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Where are your products made?

At DiamondCore® Tools, we pride ourselves on manufacturing and assembling the highest quality pottery tools available for the exacting artist in the ceramic arts industry.

Our materials are sourced both domestically and internationally — with only the best natural and man-made materials selected for final production. DiamondCore® Tools partners with multiple suppliers for its raw materials, Due to high demand and trademark protection, this information is proprietary.

We're proud to say our tools are made in the USA. Final manufacturing of carving tools, trimming tools, sticky products, and almost every other item offered for sale is done in the United States at our production center in El Cajon, California. Final assembly, packaging, and order fulfillment are also located on-site at our facility in California.

Customer service is performed across multiple time zones in order to accommodate national and international customer inquiries.

Thank you for your continued patronage and support of DiamondCore® Tools!


Do you ship internationally?

Yes, we ship most places worldwide. Once you have selected and added the products you would like to the shopping cart the shipping cost will be calculated for you based on what you order. Your country may charge customs import fees or taxes, which unfortunately we are unable to determine for you in advance.


Which of your tools is best for sgraffito?

It depends on your style and desired end result. For fine line sgraffito detailing on dryer clay our Diamond Stylus Tools are a great fit. Our Straight Blade Carving Tools are designed for more shallow carving and sgraffito. The back side of the blade on some of our Curved Blade Carvers can also be used for sgraffito.


What is the difference between the Curved and Straight Bladed Carving Tools?

Our Curved Blade Carvers are designed to be used primarily for leatherhard carving, both deep and shallow. The Straight Blade Carvers can be used for more shallow carving or sgraffito.


What is the Trimming Spinner used for? 

It’s purpose is to make lines and divisions, to stabilize the trimming hand, and to prevent the collapse of thin-walled pots.


How do I use the Trimming Spinner?

Place it in the center of the pot while trimming. One finger of the left hand spins in the divot on the Trimming Spinner while the trimming hand is stabilized on the left hand. This allows you to disperse downward pressure and prevent collapsing of thin-walled pots. It also has convenient division marks for dividing pots in the ½, ⅓,¼, 1/5ths etc.


How does the Shrink Ruler work?

See HOW TO USE YOUR SHRINK RULER website instructions on the Shrink Ruler product page.



How does the StickyBat work? 

The StickyBat is a rigid plastic bat covered with a rubbery material to keep your pieces in place for trimming. You can draw centering rings directly on it with a ballpoint pen to help you know where to place the pot. Once you have centered your pot, use light downward pressure to stabilize. It is intended for low profile items rather than tall pieces.


Which grit should I buy?

It depends on what your desired end result is. If you are wanting heavy removal of glaze or clay, then 60 grit would be a good fit. For general purpose or leveling of a pot 120 grit. For smoothing you may use 240 to 400 grit. For polishing you may use 800 to 1800 and for shine on porcelain you may use 3000+ grit.


What is the difference between the Silicon Carbide Grinding Disc and the Diamond Grinding Disc?

The Diamond Grit is 7000 on the hardness scale and Silicon Carbide(SC) has a 2400 hardness rating. The Diamond Grinding Disc (DGD) is a metal disc with diamonds held on by metal. The SC is fabric-backed and held on with glue. Both DGD and SC are adhesive backed. DGD is available in an 8” or 12” diameter with 60, 120, and 240 grit options. SC is 12” in diameter and is offered in 50 or 80 grit only. DGD lasts 10 to 100 times longer, and is 3 to 10 times faster, so less fatigue, smoother finish, and you can remove higher cone rating quicker.


How does the Diamond Grinding Disc attach to a pottery wheel? 

The double sided adhesive on the back of the Diamond Grinding Disc sticks permanently to a clean and dry (plastic) bat.


What is the best way to clean a Diamond Grinding Disc?

Rinse the Disc with water and use a gentle toothbrush if needed.


Do I need to be concerned with the material I grind off with the use of the Diamond Grinding Disc?

Yes, make sure to remove all clay on the wheel head and in the splash pan before using the Diamond Grinding Disc. After use of the Grinding Disc make sure you thoroughly and carefully clean out all the debris on the wheel head and splash pan and dispose of it in the trash.


Do I need to use water with your Diamond Grinding and Sanding products?

Yes, we recommend using water, high speed, and gentle pressure to preserve the diamonds and to keep the dust  down.


Do the Diamond Rotary Tools fit any Dremel?

Yes, our Diamond Rotary Tools fit most ordinary Dremels. All major brands of Rotary tools use the same standard ⅛” (3mm) shaft size.  Collet sets are available for rotary tools with smaller shaft size such as our Polishing Bullet sets (2.3mm).


How do I decide if a Diamond Hole Drill or Diamond Rotary Tool is best?  

If you need a fresh hole, the Hole Drills are far better suited. If you are just cleaning out an existing hole to widen it or remove glaze, then the DiamondCore Rotary Tools will work best.


What is the CINK used for? 

Our CINK allows you to recycle clay by filtering and separating water and clay. It acts as a portable rinse station for tools and prevents clay from getting into your plumbing and clogging your drain. 


How does the CINK work?

It’s a portable rinsing station that can be plugged into a normal electrical outlet. You start by putting in 11-12 gallons of water. It filters out and captures clay as water is recirculated. It senses when the faucet is turned on which causes the pump to circulate water until the faucet is turned off. 

Additional Info:

Both buckets are filled with water when you start out. About 1/4 of the larger bucket will empty into the next filter so that one will remain about ¾ full. The larger chunks of clay will collect in the first bucket. In the second bucket there is a 70 micron filter to filter out debris. The sediment will settle at the bottom of the larger second bucket. The water then goes through one more 1 micron screen filter before coming out of the faucet again. You can keep cycling it around for a few months before cleaning it, depending on how often you are using the CINK. Additionally you can put a few drops of chlorine in the water as needed to keep the water purity levels where you want them to be.


Can your tools be used for Polymer Clay?

Yes, our Carvers can be used for Polymer Clay, if desired.


Do you have a printed catalogue you could send me?

Unfortunately at this time we do not have a catalog available.