F2Andy

I wonder if 19 mm is a wargaming scale?

I am looking to make some of these. They are some great images here: https://paulbartlett.zenfolio.com/procorcovhop But none show the top. Would anyone have any idea what would be up there? I am guessing a platform to walk on, accessed via the ladder, which is the bit the sticks up from the curve. Looks like three sets of three somethings on top in some images... Would there be three compartments internally? And I guess a hinged metal cover for the the openings. Would each compartment have three square openings or one longer one?

Has this one been on here yet? Avoided the bus-on-a-bridge cliche by posing a lorry on there.

The single slip on the left shows how complicated it gets with dual gauge. The standard gauge crosses from right to left on the curve.

If stuff fails to print on one section of the build plate, but okay on another, it is probably a levelling issue. I doubt it is mixing. I leave mine to stand in the vat for days and before printing, and it is fine. When filling from the bottle, I turn the bottle upside down a few times; I avoid vigorous shaking because of the bubbles. I use Elegoo 2.0 resin, but I guess that is pretty close to what you are using.

I do not think that is quite right. They have dimensions, but not units. That means the software will try to guess if you mean cm, mm or even inches. It does not mean it will be a random scale. I use Blender and work in meters in there. The STL file has no units, but ChiTuBox usually just guesses mm because that is what fits the print area. For a small part it guesses cm and I have to scale it to 10%, but I once had it guess inches and had to scale it down to 3.94% (=1/25.4x100).

My printer is in the garage, which is not attached to the house, and pretty cold in winter. I have a vat warmer, as used by home brewers, but even with that it is not worth printing if the outside temperature is below about 8°C. I managed to do quite a bit a week or so ago when it was warmer, but back on hold for now.

I use Blender. The full version is free. I have written an introduction to using it here: http://www.prestonanddistrictmrs.org.uk/articles/using-blender-for-3d-printing/ And some examples of wagons I have printed on my blog: https://three-d-for-railways.blogspot.com/2023/05/various-tank-wagons.html

My understanding is they carried pallets 45-gallon drums in the end compartment, and larger drums on cradles in the centre. I guess it was for lower volume chemicals (i.e., less than a tank wagon) between sites.

Thanks a lot. I looked on the site, and I just could not see it! Further question: Could any one say what colour they are? I see two images of them in ICI livery, taken at Stoke Wagon repairs in 1981, and there is an ICI logo on the right end. I am red-green colour blind, but my feeling is there are very faded red? Pinkish grey maybe? Bachman do an ICI open for 009, and I wonder if these would have been the same red originally?

I am part way through making a model of an open wagon that ICI used ca. 1980. I am sure I had photos of it at one time, but cannot find any now. They were later used by Redland, and I can find an image from then. In the ICI day they had partitions dividing the wagon into three parts, and this is what I am modelling. And I must have seen an image to model it! Anyone able to help?

Happened to me a second time. This is the page it takes me too.

I left an RMWeb page open. When I cam back a few hours later, there was a message supposedly from McAfee saying my anti-virus had expired and I had to take action. This was undoubtedly a scam, and taking the action they wanted would have resulted in an infected computer. The browser had redirected me to a new web pae that used the domain eu.securitypatch.life . I would guess this resulted from one of the adverts on the page. Users should beware, admins will hopefully investigate and stop said adverts.

How about inverting this so the fiddle yard is on the inside, and at a lower level? You would have a long run, everything should be accessible, and it will be a lot easier than a helix.

For 3d, I would recommend Blender, though it is not strictly CAD. http://www.prestonanddistrictmrs.org.uk/articles/using-blender-for-3d-printing/ For 2d, I agree with Buhar that InkScape is a great choice, being both free and easy to use.

The downside is every lump of coal is rectangles and right angles - no variety in the shape. How that will look when printed, I do not know. There is likely a way to resolve that, but I have not used geomtry nodes much at all. Here is how it was set up. ETA: Updated image. This uses a dodecahedron as the basic lump of coal (you need to activate an add-on "Add Mesh: Extra Object") . Also has a "Realize Instances" node just before the end - if not there, the coal does not show up in the STL file!

You can do similar in Blender using geometry nodes.

That is such a delightful building I could not resist making a model - even though I have no plans for a layout or even any GWR rolling stock. A 3d print in N gauge; the photos serve to highlight my deficiencies at painting... Of course, now I have that, I am wondering about a layout... Only five points, how hard can it be?

Further to my earlier comment, the heating strip is adequate for lowish temperatures, but not the near freezing we have had recently. I think the build plate is too cold. Now considering some kind of thermal enclosure... or accept I cannot printed when ambient temperature is less than about 7-10°C.

I have recently got a heating strip for brewing, and it seems to be working well. I got one with a controller, and keep it fairly low. I also got an IR thermometer so I could see just how warm it is. I set it going a good thirty minutes before hand, and turn it right down before starting the print.

I would try it out on some scrap wood of the same thickness first to see how it goes - or even somewhere on the baseboard where it will not be seen. Very easy to drill too far and break the point.

Sorry if this is not quite on-topic, but what did it mean on EMUs?

I use Blender and Chitubox, so this may be different, and I am not sure exactly what the issue is, however... After exporting the STL file, I always load it up in Microsoft 3D Builder. It will check for errors in the model, and repair them for you. Then save it - I suggest to a new file or folder that flags this is the repaired version. It can be slow with very complex models, but I have yet to have a model fail because of a bad STL files (plenty of other failures...). It is free too!

The map Harlequin links indicates the line to south splits off with "GWR Wycombe Branch" to the west, and "GW and GC Joint Railway" to the east. But these appear to be just the up and down lines to Saunderton and onwards to London. What is the story there?