fimages%2Fstories%2FDresine%2Fnovos_foruns%2F28AGO2012_3.jpg&hash=4db246480d4b2ed0a2e9484990238ee81c87c807)
The chassis where everything will (hopefully) fit like a glove:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.modelismoartesanal.eu%2Fimages%2Fstories%2FDresine%2Fnovos_foruns%2F28AGO2012_4.jpg&hash=2c1f244d92ecbe2c1c9fe870058483bf86b5ad3a)
And the top of it, I had to do some extra pieces in order to get the exact shape of the prototype:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.modelismoartesanal.eu%2Fimages%2Fstories%2FDresine%2Fnovos_foruns%2F28AGO2012_5.jpg&hash=52dbce15ed8efd1b6f01be6f31bf5e2d52529875)
Finally a picture of the pieces I'll use to do the small back sides of the cargo area, I took a picture of the darn thing together with a 0,50 € just for you guys have an idea of how easy is to loose them... again!
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.modelismoartesanal.eu%2Fimages%2Fstories%2FDresine%2Fnovos_foruns%2F28AGO2012_6.jpg&hash=ecdc478ea71dcf99060f99bcf7c2066a8400b49d)
Everything went together already so I'll post a few pictures soon. There's still a lot to do.
Looking good. I believe that 0,50 € is about the same size as an American quarter. Me .. I'm interested in the actual process of machining these .. what equipment, software etc.
The pictures above were from some days ago, I started to put the parts together and this is the current state:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.modelismoartesanal.eu%2Fimages%2Fstories%2FDresine%2Fnovos_foruns%2F06SET2012_1.jpg&hash=e51de36bd621ffc905dbab61107d37ae907865f4)
Since it's a work in progress some parts may appear to be slightly out of place:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.modelismoartesanal.eu%2Fimages%2Fstories%2FDresine%2Fnovos_foruns%2F06SET2012_2.jpg&hash=6a2be72877ffc26d46f0fb51cfb2db59bafb2ba6)
From above:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.modelismoartesanal.eu%2Fimages%2Fstories%2FDresine%2Fnovos_foruns%2F06SET2012_3.jpg&hash=a1a9fbd012d6367f1b0233a1d57035f0458f2fc3)
That's it for now.
Wow, that's tiny. Nice work so far!
Nice to see some new posts Nelson!
Glad to see you back, and back on track :D
Looking good so far, I agree it is small!
-Marty
Well, some progress has been done on this project. I redesigned everything from scratch since there was some interest to make this as a kit, although that isn't my main concern it might become available one day.
At this point I have almost every part ready for painting:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.modelismoartesanal.eu%2Fimages%2Fstories%2FDresine%2Fdre_mai_1.jpg&hash=47ce3249f36fcc564f6bee39e3246557f3ae6cee)
And this is a test fit without front and back bumpers, there's also other parts missing and glasses are only stuck in place:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.modelismoartesanal.eu%2Fimages%2Fstories%2FDresine%2Fdre_mai_2.jpg&hash=e21c38300f5cdb3b004b279170ec7c69e6945614)
Since painting is my weakest point it might take some time to finish this one!
That is really neat, and very tidy building skills.
Could you share some details as to how you did the roof, I need to make something similar and would interested as to how you approached it ........ And also the some details on the windows and their black surrounds
Thanks
Thanks Gordon,
As for the roof, and since I needed to make a few I carved a master in styrofoam made a silicone mold and poured some resin. Carving was made in my cnc machine after designing it with Sketchup.
The windows are 0,4mm thick clear styrene in which I carved (using the cnc again) inside the edge a 0,4 mm/0,2 mm recess. This way painting is a lot easier and since I want to simulate rubber I used a flat acrylic paint to do the job. In the photo below you can see some windows yet to be painted that belong to a TTm scale old city tram I'm building:
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fwww.modelismoartesanal.eu%2Fimages%2Fstories%2FElectricos%2Felec_mai_3.jpg&hash=b28aa7d0fa6b6e4a6c836437e4016425e603c11c)
Thanks for your interest once again.
No wonder everything fits. -- Russ
Thanks Nelson for the info, was really hoping it was not machined ;D
Still I can just about handle Sketchup now , so I will sort the drawing and send it to you for the CNC bit ;D
All this digital stuff!!! we need to get back to the analog stuff where folk filed away their fingerprints. just sayin' :)
Looks really neat! but way beyond my humble skills. of pushing a file across a slip of metal or plastic.
Michael
Quote from: michael mott on June 03, 2013, 08:52:48 PM
All this digital stuff!!! we need to get back to the analog stuff where folk filed away their fingerprints. just sayin' :)
Looks really neat! but way beyond my humble skills. of pushing a file across a slip of metal or plastic.
Michael
Yeah!Just think one day we'll be able to put a picture [digital of course] into the machine, credit it with a zillion zonks and out will pop a perfect replica in your choice of scales - now, that'll be real modelling.
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PS - I'm taking the piss.