My first post was back in February - before I had even purchased a 3d printer, and it is now November and I am writing the introduction... This blog is all about my experiences for 3d printing. It is a way for me to share what I learn along the way, and to show off what I have created. Most pages are tagged Model and are about a specific model, and the prototype it is based on. Generally I try to visit the prototype, and include a couple of photos of that for comparison. I also try to learn the history of the building, which is not always easy, and record that on the page too. A lot are buildings in and around Preston, as that is where I live. Models are further divided into Building , Railway (i.e., railway-related buildings), Feature (bridges, tunnel portals, etc.), Rolling Stock , Vehicle and Clutter (smaller items) In addition, there are pages tagged How to and Prototype . If you want to know how to use Blender to make 3d models, there is an article I wrote on another s...
Around Easter I pre-ordered a mini-heater for my printer, in readiness for the winter. It arrived a couple of weeks ago, and today I fitted it, as the temperature in the garage was 13°C at 8 am this morning. The instructions are rather unclear, but there is a video here: https://www.youtube.com/watch?v=S7o60xKvTeM And it was actually very simple - though easier if you have a friend to hold it while you put the screws in. Here it is in place, and in action. My first heated run is going! ETA: The run, and and a subsequent one, went fine. The temperature - as it reports anyway - was between 25.0 and 26.0 every time I looked at it. Have to wait and see how it copes when the ambient temperature is sub-zero, but looking good! ETA: Now November, and getting cold. The temperature it reports is about 5 degrees less than my thermometer - not sure which is right, but I suspect not the heater! But does it matter? As long as it is consistent, that should be fine, and it is having n problem ge...
This is an issue I hit whilst revising Lund Church. A model is made up of polygons, and each polygon has a front and a back. In Blender it is not obvious which is which, though Blender does track it. And occasionally it gets it wrong, and a section of mesh is, in effect, inside-out. When you try to print out, there is just a hole there. In the image below you can see some of the stones to the left of the windows are not just missing but also caused holes in the superstructure. Microsoft 3D Builder does not spot it, all looks good in there. But Chitubox does. It will not actually say anything or stop you producing a bad file, but it does highlight bad bits in your model. In the image below, all that roof is wrong, the right side of the arches, a part of the cross at the end of the roof, and some stones in the tower. All are shown in a much darker colour. So what are normals? Behind the scenes Blender creates a vector (essentially a line) that starts from the centre of the polygon and ex...
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