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Author Topic: HOBC / the missing link  (Read 706 times)

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Offline Morrissentinel

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HOBC / the missing link
« on: October 06, 2018, 09:02:21 PM »
This is the new topic talking about the missing wagons from the HOBC (high output ballast cleaner). At the moment I have been creating the MFS-D wagons that hold the clean and dirty ballast which are nearing completion the original topic about these is here : http://www.ngaugeforum.co.uk/SMFN/index.php?topic=41708.0

I am also now working on the PW-RT and NB-PW which is the other two wagons needed to complete the train.
Enjoy

Online njee20

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Re: HOBC / the missing link
« Reply #1 on: October 06, 2018, 09:14:20 PM »
Iím sure you know that David Lund as Modern Image Models already does the HOBC, although Iím not sure he does the MFS wagons, and yours look great.

Offline Snowwolflair

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Re: HOBC / the missing link
« Reply #2 on: October 06, 2018, 09:17:45 PM »
Iím sure you know that David Lund as Modern Image Models already does the HOBC, although Iím not sure he does the MFS wagons, and yours look great.

David Lund is very much supporting this project, particularly as his own academic studies and career has prevented him from expanding his range of models.

I'm personally looking forward to being able to add the missing links to my HOBC.  :thumbsup:

Offline Morrissentinel

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Re: HOBC / the missing link
« Reply #3 on: October 06, 2018, 09:31:42 PM »
Hi everyone
Here is an image of the BS-PW and the MFS-D wagon that I have almost completed I will be doing the NB-PW and the MFS-B in the future but at the moment I Am focusing on the BS -PW. I will be able to use part to the front  from the BS-PW for the NB-PW but apart from that the are different units.






Offline Morrissentinel

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Re: HOBC / the missing link
« Reply #4 on: October 18, 2018, 08:21:58 AM »
Hi everyone
I have now posted a video on YouTube on the different stages of the MFS-D I hope you enjoy.
https://youtu.be/ydLcqz-4N8k

Offline Snowwolflair

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Re: HOBC / the missing link
« Reply #5 on: October 18, 2018, 11:04:25 AM »
Absolutely fabulous work :thumbsup:

Offline Morrissentinel

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Re: HOBC / the missing link
« Reply #6 on: December 27, 2018, 11:36:19 AM »
Hi everyone
I havenít really been doing much visibly on the wagons recently I have been focused on how I am going to do the etches and sorting out some other things that has caused problems with previous prints. At the moment, the etches for the first few batches is going to be made out of plastic card the reason for this is my schoolís lazer cutter cannot do metal only plastics and wood which is why I have turned to this. Also I can get the design in cad for the grills and panels to how I want them to look. Yes in the future I will sort out doing some actual etches but at the moment the first few will be made from plastic card. I cannot do anything for this at the moment until term starts due to me not having the same software as my school. The problem that I have had with most of the prints currently are that the frame starts to warp as soon as you take them out of the packaging due to the fact that they have cured properly. The only solution to this it to clamp the part as soon as it comes out of the packaging so that it can cure it the correct position without warping.



Picture of the main parts that will be in the etch.

Offline Snowwolflair

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Re: HOBC / the missing link
« Reply #7 on: December 27, 2018, 11:50:04 AM »
Or you can steam them with a kettle and clamp them in the correct position for a minute or so till they cool.

Offline Snowwolflair

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Re: HOBC / the missing link
« Reply #8 on: December 27, 2018, 01:13:01 PM »
If it is a serious problem design in a channel to put a length of square brass down to act as a stiffener.

Offline Morrissentinel

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Re: HOBC / the missing link
« Reply #9 on: December 27, 2018, 03:12:39 PM »
The slight problem with the idea of putting brass channel down the centre is that the parts that do warp are two thin to be able to do that and if I did leave a gap it would probably be worse than it is currently. I have already reinforced the base with a bar that stretches underneath but that can only go so far along. The other way is to create a piece that reinforces either end but has to be cut away once you get the print. I donít want to do that for the reason that it adds more cost to the print it already costs more than a single carriage.

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Re: HOBC / the missing link
« Reply #10 on: January 02, 2019, 03:17:09 PM »
Hi everyone
As you can see from the photos we have been painting :smiley-laughing:
Thanks to @Smiffy for doing the painting I am still slightly heavy handed with the spray can. :hmmm:

Can you guess which two have grey primer under the yellow?




Next masking and painting black


Other parts painted

Offline Morrissentinel

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Re: HOBC / the missing link
« Reply #11 on: January 18, 2019, 08:30:01 AM »
Hi everyone
I have now been able to test the possibility of using my schools lazer cutter to create an etch out of plastic card and unfortunately it is just too large and too powerful for the job. So I am going to have to think of a different way of doing it. Yes I could do an actual etch or of brass but I havenít had much luck on contacting people yet. Photo is the trial that I did on the lazer cutter, as you can see the etching the plastic failed but it can scribe it. The actual lazer is about 0.5 mm which is too large and the edges end up with a bur.


Offline Snowwolflair

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Re: HOBC / the missing link
« Reply #12 on: January 18, 2019, 08:43:13 AM »
Hi everyone
I have now been able to test the possibility of using my schools lazer cutter to create an etch out of plastic card and unfortunately it is just too large and too powerful for the job. So I am going to have to think of a different way of doing it. Yes I could do an actual etch or of brass but I havenít had much luck on contacting people yet. Photo is the trial that I did on the lazer cutter, as you can see the etching the plastic failed but it can scribe it. The actual lazer is about 0.5 mm which is too large and the edges end up with a bur.


Use perspex as it evaporates rather than melts so no melt back.

Offline Morrissentinel

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Re: HOBC / the missing link
« Reply #13 on: January 28, 2019, 08:52:51 PM »
Hi everyone
As some of you may know the prices on shapeways are due to rise dramatically over the next few days so I have decided to release the current print for the Mfs-d on shapeways as singular, double or five wagon sets. It should be going up later tonight.

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Re: HOBC / the missing link
« Reply #14 on: January 28, 2019, 09:01:55 PM »
Whats your shop name?

 

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