diff --git a/app/src/main/java/com/codigoparallevar/minicards/PartInstantiator.java b/app/src/main/java/com/codigoparallevar/minicards/PartInstantiator.java
index 87804c7..4338730 100644
--- a/app/src/main/java/com/codigoparallevar/minicards/PartInstantiator.java
+++ b/app/src/main/java/com/codigoparallevar/minicards/PartInstantiator.java
@@ -7,9 +7,9 @@ import com.codigoparallevar.minicards.types.Tuple2;
 public abstract class PartInstantiator {
     protected abstract Part instantiate(PartGrid grid, Tuple2<Integer, Integer> center);
 
-    public Part build(CanvasView canvasView) {
-        Tuple2<Integer, Integer> center = canvasView.getCenteredOn();
+    public Part build(PartGrid grid) {
+        Tuple2<Integer, Integer> center = grid.getCenteredOn();
 
-        return instantiate(canvasView, center);
+        return instantiate(grid, center);
     }
 }
diff --git a/app/src/main/java/com/codigoparallevar/minicards/types/PartGrid.java b/app/src/main/java/com/codigoparallevar/minicards/types/PartGrid.java
index 2502b0c..ad098be 100644
--- a/app/src/main/java/com/codigoparallevar/minicards/types/PartGrid.java
+++ b/app/src/main/java/com/codigoparallevar/minicards/types/PartGrid.java
@@ -1,10 +1,11 @@
 package com.codigoparallevar.minicards.types;
 
-import com.codigoparallevar.minicards.types.connectors.input.InputConnector;
 import com.codigoparallevar.minicards.types.connectors.input.SignalInputConnector;
 
 public interface PartGrid {
     Selectable getPartOn(int x, int y);
 
     SignalInputConnector getSignalInputConnectorOn(int x, int y);
+
+    Tuple2<Integer,Integer> getCenteredOn();
 }