Example DIY Floating Supports in Blender
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A couple examples of DIY supports, in blue.
The "floating" supports at the top are fins which are spaced from the vertical pink wall by about .21mm. They are roughly .35mm below the horizontal solid object surface above, and about 1.5mm apart from each other. The 0.21mm horizontal spacing allows the slicer, in this case, to avoid printing them as a single piece with the main object's body, but it's close enough that the filament curl and bulge allowed the supports to lightly touch and join the object body, but be readily removed with minimal bonding and marking.
Here you can see it is one support, with an Array Modifier (in Blender) to duplicate it.
- Note: I tend to join my supports to the final object with a boolean union.
