There's a moderate chance you'll find a working Diamond Core Tools promo code right now. On this page you'll find 30 codes ranked by what's actually worked at checkout. The best one to try is SUPERBOGO26.
How often Diamond Core Tools codes work
Each bar is one week of real shopper results: the greener the bar, the better the chance a code worked that week. Paler bars carry limited data.
| Discount | Last used | Performance | Promo code |
|---|---|---|---|
| Buy One, Get One FREE on select items | 6mo ago | 54% | HOLIDAYBOGO25 |
| 25% off one-time use per customer | 2w ago | 54% | WELCOME25 |
| 20% off | 3w ago | CCWEST26 | |
| Buy 1, get 1 free | 2w ago | 33% | TYBOGO26 |
| 1 FREE | 7mo ago | — | EARLYBOGO25 |
| 10% off | 7mo ago | — | CLAYSHARECON25 |
| FREE tool personalization | 3mo ago | — | FREEXO4U |
| Buy 1, Get 1 FREE on DiamondCoretools | 11mo ago | — | HOLIDAYBOGO24 |
| 20% off Glaze Fountain Classic and Deluxe | 1y+ ago | — | GLAZE20 |
| $100 purchase earns a Free Tri It Set | 11mo ago | — | CLAYSHARE4 |
| 15% OFF ALL TOOLS | 7mo ago | — | CCWEST24 |
| 20% off your next purchase | 9mo ago | — | DCTWELCOMEBCK25 |
| 10% off your next order | 9mo ago | — | CLAYSHARECON24 |
| 20% off | 11mo ago | — | DCTNEWCUST20 |
| 50% off laser-engraved wood-handle tools | 11mo ago | — | FREEXOXO |
| 25% off | 1y+ ago | — | DCTWELCOMEBACK25 |
| Buy 3, get 4th FREE - Tools | 1y+ ago | — | MAY4BWU24 |
| 50% off Accessories Set 2 with $199 purchase | 1y+ ago | — | HOLIDAY23 |
| 24% Off eGift Cards | 1y+ ago | — | GIFTCARD24 |
| BOGO Free + Free Shipping | 10mo ago | — | HOLIDAYBOGO23 |
| 20% off The CINK | 1y+ ago | — | CINK20 |
| 25% off | 1y+ ago | — | DCTNEWCUST25 |
| 23% off | 1y+ ago | — | BOGOSUMMER23 |
| 23% off | 1y+ ago | — | GIFTCARD23 |
| 22% off | 1y+ ago | — | HOLIDAYBOGO22 |
| 4% off | 1y+ ago | — | XFREEP4 |
| 22% off | 1y+ ago | — | BOGOSUMMER22 |
| 22% off | 1y+ ago | — | SUMMER22 |
| 20% off | 1y+ ago | — | DCTGC2021 |
About this page
Introducing a more honest way to find coupon codes
Every code has a history, and we track it
Codes fail for boring reasons: they expire, they only cover one category, they only apply to a first order. Calling any of them "verified" would be a guess dressed up as a fact. We publish the chance instead, built from checkout data and shopper answers, and we track it over time.
Likely not workingMixed resultsHigh chance of working
You'll find one of these charts on every code we list, tracking how it has performed over time.
When there is nothing worth trying, we say so
When we don't think there is a working code for a store, we say so right at the top of the page, before you spend time scrolling.
Good chance right now78%
Nothing likely right now9%
A code that works at breakfast can be dead by lunch. Nobody can promise otherwise, so we don't stamp anything here as "working" or "verified". We tell you the chance of a code working instead, based on real shopper feedback and data, and when the chance is poor we say that out loud.

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