Andrew's 3D print builds

I used a Hormby Mk2F BSO as the donor....

1.       I removed any obvious burrs from the prints with a small file or sanding stick...I also made sure I was happy with the surface finsih on the cab sides by light sanding and filling as necessary

2.       disassemble the donor, removing glazing strips and removed unnecessary parts from underneath the chassis.

3.       Cut the interior end off to allow the cab to fit

 

4.       I cut the body to accept the 3D printed cab. Note the cutting pictures below

 

 

 

5.       Then I fetteld the cab and body to get a nice clean join at all faces and glued the cab in position

6.       Fill and prime and sand until happy

7.       Add the roof detail, referring to pictures of the prototype as necessary

NOTE: I use a bit of wet’n’dry to mimic the exhaust on 9701 (9702 does not have it)

 

 

8.       Blank the windows (note, you can use the original glazing by painting out the relevant window or use printed window blanks and cut the appropriate gaps in the glazing)

 

9.       A test fit the body back to the chassis. NOTE:

a.      I was careful not force the cab end over the chassis. It was slightly tight to fit the end to the cab, so I carefully filed the inside of the cab corner bottoms to fit around the chassis

b.      without the glazing it will not clip on, but, the main body hasn’t altered so it will when assembled

10.   Fill, prime, sand and paint the body

 

11.   Modify the donor glazing to allow it to be refitted.

12.   Use glue’n’glaze to glaze the cab

13.   Put the body to one side and modify the chassis:

 

14.   Clean up the chassis and glue fit the air reservoir (cylindrical tank) and fuel tank (9701 only)

 

15.   Reassemble!

16. Add additional details and transfers

 

 

 

Edited February 12, 2023 by LMSfan72

.... having built a few, I thought I'd go back and add some lights,..........coming next!

I used a newly printed cab to try this out, and painted it up so I might just replace a previous one if it works....

 

I then started by getting:

 

3 white 2mm tower LEDs

2 red 2mm tower LEDs

6 UV/purple 1206 SMD LEDs

 

The cab already has the holes printed in for the driving lights.

I soldered some fine enamelled wire to the SMD LEDs.

Then I carefully drilled small holes through the bracketry. I threaded the top UV lights through:

...and tested them:

 

The camera doesn't do the colour justice but they looked good to me!

 

Then I formed the tower LEDs into a clusted and painted all but the ends black and soldered the legs into a structure. I built a small board to just let me connect them up:

 

With it all working quite nicely, I added the other UV LEDs, glued them in position and painted the surrounds black. Whilst I had the fine paint brush out I painted the junction boxes too....

 

Edited November 12, 2021 by LMSfan72

So, having proven that this was going to work I decided to build 9708 with all the working lights on a Bachmann MK2F chassis.... 

 

Stripping the glazing was an absolutely shocker, I think if I was to do another Bachmann I'd try and mask the windows rather than remove them. I also found that my normal method of stripping the body with Dettol softened the plastic on these a little which made it easy to mark. So, not perfect from a donor perspective but it does have great pick-ups on the bogies!

 

I chopped the body and, since I had pre-printed the trial cab that I was going to use, painted it before fitting the cab end. This was going to be a test of how well my door lines masked the join.

 

Before I glued it together I fitted windscreen wipers, grill and driver as well as resistors and a "plug" to the inside of the cab. This would be easier than doing it when glued into the body:

 

Once the cab was fitted I could trial fit to the chassis. I found I need to cut away a little at the front to fit:

 

 

The cab and body joins were pretty acceptable:

 

 

The glazing isn't perfect - I may try some more varnish to it, we will see....

Now, having invested in the more expensive Bachmann donor, and succeeded in getting the lights fitted I have decided to go the whole hog and fit sound to this one!

 

I got one of the "new" (to me anyway) Loksound 5 Fx function only decoders so I thought I'd try that. I have no idea what a DBSO sounds like so I just downloaded the ESU Class 77 (European Class 66) sound project for free from ESU and decided to modify that. I am using the compressor sounds to represent the generator and the horns and miscellaneous noises but I have removed the drive sound and fans so it doesn't have the Class 66 engine noises. I then mapped the various light functions....

 

I couldn't work out why the lights didn't seem to follow the function settings until I realised I was likely pulling too much current with multiple lights on. Fortunately, the decoder lets me reduce the brightness of the functions individually so by tuning these so that the cab, markers, tail lights all are toned right down drawing much less current I found  can have all of my combinations working nicely. I haven't fitted compartment lighting, which appears to be a good thing!

 

I thought I'd try without a stay-alive first. I am seriously impressed with the combination of the Bachmann pick-ups and the decoder on initial testing - I don't think I need a stay-alive at all.

 

I still need to refit other body details and some handrails on the driver door as well as the chassis tanks before decals, snowplough etc... but, I am really happy

 

(Then I need to gather my energy to finish 9707, 9714, 9701 and 9702 (or maybe 9703)....... only 9701 or 9714 will be a Bachmann the others will be Hornby.)

A picture with the lights on. The camera doesn't do the purple justice!

 

Edited April 4, 2022 by LMSfan72

Spotted a couple of extra roof details to add:

 

These look excellent! I have converted several DBSO'S in Anglia, NR and DRS using PH Designs etches, with excellent results. I have just purchased one of these kits on Ebay and really looking forward to giving this a bash!

 

The prints appear to incorporate the fine wind deflectors etc, that you could never get with previous whitemetal kits.

 

Excellent job.... watch this space!

On 20/12/2021 at 17:53, Melton Works said:

These look excellent! I have converted several DBSO'S in Anglia, NR and DRS using PH Designs etches, with excellent results. I have just purchased one of these kits on Ebay and really looking forward to giving this a bash!

 

The prints appear to incorporate the fine wind deflectors etc, that you could never get with previous whitemetal kits.

 

Excellent job.... watch this space!

Just reach out with any questions!

Well, the DRS DBSO is coming on nicely. Really impressed with the detail! Here is where I am now....

 

Will keep you updated

On 08/01/2022 at 13:45, Melton Works said:

Well, the DRS DBSO is coming on nicely. Really impressed with the detail! Here is where I am now....

 

Will keep you updated

Out of interest, what paints did you use for the body and doors?

On 30/11/2021 at 11:12, LMSfan72 said:

 

 

(Then I need to gather my energy to finish 9707, 9714, 9701 and 9702 (or maybe 9703)....... only 9701 or 9714 will be a Bachmann the others will be Hornby.)

That may be changing - now that Bachmann have announced their version I think 9702/3 may never get finished.... I can focus on all the others :-)

Added a little more detail - rivets, connectors, handrails etc.... for 9701. Just waiting for the test print to come off.....

 

Edited April 4, 2022 by LMSfan72

Very pleased with this. Handrails are very fragile, but, came out nicely. Just a coat of primer to highlight it as it came off the printer. I could have washed it better! No surface clean up or anything else but high magnification shows where I drilled out the light holes. Next print will have these already in:

 

Edited April 4, 2022 by LMSfan72

Tiny little air bubble on the electrical junction box to fill - I suspect the resin was a bit cold so a little thick, but, so much better...

 

Edited April 4, 2022 by LMSfan72

These DBSOS are going to be outstanding! I know Bachmann have announced the Anglia DBSO, however I would love to have a bash at one, so was wondering if you were likely to produce some of these yourself?

 

These are the best 3d printed examples I have seen, other than Pete Harvey's excellent etches, which are great to work with, think you are really on to something here!

 

Been a bit busy with other projects, but will keep you updated with the DRS DBSO as time allows.

 

Keep up the excellent work!

 

Kev

Sorry Andrew, seemed to miss that one regarding the paint. Well for the end that is Railmatch Warning Panel Yellow, and for the bodyside, Renault Royal Blue. Not 100% match, but close.

On 02/02/2022 at 18:55, LMSfan72 said:

Out of interest, what paints did you use for the body and doors?

I only ever use aerosol and produce some excellent results. Years of practice!

10 hours ago, Melton Works said:

These DBSOS are going to be outstanding! I know Bachmann have announced the Anglia DBSO, however I would love to have a bash at one, so was wondering if you were likely to produce some of these yourself?

 

These are the best 3d printed examples I have seen, other than Pete Harvey's excellent etches, which are great to work with, think you are really on to something here!

 

Been a bit busy with other projects, but will keep you updated with the DRS DBSO as time allows.

 

Keep up the excellent work!

 

Kev

So it looks like the Anglia ones can have both the wider or narrow window depending on running number. Other than that the differences to my NR 9702/3 appear to be the headlight surround, the cut out for the electrical connector and the wiring on the front (both of these last 2 like the DRS version I do). I can give it a go when I get some time.....

8 hours ago, LMSfan72 said:

So it looks like the Anglia ones can have both the wider or narrow window depending on running number. Other than that the differences to my NR 9702/3 appear to be the headlight surround, the cut out for the electrical connector and the wiring on the front (both of these last 2 like the DRS version I do). I can give it a go when I get some time.....

Here's one I made earlier based on the Bachmann model and PH Designs etches

I think this is fair representation of 9701 in Anglia configuration

 

Edited April 4, 2022 by LMSfan72

6 hours ago, LMSfan72 said:

I think this is fair representation of 9701 in Anglia configuration

 

That looks spot on! If you could produce a couple of these, that would be excellent!

Kev

Just waiting on a spare controller board for the printer! Probably a couple of weeks….

52 minutes ago, LMSfan72 said:

Just waiting on a spare controller board for the printer! Probably a couple of weeks….

No rush, but would love to model a couple of decent Hornby Anglia Dbsos and of course will do a step, by step on here. I'm definitely wont be rushing out to pre order a new Bachmann one anyway!

I might give it a go on my older printer whilst I wait. Just going through the process of ensuring the stl is good enough to slice!