Three-D Modelling for Railways

 Egglestone Abbey is a mile or so southeast of Barnard Castle. It was founded between 1168 and 1198, but largely rebuilt a century later. It was a Premonstratensian abbey, and was technically run by canons, rather than monks. It was dissolved in 1540 by King Henry VIII, and much of it pulled down. The main church was laid out like a cross on an east-west alignment - as usual - with further buildings on the north side, including cloisters to the northest. I have modelled the east end of the nave in one section, and the presbytery and alter in the second, and not bothered with the rest, as it is quite large! I had to scale it down to 80% to fit it in the printer.

I created some petrol pumps several months ago. A couple of weeks ago I decided to do the whole petrol station. This is available to download from Cults3d for €2.50 . It is loosely base on Middleforth garage, as it was a couple of years ago with a Spar attached (it is now an Asda). I designed it so it could be lit up. There is space in the shop for two LEDs, and and another two in the canopy. The pillars are hollow to allow wires - though I had to use a pin drill to open the hole up.

I remember milk being delivered in an Express Dairies milk float as a kid. There used to be a line of three of them parked outside the nearby pub (itself a work-in-progress) after they had finished their rounds. D6 Electricar This is a D6, which is I think what I used to see, though I have not found much evidence Express Dairies used that model. It is kind of the classic model of milk float, and has appeared in numerous TV shows and movies, including Father Ted . Nevertheless, I have not found out much about it at all. It was built by Morrison Electricar in 1966, and possibly as early as Septemer 1964, at their factory in Leicester, which later moved to Tredegar, Monmouthshire. The company went through a number of name changes, including Crompton Leyland Electricars Ltd. but was still making them in 1974.  The earlier D5, which seems to have been the model in 1964, had a flat windscreen , but was otherwise quite similar. The D4 looked quite different and may date from 1954? As far ...

Exposure time is how long each layer is exposed to UV light during printing. It is not something I have worried about much because the default settings seem to work fine. I am using Elegoo resin in an Elegoo printer, and Chitibox has built in settings for that. The only thing I have adjusted is to increase the exposure of the bottom layer slightly to help adhesion to the build plate. If exposure is too high, you will get fatter pixels and hence loss of detail. Some recent prints were supposed to have a small hole through them for wires to go through, and this was getting blocked, and i wondered if high exposure was the problem. If exposure is too low, you will get thinner pixels, and possibly loss of structural integrity. Some places recommend reducing exposure for small, detailed models, and raising it for larger models. I found a calibration STL by AmeraLabs here . The default exposure time for my system is 2.5 seconds. I also tried 2.0 and 1.5. In the top image, the 1.5 exposure is ...