Timber

Brecon and Merthyr No8 starting to take shape. 

The wheels are Ultrascale EM.  They spun me up some correct length axles.   Going forward I may print my own wheels.  The number of spokes is slightly wrong but given this is the first time I have made an OSF engine, I wanted to start with a system I know works.  I will be using their outside cranks.

Dome and safety valve off for casting in brass.  

I agree with Rosedale this is a very fine model.   Sticking the coach roof on makes sense to me.  It is far simpler than trying to work out a way of making a removable roof.  Particularly on a coach like this where the roof is much better deployed to strengthen the sides than making something removable that will probably never be removed.

Very nice work....sending out the invite to the next zoom call later this evening :-)

Photo from AGM, the very fine E Class (refered to in SGF post) behind its big brother old I Series.

I have not posted on this topic for a while.   Following the last post I have built the three Manning Wardle Old I Series owned by the B&M.   I have uploaded these to a seperate thread I am compiling on my B&M engine collection.   

But what I did want to post here is a video I receievd yesterday from a fellow member who has made a nice job of building one of these engines, using the 3D prints and etches described in this thread (plus their own superb skill and patience). 

This build is using split axles.  The etch supports both split axle and pickup construction.

Happy to help anyone else who wants to have a go.

I have successfully resin printed wagon and coach wheels together with some small manning wardle wheels.   But for larger wheels I have also struggled using my resin printer to secure the quality I want.

Therefore, I use Shapeways and print in their smooth fine detail Nylon.  If you join the wheels in a strip the cost is very reasonable. 

I have engines running with wheels printed by Shapeways over three years ago and they are as true today as the day I fitted them.

However, I am not an expert at resin printing, I am sure that others have had better experiences.

Fellow member asked me to create an STL for a Sharp Stewart 4'6" 14 soke 12" throw PB.  Drawn to fit one of our 4' 6" Society Tyres.

Here is the link to the STL in case anyone in the future also wants similar.

https://drive.google.com/file/d/14nfTeNWd_wQQC4zRTY3tYxpvV2TbvSpW/view?usp=sharing

Third of the Manning Wardle Old I Series - Number 17  Blanche

Here is Number15 Little Usk.  The second of three Manning Wardle Old Class I Locomotives owned by the B&M.

Number 16 Lady Cornelia

Hi,

I cant compare as I do not have any Code 100 rail and even if I did it would be difficult to see in a photo given the relative size.

There are lots of possitive reasons to join the society, it has a unique place in our hobby.

Here are some photos of the rail I bought a couple of years back through the society store.

amazing

Have this small chassis on the workbench - hopefully will fit a motor and gearbox over the next few days....

The model will be part etch and part 3D print.   Etch artwork completed and set off to PPD to work their magic.

We had a discussion at the last Zoom call on artwork prep for 3D etching.   I simply draw my etches in Visio, save as a PDF and then send for an etch.  The attached picture is what I send.  PPD kindly sort out the colour separation.

Next up for my collection of Brecon and Merthyr engines will be a 0-6-0 outside frame saddle tank.  The B&M had a number of these engines either built directly or acquired.  The majority of the engines were built by both Fowler and Stephenson to a broadly common design.     

For me the trick to learning Fusion is to not get too bogged down in the theory.   All the tutorials I looked at get caught up in constraints and the difference between bodies and components.

Both of these topics are important but they are not essential to making a basic model.   I was probably one year into Fusion before I really started to focus on constraints.  Just start by drawing and extruding.   Dimensions are important but these are easy.  Stick with bodies and by the time your bodies become too complex you will understand why components can help.   

Now I constrain everything and do use components to structure my models.....but I got to these gradually - I want to make models not be a Fusion expert and I found that keeping this front of mind helped me to learn Fusion.

Fusion is perfect for these types of boiler fittings,,,,

Steven presented these models on our Society Zoom call.  Some superb model making here.  Really wonderful models.

Thanks Rob.....

Still not happy with the engine performance.  Decided that the gearbox was not helping.   So having a go at printing one......

Rob - I spilt water washable resin all over my screen.   I looked online for inspiration, took a piece of cloth, immersed it in very hot water, placed it on top of the resin damaged screen, let the resin soften and then scratched it off with a plastic ruler....it came up a treat.....

wow that looks superb.......

Next up is the 3D print to make the following body.....

https://drive.google.com/file/d/1oR9o6LqZEsAbo-5d95jnUze9XSjCwytP/view?usp=sharing

I have had to make some deliberate compromises on this print to ensure that the footplate and boiler have the necessary strength.  

First up is the Tank.   This is saved in full size protype inches.

https://drive.google.com/file/d/1nHvdE4P6kT8dVsdh0n1CBImFo3QTcCTB/view?usp=sharing

So focus now is on the printed top with etched chassis.   

I will post the prints in the next few sections.....

That said I did make one half way decent engine that I will keep ...... 

After weeks of messing around I have given up on trying to make a repeatable 3D printed chassis.  By repeatable I mean something that I can just print, add wheels motor and pickups and send down the track.   With such a shart wheel base, small throw and very little weight the distortion of warping and shrinkage is too great.   Maybe I will come back to it in the future........this is a tiny sample of the number of attempts I took at this.  All conveniently sitting on top of the dustbin :-(