Starting the Top
Grab the top blank you marked earlier and mount and turn it between centers as you did with the base blank. After you raise the dovetailed tenon, mount the top in your scroll chuck. Now turn the top down so it fits smoothly within the cylinder (Figure 10). It should move freely. Sand the face and sides of the top and set it aside for the moment.
Mount some wood to be used as a jam chuck onto your scroll chuck or on a faceplate and turn its face flat.
With your calipers, measure the diameter of the top and mark the face of the jam chuck. Cut a recess in the jam chuck so that the top fits tightly in place (Figure 11 and Figure 12).
With the top mounted in the jam chuck, turn a tenon, forming it into a shape that can be easily grasped and handled (Figure 13). Do the final finish sanding and set the top aside.
Take a moment to carefully enlarge the recess in the jam chuck to fit the tenon on the face of the base that you had set aside earlier (Figure 14).
Turn off the dovetail tenon that was used for mounting in the scroll chuck, leaving the surface flat (Figure 15). Finish sand the base and unmount it from the chuck.
You can leave the surface of the wood bare or use an oil finish as mentioned earlier. Don’t use vegetable or salad oil since they will likely turn rancid with time.
Using the Patty Press
1. Prepare your ground meat mixture using your favorite recipe.
2. Place the cylinder loosely onto the tenon on the base.
3. Spoon meat mixture into cylinder. You may need to adjust the amount to achieve desired patty thickness.
4. Using a twisting motion with the top, compress the meat into the press.
5. Using a twisting motion to break surface tension, lift and remove the top.
6. Remove the cylinder from the base, leaving the patty in place.
7. The patty will usually adhere to the base, which will allow you to move it to the platter. Turn the base over and use a knife to break the tension, thereby dropping the patty.
8. Use wax paper or equivalent to separate the patties.
9. Repeat steps 2 through 8 until the meat mixture is gone.
10. Put ‘em on the grill and enjoy.
Now that you have mastered using a jam chuck by making this simple project, you can take your turning to the next level by using the technique in a variety of turning situations. Happy turning!