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After SLS printing any internal spaces retain the un-fused but packed powder that was in the bed. I am hoping to add channels as wire raceways internal to the part.

Any experiences with this - is it worth the trouble?

More specifically, any recommendations for "flexible-auger" type tools to clean out around the bends? The residual powder is of a consistency where I expect an appropriately shaped wire could dislodge it.

(Concept, this is polypropylene. Scale: raceways are currently 1.5mm - 2mm in diameter.)

enter image description here

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  • $\begingroup$ have you tried compressed air? $\endgroup$
    – Trish
    Oct 22 '20 at 17:05
  • $\begingroup$ That was my first thought too. $\endgroup$
    – fred_dot_u
    Oct 22 '20 at 20:56
  • $\begingroup$ Have not yet tried a print of this. Having previous prints I am pretty sure compression of the powder and friction would prevent compressed air from working. $\endgroup$
    – nate
    Oct 23 '20 at 20:28

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