diff --git a/src/cuttemplate.h b/src/cuttemplate.h
index 2fbfabf1..af370eb4 100644
--- a/src/cuttemplate.h
+++ b/src/cuttemplate.h
@@ -8,7 +8,7 @@
 enum class CutTemplate
 {
     Quad = 0,
-    //Octagon,
+    Triangle,
     Count
 };
 
@@ -19,6 +19,8 @@ QString CutTemplateToDispName(CutTemplate cutTemplate)                      \
     switch (cutTemplate) {                                                  \
         case CutTemplate::Quad:                                             \
             return QObject::tr("Quad");                                     \
+        case CutTemplate::Triangle:                                         \
+            return QObject::tr("Triangle");                                 \
         default:                                                            \
             return "";                                                      \
     }                                                                       \
@@ -35,6 +37,12 @@ std::vector<QVector2D> CutTemplateToPoints(CutTemplate cutTemplate)         \
                 { 1.0,  1.0},                                               \
                 {-1.0,  1.0},                                               \
             };                                                              \
+        case CutTemplate::Triangle:                                         \
+            return {                                                        \
+                {0,     -1.0},                                              \
+                {1.732,  0},                                                \
+                {0,      1.0},                                              \
+            };                                                              \
         default:                                                            \
             return {                                                        \
                 {-1.0, -1.0},                                               \
diff --git a/src/partwidget.cpp b/src/partwidget.cpp
index 1eddaf2e..7a7f740f 100644
--- a/src/partwidget.cpp
+++ b/src/partwidget.cpp
@@ -498,7 +498,7 @@ void PartWidget::showCutTemplateSettingPopup(const QPoint &pos)
     for (size_t i = 0; i < (size_t)CutTemplate::Count; ++i) {
         CutTemplate cutTemplate = (CutTemplate)i;
         QPushButton *button = new QPushButton(CutTemplateToDispName(cutTemplate));
-        connect(button, &QPushButton::clicked, [&]() {
+        connect(button, &QPushButton::clicked, [cutTemplate, &cutDocument, this]() {
             auto points = CutTemplateToPoints(cutTemplate);
             cutDocument.fromCutTemplate(points);
             emit setPartCutTemplate(m_partId, points);