Manufacture: Using two different methods to make a ring from a coin: Method #1, hammering to make a band from a quarter; Method #2,center punching and folding making a ring from a half-dollar.
Stock: (Suggested)  U.S. minted quarters. [Quarters dated before 1964 are 90% silver]
Tools & Equipment: Hammer, mallet, anvil, punch, file, Vernier caliper, mandrel, doming or dapping block, drill press, arbor press, and ring stretcher.
Instructions: Please make sure that you have read the lab work rules and regulations before you start working in the lab. It is important that you follow these instructions in order to obtain the maximum points allowed for this assignment.

Method #1

(Hammering to make a band)

Note: You will NOT be annealing. Polishing or grinding with a drill of any type. You may use a step drill bit in conjunction with drill press. You will be filing the interior of the ring. How many hits (approximately) did take to get to your desired width? How much time did it take? How many different ways did you find to determine the center? [Eye-balling. Measurement.] Which did you pick and why? How many different ways did you find to eliminate the center? [Drilling (hand or drill press)]. Punching (arbor or hydraulic press). What hammer(s) did you use? Why?

Grasping coin between thumb and index-finger roll coin across anvil (or steel surface) while striking the top of the coin with a small hammer. Over time this will flatten and widen the edge of the coin (as shown in video).

The assigned videos and the additional ones individually viewed by the group are to be used to foster discussion about the approaches and method adapted to perform the lab.  These methods should be annotations in the lab reports.

Modify until proper size and shape achieved.

 Method #2 (Center-punching)

Using a specially design half-dollar punch set, dapping block, arbor press, 20-ton shop press, and a ring stretcher to complete the Method #2. There is a Method #2a, if you chose to use the manual approach. 

Using method outlined in videos, punch out half doller.

Use either press – cut the center out of the coin.

Take your punched coin to the Doming block (see video for proper use) to put the initial curve.  Curve the coin with the dapping block. Finish you coin.  Method #2a - Insert curve punched coin on to mandrel to begin shaping.  Modify using mallet until proper size and shape achieved.

VIDEOS     Each video has its pros and cons. You will NOT be using every technique illustrated in the videos. Please NOTE which processes will not be used in the lab! In your lab report be prepared to discuss which process you emulated and why.

Suggested videos: [Please DO NOT stop with the suggested videos, add more.]

Method #1

How To Make a Ring with a Coin in home (AMAZING)

Make Rings out of Coins

How to make a coin ring, Half dollar ring, Silver dollar ring.

Method #2

Coin Ring Making Pro Tip! #10 How to use 5/8" punch in the self-centering coin punch

How To Make A Beautiful Coin Ring

Free Metalsmithing Techniques Video: Mandrel Use, Dapping, and Doming

Press & dapping using ring strecher

Your grade for this assignment is a combination of some general evaluation guidelines and some specific ones related to this assignment.

General Guidelines

1. How well the team worked together.
2. Whether the team members observed the safety rules, and other rules as explained in the Lab Work document.
3. Whether the team progress was on a uniform basis or most of the work was done at the end.
4. Whether the team followed the rules set for the lab work or not.
5. The quality of the report, presentation, and demonstration.

Specific Guidelines

TBA

Supplemental Videos:

Mandrel (wood and beating)
https://www.youtube.com/watch?v=Lo_wUYktz-U
Making a Coin Ring Series - Beginner Level

Punch & die (note method for center)
https://www.youtube.com/watch?v=ohHS9upIJY8
Making a Coin Ring Series - Intermediate Level

SE JT149RS Ring Stretcher
https://www.youtube.com/watch?v=_kxOFKnnwlk
Rathburn Ring Stretcher Instructional Video

HINTS:

:How will you find the center?

   Hammers

   Files

   Finding the Center

  Other Tools