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| Steves 3D printing workbench (81F aka 81E on other forums) - On Members Workbenches. - More Practical Help - Your Model Railway Club | ||||||||||
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The Q Full Member
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Allan, perhaps this video will help, she prettier than me anyway... https://www.youtube.com/watch?v=e0rYO5YI7kA Q ____________________ Now finally starting a model railway... |
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allan downes Full Member
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Thanks Q Unbelievable but my old worn out brain just couldn't handle it ! Allan |
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GagginForraPint Full Member
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Another method is called SLS (selective laser sintering) and this can be either plastics or metals. This method fuses a thin layer of powder using a laser, the 3D part is built up in successive layers. Accuracy is around +/- 0.1 mm on dimensions, the smallest detail around 0.5mm. You will need some method of creating a computer model of what you want to print. I've used the process to produce nylon parts at work,with great success, but haven't yet tried it for model purposes. I can post the companies I've used if anyone is interested? |
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81F Full Member
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Hello Allan, Sorry for not getting back but the other half has kept me busy with DIY around the House! I think the others have explained the process but in simple terms you create a 3D virtual model on a computer aided design package and send it off to a 3D printer. I do not own a 3D printer myself so I use a firm called Shapeways. The 3d models themselves are built up from cubes, cylinders cones etc. which are stretched and combined to shape whatever I am after. These shapes can also be subtracted from a model to make holes and hollows. Unfortunately there are limitations. Some materials do not print finely enough or have a rough surface particularly the sintered varieties, but others can be almost as good as die casting, but these come at a price and fine components can be fragile. So far I've not had much luck with buffers, while I can get them printed the heads trend to snap off unless I make them overscale so I tend to buy commercial castings or turnings. Also it is good if you want several identical objects since you can just order multiple prints ____________________ Modelling the GWR in the Welsh Borders, and the Glyn Valley Tramway with quite a few bits from elsewhere! |
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81F Full Member
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 One of my latest creations - a GWR Cordon after some fettling (to get the tanks cylindrical, painting and a few bits of wire and Markits buffers and brake stanchion. ____________________ Modelling the GWR in the Welsh Borders, and the Glyn Valley Tramway with quite a few bits from elsewhere! |
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81F Full Member
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My latest 3D print project sent for a test print is a 6 wheeled GWR Tadpole - computer generated preview below ____________________ Modelling the GWR in the Welsh Borders, and the Glyn Valley Tramway with quite a few bits from elsewhere! |
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81F Full Member
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 The finished model just awaiting transfers. Future projects will be the version with the Guard accommodation and possibly a couple of Bogie versions ____________________ Modelling the GWR in the Welsh Borders, and the Glyn Valley Tramway with quite a few bits from elsewhere! |
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81F Full Member
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 My latest project is the Collet 8 wheeled tender chassis. The photo is of my second test print in WSF plastic which is quite granny but good enough to make sure the thing will fit to the Hornby (ex Dapol) tender body. Just realized that the springs are not quite right and the brackets between each set of wheels should be single and offset so have made some changes to the 3D computer model and ordered another test print. Once I have perfected it I will probably print in a much higher definition plastic and possibly offer it for sale. ____________________ Modelling the GWR in the Welsh Borders, and the Glyn Valley Tramway with quite a few bits from elsewhere! |
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MaxSouthOz Admin 
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That's the beauty of 3D, Steve. You can keep on tweaking it.  ____________________ Max Port Elderley |
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