Clean up and smooth-out your coin rings’ rough cut edges!
There’s a lot of information available today on how to fold and reduce coins to make coin rings, but there’s almost no information on HOW to actually go about and professionally finish and polish the thinner, non-reeded cut edge of your coin rings.
This side of the coin ring was once the inner portion of the coin prior to the forging process, and it can be very difficult to get a smooth-looking finish due to the sharp and uneven edges that are present.
Rough and uneven coin ring edge BEFORE using the Finishing & Polishing Mandrel Set
An easy solution to this problem is to utilize a Set of what are called “Finishing and Polishing Mandrels”; which will give you that high-quality smooth finish and shine to the NON-REEDED edges of your coin rings by getting rid of those unsightly, uneven, sharp edges WITHOUT using nail buffing files, having to sand by hand, using steel round files, or even deburring tools.
This Polishing Mandrel Set will finish and polish any coin ring from an approximate US size of 5, up to a US size of 14.
The Kit comes with a German-made nickel plated steel shank complete with 3 interchangeable Tapered Mandrel Cones in varying sizes:
Small — (fits ring sizes of approx. 5-8),
Medium — (fits ring sizes of approx. 8.5-11), and
Large — (fits ring sizes of approx. 11-14).
The advantage to using the finishing and polishing mandrels is that as the ring is spinning, the power drill acts like a small lathe, providing a much more uniform finish to the ring than can be achieved with either hand-sanding, using a nail buffing file, a steel round-file, or even a small rotary tool such as a Dremel.
*** TO WATCH A VIDEO TUTORIAL ON THIS PROCESS, WATCH THE VIDEO BELOW ***
1.) Determine which size Polishing Tapered Mandrel fits your completed coin ring, and slide the coin ring on to it.
2.) Place the Mandrel bit into your power drill and tighten.
3.) Adjust the coin ring until it’s well-balanced with no “wobbling” on the Mandrel with your power drill on, and then expand the Mandrel by tightening the Stainless Steel Phillips head set screw at the top which holds the coin ring securely in place.
4.) Begin on the outer edge of the coin ring with the coarser 100 Grit sandpaper and work your way around to the inner edge of the coin ring; making sure that ONLY the corner tip of the sandpaper is making contact with the unfinished inner, top, and outer edges of your coin ring to prevent damage to the rings’ detail.
5.) Continue to work the inner, top, and outer edges of the NON-REEDED side using the finer Grits of sandpaper as you go; finishing with “0000” Steel Wool. You can also use the steel wool and LIGHTLY go over the inner and the outer detail of the coin ring before you either polish it with a jeweler’s cloth or after you’ve put a patina (antique-looking) finish on the ring.
6.) The final step is to use a jeweler’s cloth to both buff and finish-polish your coin ring.
Your ring will now have a highly-smoothed, rounded, and polished edge on the NON-REEDED side that is not often seen on coin rings!
Smooth and even coin ring edge AFTER using the Finishing & Polishing Mandrel Set
Another example below:
* Click on the photo to enlarge to see the differences in the edges of this Walking Liberty Half Dollar *
Other materials needed: a power drill, 3 different grits of sandpaper (150 Grit, 400 Grit, and 600 Grit ideally), some “0000” Steel Wool, and a jeweler’s polishing cloth to complete this process. Those items can be purchased from Amazon.com; at a big box store like Home Depot, or any local hardware store inexpensively.
*** SAFETY FIRST ***
– Always wear safety glasses and work gloves.
– Always use caution when working with any power tools and electricity.
– Keep fingers, long hair, and loose clothing away from any fast moving parts.