From e9875f57a9cdcd32d6244dd38200078f5c2a905c Mon Sep 17 00:00:00 2001 From: Vojtech Bubnik Date: Wed, 24 Feb 2021 18:08:32 +0100 Subject: [PATCH] Fix of Unnecessary raft on models with large perimeter but nothing inside. #430 Don't fill in the holes in 1st layer of the raft. The user may apply a higher raft_expansion if one wants a better 1st layer adhesion. --- src/libslic3r/SupportMaterial.cpp | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/src/libslic3r/SupportMaterial.cpp b/src/libslic3r/SupportMaterial.cpp index b77d81219..cbe9ffb1b 100644 --- a/src/libslic3r/SupportMaterial.cpp +++ b/src/libslic3r/SupportMaterial.cpp @@ -1371,8 +1371,13 @@ PrintObjectSupportMaterial::MyLayersPtr PrintObjectSupportMaterial::top_contact_ if (layer_id == 0) { // This is the first object layer, so the object is being printed on a raft and // we're here just to get the object footprint for the raft. - // We only consider contours and discard holes to get a more continuous raft. +#if 0 + // The following line was filling excessive holes in the raft, see GH #430 overhang_polygons = collect_slices_outer(layer); +#else + // Don't fill in the holes. The user may apply a higher raft_expansion if one wants a better 1st layer adhesion. + overhang_polygons = to_polygons(layer.lslices); +#endif // Expand for better stability. contact_polygons = offset(overhang_polygons, scaled(m_object_config->raft_expansion.value)); } else {