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How to set the type of pla patter between the raft and object


johnboyman
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Posted · How to set the type of pla patter between the raft and object

Hello all. I am making an object with fusion 360 and cura and its working very well. The raft starts out using a zig zag pattern then finishes of with a straight tight fine pattern that makes a solid surface before it starts but that pattern sticks to my object way to much and is hard to remove. Is there a way to set that final pattern on the raft? thanks

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    Posted · How to set the type of pla patter between the raft and object

    I don't know Fusion 360, nor your design and requirements, so it's hard to give good advice.

     

    But in general, if you have special support requirements, you can always design them in the CAD-model itself. Then you have full control. I often do this because my models are tiny, and the supports are hard to reach: there is no room to get in with a knife or plier.

     

    See the example below: these are self-hanging supports, and easy to remove. The slot where they are hanging in, is only 5mm wide. If printed in PET, I need the supports, otherwise it wouldn't bridge. If printed in PLA, I could bridge this gap without supports, but I want tighter tolerances, since a ruler has to slide in this opening later on. The ribs on top of the support allow a smaller gap between support and model, without them fusing together: usually the gap is between 0.2 and 0.4mm for my designs. The supports extend a bit longer than the area they need to support: then I can knock them down from above with a screw driver. The bonding of the supports to the walls is based on stringing of the filament: it works, and makes removal really easy.

     

    Similarly, you can invent all sorts of support methods, and optimise them for your specific purpose.

     

    supporttest12b.thumb.png.504e11c4d360abd18960d889c271f2a4.png

     

    supporttest12c.thumb.png.a4bbb089d43486b97df974e68e645196.png

     

    supporttest12d.thumb.png.928a8b2050f412c67de15eea58791d75.png

     

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