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Nj N1067 7.1mm Finescale testbed - there may be shorties


UnfinishedKit

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Terrible photo but I’m getting closer to working point blades after a few wrong turns. 
 

what I’ve learnt is that there’s no way to get 3D printed stainless steel clean enough to silver braze to or at least no way I was going to. Much more sensible to drill through and braze the rail to a brass rod. Lots more fettling to do. 
 

I do think I’m onto something with this high silver content jewelers brazing paste. Perhaps unsurprisingly it makes a much stronger  joint than lead free electronic solder if you do it right. Right is very clean and 715C. IMG_9493.thumb.jpeg.260585f5086acc8a83cd10f51ba505fd.jpeg

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UnfinishedKit

this photo is a little better. The major learning from this run out is that AIA should have printed the railhead a little high so I could grind it back and get a decent surface. 1.2mm instead of 1mm should do the trick 
 

 

IMG_9503.thumb.jpeg.8159810e425acebbfe3c9ff4a65d5067.jpeg

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