diff --git a/backend/app/models.py b/backend/app/models.py
index 09bd60e..96a80e2 100644
--- a/backend/app/models.py
+++ b/backend/app/models.py
@@ -1,8 +1,7 @@
-from sqlalchemy import Column, Integer, String, Date, ForeignKey, JSON, Interval, DateTime, Boolean
+from sqlalchemy import Column, Integer, String, Date, ForeignKey, JSON, DateTime, Boolean
 from sqlalchemy.orm import relationship
 from .database import Base
-from datetime import datetime, timedelta
-import uuid
+from datetime import datetime
 
 
 class Shipment(Base):
@@ -118,6 +117,7 @@ class Puck(Base):
     dewar_id = Column(Integer, ForeignKey('dewars.id'))
     dewar = relationship("Dewar", back_populates="pucks")
     samples = relationship("Sample", back_populates="puck")
+    events = relationship("PuckEvent", back_populates="puck")
 
 
 class Sample(Base):
@@ -168,13 +168,13 @@ class SampleEvent(Base):
 
     sample = relationship("Sample", back_populates="events")
 
-#class PuckEvent(Base):
-#    __tablename__ = "sample_events"
-#
-#    id = Column(Integer, primary_key=True, index=True)
-#    puck_id = Column(Integer, ForeignKey('puck.id'))
-#    tell_position = Column(String(255), nullable=True)
-#    event_type = Column(String(255), index=True)
-#    timestamp = Column(DateTime, default=datetime.utcnow)
-#
-#    sample = relationship("Sample", back_populates="events")
+class PuckEvent(Base):
+    __tablename__ = "puck_events"
+
+    id = Column(Integer, primary_key=True, index=True)
+    puck_id = Column(Integer, ForeignKey('pucks.id'))
+    tell_position = Column(String(255), nullable=True)
+    event_type = Column(String(255), index=True)
+    timestamp = Column(DateTime, default=datetime.utcnow)
+
+    puck = relationship("Puck", back_populates="events")
\ No newline at end of file
diff --git a/backend/app/routers/puck.py b/backend/app/routers/puck.py
index 91e7c39..1c4e623 100644
--- a/backend/app/routers/puck.py
+++ b/backend/app/routers/puck.py
@@ -2,9 +2,10 @@ from fastapi import APIRouter, HTTPException, status, Depends
 from sqlalchemy.orm import Session
 from typing import List
 import uuid
-from app.schemas import Puck as PuckSchema, PuckCreate, PuckUpdate
-from app.models import Puck as PuckModel, Sample as SampleModel
+from app.schemas import Puck as PuckSchema, PuckCreate, PuckUpdate, SetTellPosition, PuckEventCreate
+from app.models import Puck as PuckModel, Sample as SampleModel, PuckEvent as PuckEventModel
 from app.dependencies import get_db
+from datetime import datetime
 
 router = APIRouter()
 
@@ -61,3 +62,43 @@ async def delete_puck(puck_id: str, db: Session = Depends(get_db)):
     db.delete(puck)
     db.commit()
     return
+
+@router.put("/{puck_id}/tell_position", status_code=status.HTTP_200_OK)
+async def set_tell_position(
+        puck_id: int,
+        request: SetTellPosition,
+        db: Session = Depends(get_db)
+):
+    # Get the requested tell_position
+    tell_position = request.tell_position
+
+    # Define valid positions
+    valid_positions = [f"{letter}{num}" for letter in "ABCDEF" for num in range(1, 6)] + ["null", None]
+
+    # Validate tell_position
+    if tell_position not in valid_positions:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=f"Invalid tell_position value. Must be one of {valid_positions}.",
+        )
+
+    # Set the correct tell_position logic
+    actual_position = None if tell_position in ["null", None] else tell_position
+
+    # Create a new PuckEvent (always a new event, even with null/None)
+    new_puck_event = PuckEventModel(
+        puck_id=puck_id,
+        tell_position=actual_position,  # Null for disassociation, else the valid position
+        event_type="tell_position_set",  # Example event type
+        timestamp=datetime.utcnow(),
+    )
+    db.add(new_puck_event)
+    db.commit()
+    db.refresh(new_puck_event)
+
+    # Send the response
+    return {
+        "message": "New tell position event created successfully",
+        "tell_position": new_puck_event.tell_position,
+        "timestamp": new_puck_event.timestamp,
+    }
diff --git a/backend/app/schemas.py b/backend/app/schemas.py
index bee12de..ee39525 100644
--- a/backend/app/schemas.py
+++ b/backend/app/schemas.py
@@ -306,4 +306,14 @@ class SlotSchema(BaseModel):
     local_contact: Optional[str]
 
     class Config:
-        from_attributes = True
\ No newline at end of file
+        from_attributes = True
+
+class PuckEventCreate(BaseModel):
+    event_type: str
+
+class SetTellPosition(BaseModel):
+    tell_position: str = Field(
+        ...,
+        pattern="^[A-F][1-5]$|^null$|^None$",  # Use 'pattern' instead of 'regex'
+        description="Valid values are A1-A5, B1-B5, ..., F1-F5, or null."
+    )