G+_Mark Messiha Posted July 5, 2015 Share Posted July 5, 2015 Was in the presence of quad goodness so I felt obligated to post here. A cheaply 3d printed motor mount (not sure if that's the technical term) took a crap on it. Got to watch it through the pictured head mounted VR thingy. All this stuff belongs to my brother-in-law so I have no idea what's going on. Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted July 5, 2015 Share Posted July 5, 2015 somewhat off topic......but 3D printing is NOT strong, typically. Layer separation is common, and print direction are KEY to a good part vs a 'working' part. (looks like 25% infill, what I typically use. Bumping that up to 80% won't give you even a linear increase in strength.) The cohesion between layers is lacking; significantly. Of course making a structurally sound part vs 'print-ability' (ability to actually print it, lowering support material, etc) all factor in and are a compromise. BUT this is the fun and 'hacking' aspect of 3D printing. Link to comment Share on other sites More sharing options...
G+_Mark Messiha Posted July 5, 2015 Author Share Posted July 5, 2015 Interesting. I've thought of trying 3d printing soonish in part to help make custom stuff for his quads. So you're saying I'm only going to get a marginal increase using more material? Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted July 5, 2015 Share Posted July 5, 2015 Yup. Kind of. You will gain more strength, but its not linear. Add 10% infill != 10% more strength. (probably closer to 5-7% increase.) The most strength is perpendicular to the layers. Think about the forces the part will go through and make sure the layers are 90^ out. Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted July 5, 2015 Share Posted July 5, 2015 You can also add more solid perimeters. I also add a solid infill layer every 9 layers. I use an odd # so the solid layer is 90^ from the last. Link to comment Share on other sites More sharing options...
G+_Mark Messiha Posted July 6, 2015 Author Share Posted July 6, 2015 I was told abs. Link to comment Share on other sites More sharing options...
G+_Mark Messiha Posted July 7, 2015 Author Share Posted July 7, 2015 Well unfortunately neither of us have a printer yet, this was a part from eBay I believe. Link to comment Share on other sites More sharing options...
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