Garden Railway Forum

Just in case you need it too ....


Rik

That looks good Rik.
Can't say I've ever heard of your elephants foot before and as far as I know I haven't suffered from it ( my shoes still seem to fit OK! )! I've printed several of these with no probs.

philipy wrote: ↑Tue Oct 20, 2020 12:36 pm That looks good Rik.
Can't say I've ever heard of your elephants foot before and as far as I know I haven't suffered from it ( my shoes still seem to fit OK! )! I've printed several of these with no probs.

How have you got the detail on the inside of the wagon? Did you print the wagon body as a whole unit or each side separately before gluing them together?

Rik

A bit of a mixture tbh.
The basic box was printed as one piece and then the iron work and end stantions were printed seperately and glued on. The floor is a piece of scribed 2mm styrene glued inside the body and the underframes etc are printed and glued together underneath. The floor was done that way partly to save printing time and because it easier to get the grain effect with a file on a flat sheet than trying to print it somehow.

Interesting. I suppose printing the sides vertically works well as the striations give the impression of woodgrain. I wouldn't have dared to try printing the body in such an orientation on my old printer, but I could give it a try on my new one.

Rik

ge_rik wrote: ↑Wed Oct 21, 2020 8:41 am I suppose printing the sides vertically works well as the striations give the impression of woodgrain.

Yes thats what I thought about the horizontals.
I was very reluctant to try printing bodies for quite a while because my first attempt when I was still very much a novice was a complete disaster. That was simply a classic case of trying to run before I could walk!
By chance I've been doing some playing with a wagon body using very fine settings and when it came off the printer last night I was extremely please with the results.:
It's an iron bodied wagon, the walls of the model are 2mm thick and printed in PLA with 0.1mm layer height. The strapping is standing proud by 0.5mm. This is straight off the printer with no cleaning up at all. The striations are more obvious under the harsh flash than they are in real life.
The little bits of mess on the front top edge I expected, they are the printer trying to deal with unsupported hinge loops!

I wonder if I dare try at 1mm wall thickness??

philipy wrote: ↑Wed Oct 21, 2020 10:46 am I wonder if I dare try at 1mm wall thickness??

I've always slightly over engineered my models even before 3D printing. I reckon they need to be more robust to account for the heavy handling they get on my railway and to withstand the occasional plummet!

Rik

I recognise that wagon Philip! It's a nice prototype, isn't it? And you're making a lovely job of it...

I haven't done any more drawing yet, but I spent lunchtime today collating photos (I'll send them to you) from which I should be able to work out some measurements - but the floor's about right, so if everything else is roughly in proportion you should be more or less OK...

The 2mm body looks good to me - and you can always add the strip around the top, which would disguise the thickness anyway...

All the best,

Andrew.

I shall have to try printing wagon bodies in one piece like that. So far I have always made them from separate components.

Just as a final offering wrt the Ashbury 4 wheel coaches. Here they are finished:
I think they are as good as I can make them - however I were to make them.

What I have worked out is that there are errors in the drawing I used. I took the drawing from the 7mm associations book on the Festiniog rolling stock, and it shows a central external frame vertically in the central panel. I note that photos of the original coaches - and my own photo of the replica show that the central panel does not have a central bar across it. I have altered the CAD files and will print out more in due course.

Trevor

Those coaches look really good, well done.

Trevor Thompson wrote: ↑Fri Oct 23, 2020 2:46 pm I shall have to try printing wagon bodies in one piece like that. So far I have always made them from separate components.

The drawback is it's next to impossible to print anything with more than a nominal overhang, of course. So coach pannelling i doubt would be feasible.

Here is a roof I printed vertically, comes out very good. Printer is a Creality Endor 5 Pro.

(pictures may take a while to appear due to a DNS issue, but they should eventually appear)

Trevor Thompson wrote: ↑Fri Oct 23, 2020 2:46 pm What I have worked out is that there are errors in the drawing I used. I took the drawing from the 7mm associations book on the Festiniog rolling stock, and it shows a central external frame vertically in the central panel. I note that photos of the original coaches - and my own photo of the replica show that the central panel does not have a central bar across it.

Don't you just hate it when that happens?! The incorrect bufferbeam on my WHR Pickering brake happened tat way, and it still bugs me 10-ish years later!

Lovely looking carriages though, and the lining's fantastic.

Andrew.

Not 16mm but American Narrow Gauge 3D printing on another level.
From 33.40 shows you how.....

https://www.youtube.com/results?search_query=%23YVRR

Peter, I don't think that link is quite right? It takes me to a page full of video links but don't know which one you were aiming for?

It should have shown the first video listed.... it is a long video, but the 3D print part begins at 33.40...

https://www.youtube.com/watch?v=EHGkZHLqALY&t=2027s

Wow! That level of detail is really impressive. I don't think it's achievable with TinkerCAD and my £80 printer somehow ......

Rik

My latest project for the printer is a model of the original station building at Tan y bwlch.

I haven't been able to get there to take measurements for obvious reasons, so it has all had to be based on photographs from the internet. I managed to find views of each face of the building.

This is the sketch model I have created:
Because I am limited to 150 x 150 x 150 mm on the printer it had to be printed in sections. I created a solid floor to build the model around. That is in 5 pieces:
and the other side with the first three sections of wall erected:
and the current state of progress:
More as it develops!

Interesting. Are you using ABS?

Rik

Yes it is ABS.

I have persevered with that roll of white ABS which I was having problems using. A new bed surface and setting the extruder zero position closer to the bed seems to have done the trick. In fact bed adhesion is now so strong that I am having problems separating the finished section from the bed - but that is better than making scrap when the section lets go of the bed!

It is taking a while to print of course. Some sections which include doors are taking 8 hours.

Trevor

My latest effort....

Drawn in TinkerCAD and printed off. . . .
The roof (and floor) are plasticard as it seemed daft to 3D print large expanses of undetailed sheet plastic. The wheels are Lilliput metal spoked as I'm not entirely sure about the efficacy of 3D printing wheels (waddyafink?). There's still a bit of tidying-up to do and, of course, it needs painting, but I think it gives a feel for the early Southwold Railway van on which it is based.

Rik