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Modifying and scratchbuilding with 3D prints


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Posted (edited)

I only lit one end of the sleeper because I am using the standard Dapol electronics and I wanted day and night options. I forgot to paint the insides of the WIPACs to prevent light bleed. I may remove them and do that at some point!

 

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Edited by LMSfan72
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I'm trying, this weekend, to finish detailing the Sleeper version. I've printed a locator for the original circuit board and installed that for the operational lighting, I am printing nose cables and a radiator fan and have a new grill attempt! I'm also shrinking the aerials on the cab so some touch up required there too. I'm aiming to have a presentable finished loco by the end of next week!

 

In parallel I've got to do the same for the GBRF one, albeit with a different operational lighting configuration, and am hoping that  @railtec-models  will be able to help out with the body side lettering. I'll add photos as I go!

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Cable and fan and grill

 

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Since I am doing the version for use with the mk5 coaches I also needed to do the Dellner coupling. Cut down version of the Accurascale magnetic one in the retracted position:

 

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Happy with snowplough now
 

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This is the chassis mounted one. The bogie mounted one looks good too, just waiting for the paint to dry on that…..

 

… speaking of which, I will have to retouch the yellow front after all this fiddling about!

 

 

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Second sleeper on the way. I have also now printed a jig to help with putting the body shell back together. it takes about 3 minutes to cut the cabs off and I then fit them to the jig and super glue the new body section in place at the roof level. I then use epoxy for the rest of the join and if needed glue paper inside to reinforce. Really easy as a modification now!!

 

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Once primed I can fill and clean the join line….

 

 

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On 16/03/2024 at 07:20, LMSfan72 said:

All my coach models are designed so that the body “locks” into a chassis - or are single piece - to combat any distortion that happens over time. I am concerned that as the 73 is an open shell it may distort. I am being asked if I will sell the prints but because of this risk I am hesitant to do that. I am considering if another option is to print the entire roof and then the side grills/louvres separately so that an existing shell does form the “skeleton” - back to how I was doing it in earlier posts.

 

I will finish a test model and we can see if it distorts!!


I am pretty sure I have designed out any distortion issues and I now have a jig to help build. If anyone is interested in a 73/9 conversion kit still, just reach out by PM!

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  • 2 weeks later...

I tried to hand paint the detail on my first sleeper and wasn’t that happy with my results. This time I masked and airbrushed, very lightly, and am much more pleased

 

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I also decided to edge the roof grill with paper

 

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I learnt a lot on the first builds, not least of which how difficult it was to get the LEDs in place. I had a “eureka” moment overnight and have tried a 2 piece WIPAC for this one. The LED will fit in the WIPAC base and the cover is recessed to take the full lens. They will only get glued in once I have painted the yellow ends.

 

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The GBRF one is getting there now…. This will become either 73963 or 73962. The latter needs the emergency ladder bracket fitting to above the AAR multiple working socket so I am working on one of those! 
 

I didn’t think I’d be able to print the pipes and brackets, but, I have to say I’m happy with last nights design!

 

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Having spent more time on the WIPACs getting them better for fitting LEDs I decided that this one will be wired to a Loksound chip with at least 10 functions to control more light modes at both ends. 
 

put back on its jig whilst I wait for supplies!

 

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