From 7758332406c5b7792257460e7ab276bd28c1d474 Mon Sep 17 00:00:00 2001
From: SoftFever <softfeverever@gmail.com>
Date: Wed, 23 Sep 2026 14:55:19 +0800
Subject: [PATCH] Restore the Bambu Lab bed-model offset so stock BambuStudio
 meshes line up

---
 src/slic3r/GUI/3DBed.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/slic3r/GUI/3DBed.cpp b/src/slic3r/GUI/3DBed.cpp
index b69ce2bdf8..3d7db8eb32 100644
--- a/src/slic3r/GUI/3DBed.cpp
+++ b/src/slic3r/GUI/3DBed.cpp
@@ -625,6 +625,12 @@ void Bed3D::update_model_offset()
     shift(2) = -0.03;
     Vec3d* model_offset_ptr = const_cast<Vec3d*>(&m_model_offset);
     *model_offset_ptr = shift;
+    //BBS: TODO: hack for current stl for BBL printer
+    if (std::string::npos != m_model_filename.find("bbl-3dp-"))
+    {
+        (*model_offset_ptr)(0) -= m_bed_shape[2].x() / 2.0f;
+        (*model_offset_ptr)(1) -= m_bed_shape[2].y() / 2.0f;
+    }
     (*model_offset_ptr)(2) = -0.41 + GROUND_Z;
 
     // update extended bounding box