typo: A platter is a tray (a plate). A plater is someone who plate metals.

I won't fix mainline/prusa typo in the source code, only the text.

src/libslic3r/PrintConfig.cpp

@@ -610,7 +610,7 @@ void PrintConfigDef::init_fff_params()
     def->label = L("Allow only one skirt loop");
     def->category = OptionCategory::output;
     def->tooltip = L("When using 'Complete individual objects', the default behavior is to draw the skirt around each object."
-        " if you prefer to have only one skirt for the whole plater, use this option.");
+        " if you prefer to have only one skirt for the whole platter, use this option.");
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionBool(false));
 
@@ -726,7 +726,7 @@ void PrintConfigDef::init_fff_params()
     def = this->add("duplicate_distance", coFloat);
     def->label = L("Default distance between objects");
     def->category = OptionCategory::output;
-    def->tooltip = L("Default distance used for the auto-arrange feature of the plater.\nSet to 0 to use the last value instead.");
+    def->tooltip = L("Default distance used for the auto-arrange feature of the platter.\nSet to 0 to use the last value instead.");
     def->sidetext = L("mm");
     def->aliases = { "multiply_distance" };
     def->min = 0;
@@ -1171,7 +1171,7 @@ void PrintConfigDef::init_fff_params()
     def->tooltip = L("Set this to the clearance radius around your extruder. "
                    "If the extruder is not centered, choose the largest value for safety. "
                    "This setting is used to check for collisions and to display the graphical preview "
-                   "in the plater."
+                   "in the platter."
                    "\nSet zero to disable clearance checking.");
     def->sidetext = L("mm");
     def->min = 0;
@@ -4822,7 +4822,7 @@ void PrintConfigDef::init_fff_params()
     def = this->add("z_step", coFloat);
     def->label = L("Z full step");
     def->tooltip = L("Set this to the height moved when your Z motor (or equivalent) turns one step."
-                    "If your motor needs 200 steps to move your head/plater by 1mm, this field should be 1/200 = 0.005."
+                    "If your motor needs 200 steps to move your head/platter by 1mm, this field should be 1/200 = 0.005."
                     "\nNote that the gcode will write the z values with 6 digits after the dot if z_step is set (it's 3 digits if it's disabled)."
                     "\nSet zero to disable.");
     def->cli = "z-step=f";

src/slic3r/GUI/GUI_App.cpp

@@ -1908,7 +1908,7 @@ void GUI_App::add_config_menu(wxMenuBar *menu)
                 title += " - " + _L("Language selection");
                 wxMessageDialog dialog(nullptr,
                     _L("Switching the language will trigger application restart.\n"
-                        "You will lose content of the plater.") + "\n\n" +
+                        "You will lose content of the platter.") + "\n\n" +
                     _L("Do you want to proceed?"),
                     title,
                     wxICON_QUESTION | wxOK | wxCANCEL);

src/slic3r/GUI/KBShortcutsDialog.cpp

@@ -66,13 +66,13 @@ void KBShortcutsDialog::fill_shortcuts()
     if (wxGetApp().is_editor()) {
         Shortcuts commands_shortcuts = {
             // File
-            { ctrl + "N", L("New project, clear plater") },
+            { ctrl + "N", L("New project, clear platter") },
-            { ctrl + "O", L("Open project STL/OBJ/AMF/3MF with config, clear plater") },
+            { ctrl + "O", L("Open project STL/OBJ/AMF/3MF with config, clear platter") },
             { ctrl + "S", L("Save project (3mf)") },
             { ctrl + alt + "S", L("Save project as (3mf)") },
             { ctrl + "R", L("(Re)slice") },
             // File>Import
-            { ctrl + "I", L("Import STL/OBJ/AMF/3MF without config, keep plater") },
+            { ctrl + "I", L("Import STL/OBJ/AMF/3MF without config, keep platter") },
             { ctrl + "L", L("Import Config from ini/amf/3mf/gcode") },
             { ctrl + alt + "L", L("Load Config from ini/amf/3mf/gcode and merge") },
             // File>Export
@@ -91,9 +91,9 @@ void KBShortcutsDialog::fill_shortcuts()
             { ctrl + "C", L("Copy to clipboard") },
             { ctrl + "V", L("Paste from clipboard") },
 #ifdef __APPLE__
-            { ctrl + "Shift+" + "R", L("Reload plater from disk") },
+            { ctrl + "Shift+" + "R", L("Reload platter from disk") },
 #else
-            { "F5", L("Reload plater from disk") },
+            { "F5", L("Reload platter from disk") },
 #endif // __APPLE__
             { ctrl + "F", L("Search") },
             // Window
@@ -169,7 +169,7 @@ void KBShortcutsDialog::fill_shortcuts()
 #endif // ENABLE_RENDER_PICKING_PASS
         };
 
-        m_full_shortcuts.push_back({ { _L("Plater"), "" }, plater_shortcuts });
+        m_full_shortcuts.push_back({ { _L("Platter"), "" }, plater_shortcuts });
 
         Shortcuts gizmos_shortcuts = {
             { ctrl, L("All gizmos: Rotate - left mouse button; Pan - right mouse button") },
@@ -187,9 +187,9 @@ void KBShortcutsDialog::fill_shortcuts()
         Shortcuts commands_shortcuts = {
             { ctrl + "O", L("Open a G-code file") },
 #ifdef __APPLE__
-            { ctrl + "Shift+" + "R", L("Reload the plater from disk") },
+            { ctrl + "Shift+" + "R", L("Reload the platter from disk") },
 #else
-            { "F5", L("Reload plater from disk") },
+            { "F5", L("Reload platter from disk") },
 #endif // __APPLE__
         };
 

src/slic3r/GUI/MainFrame.cpp

@@ -428,7 +428,7 @@ void MainFrame::update_layout()
     {
         //layout
         m_plater->Reparent(m_tabpanel);
-        m_tabpanel->InsertPage(0, m_plater, _L("Plater"));
+        m_tabpanel->InsertPage(0, m_plater, _L("Platter"));
         m_main_sizer->Add(m_tabpanel, 1, wxEXPAND);
         update_icon();
         // show
@@ -467,7 +467,7 @@ void MainFrame::update_layout()
         m_tabpanel->Hide();
         m_main_sizer->Add(m_tabpanel, 1, wxEXPAND);
         m_plater_page = new wxPanel(m_tabpanel);
-        m_tabpanel->InsertPage(0, m_plater_page, _L("Plater")); // empty panel just for Plater tab */
+        m_tabpanel->InsertPage(0, m_plater_page, _L("Platter")); // empty panel just for Plater tab */
         update_icon();
         m_plater->Show();
         break;

src/slic3r/GUI/Preferences.cpp

@@ -138,7 +138,7 @@ void PreferencesDialog::build()
 		def_combobox_auto_switch_preview.gui_flags = "show_value";
 		def_combobox_auto_switch_preview.enum_values.push_back(_u8L("Don't switch"));
 		def_combobox_auto_switch_preview.enum_values.push_back(_u8L("Switch when possible"));
-		def_combobox_auto_switch_preview.enum_values.push_back(_u8L("Only if on plater"));
+		def_combobox_auto_switch_preview.enum_values.push_back(_u8L("Only if on platter"));
 		def_combobox_auto_switch_preview.enum_values.push_back(_u8L("Only when GCode is ready"));
 		if (app_config->get("auto_switch_preview") == "0")
 			def_combobox_auto_switch_preview.set_default_value(new ConfigOptionStrings{ def_combobox_auto_switch_preview.enum_values[0] });
@@ -803,7 +803,7 @@ void PreferencesDialog::create_settings_mode_widget(wxNotebook* tabs)
 #ifndef WIN32
 		+ " " + unstable_warning
 #endif
-		+ "\n* " + _L("Old layout: all windows are in the application, settings are on the top tab bar and the plater choice in on the bottom of the plater view.")
+		+ "\n* " + _L("Old layout: all windows are in the application, settings are on the top tab bar and the platter choice in on the bottom of the platter view.")
 		+ "\n* " + _L("Settings button: all windows are in the application, no tabs: you have to clic on settings gears to switch to settings tabs.")
 		+ "\n* " + _L("Settings window: settings are displayed in their own window. You have to clic on settings gears to show the settings window.")
 	);