Rabs Posted November 29, 2013 Author Share Posted November 29, 2013 Thanks, I think they are the ones I referenced in my post. Link to post Share on other sites More sharing options...
Rabs Posted December 8, 2013 Author Share Posted December 8, 2013 Next steps on the plate bogie (and how to mount wheels in general). I've decided that the resin itself isn't hard enough to work as a bearing material. So I've designed the bogie to take brass pinpoint bearings. I can tweak the sizes to make these either a gentle press fit or put them in with glue. Here is a close up of the detail I get when printed and primed: The first ones split when I tried to put the bearings in so I enlarged the holes and added some chamfers to make this seat more easily. This time they were snug: And the assembled bogie looks pretty good to me: The detail is the same as the first photo, it just doesn't show well until the model is primed. The wheels are Farish standard N gauge spoked wheels on 12.25mm axles from the 2mmSA. However, the arms tend to bow outward slightly, making the axles loose and a bit prone to falling out. I've two options here. One would be to add a brass 'H' overlay on the top of the bogie to keep the 'wings' in the right place. The other, which I will try first, is to print the wings with an initial bend inwards. This will provide a slight spring force onto the axles and hopefully keep them well seated. If neither of the above work then I'll try to print the sides as overlays to go on a etched inner (as you would with white metal parts) Link to post Share on other sites More sharing options...
sean hpw Posted December 8, 2013 Share Posted December 8, 2013 Hi Rabs, you have come a good way with these, and I love it, please keep the pics, thoughts and developments coming. Sean Link to post Share on other sites More sharing options...
Rabs Posted March 26, 2014 Author Share Posted March 26, 2014 For the past couple of months I've been snowed under with work and had run out of resin but after the long break I've made some progress with my GWR small Metro in N (thread here:http://www.rmweb.co.uk/community/index.php?/topic/81176-gwr-small-metro-in-n/). This was a test print to check the fit of the front and rear parts and the chassis. I'll play around with the orientation in the printer to reduce the banding. There are also some blemishes on this one that I've addressed with filler but haven't yet sanded out. Click on the image to get all of the rivetey goodness. Link to post Share on other sites More sharing options...
lyneux Posted March 27, 2014 Share Posted March 27, 2014 Rabs, that's stunning. A B9Creator is definitely on my shopping list when I get back to the UK! Guy Link to post Share on other sites More sharing options...
Atso Posted March 30, 2014 Share Posted March 30, 2014 I just thought I'd add a couple of my better test prints on here (sorry for hijacking your thread Rabs). Not perfect yet, I've got some distortion on all the boiler fittings as well as the back of the J50 due to insufficient supports. However, I am encouraged by this and hope to have some usable prints in the not too distant future... A quick question though, all my prints exhibit a diagonal banding which is not in orientation to any of the plans. Can anyone explain why this is? Many thanks Link to post Share on other sites More sharing options...
Rabs Posted March 30, 2014 Author Share Posted March 30, 2014 Can you show a close up of the bands that you mean? It could be one of a few different things. Link to post Share on other sites More sharing options...
lyneux Posted March 30, 2014 Share Posted March 30, 2014 Looking nice Steve (except for the nasty kettles of course!). Link to post Share on other sites More sharing options...
Atso Posted March 30, 2014 Share Posted March 30, 2014 Hi Rabs, I've had a go at removing it using some 600 grit wet and dry. However you can still see this around the cab and bunker area - The model was printed vertically smokebox downwards. This picture also shows the deficiencies of the print nicely. More supports next time. Link to post Share on other sites More sharing options...
clarkis Posted January 19, 2015 Share Posted January 19, 2015 Almost a year later...any updates on this amazing thread? Clark Cone Link to post Share on other sites More sharing options...
Atso Posted May 10, 2015 Share Posted May 10, 2015 Almost a year later...any updates on this amazing thread? Clark Cone Hi Clark, I was unable to do much CAD or printing for several months but I'm not getting back into the swing of things. I'm playing with the settings on my B9 again and having been using an LNER J6 as my test subject. Where I am at the moment is shown below... I'm not 100% happy with these yet (though this one warranted a quick blow over with some black paint) but every print seems to be getting better... Link to post Share on other sites More sharing options...
Rabs Posted May 12, 2015 Author Share Posted May 12, 2015 Sadly nothing from me. All my (very limited) modelling time has been spent on building baseboards recently. I hope to get back into some rolling stock later this year. Link to post Share on other sites More sharing options...
Atso Posted November 30, 2016 Share Posted November 30, 2016 Hi all, Having played with the B9 some more I've finally gotten around to making a serious effort on my J6s. In the end they've been stretched slightly to fit the Farish J39 chassis but I've still got the original file with the 100% to scale version. Slightly cruel close up pictures, the model is only 57mm long! Other than removing the supports, no attempt has been made to remove the build lines. Link to post Share on other sites More sharing options...
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