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💎 Polish Like a Pro, Shine Like a Star!
TechDiamondTools Diamond Polishing Compound is a premium, USA-made, oil-based paste featuring a 50% diamond powder concentration at 3000 grit (3-6 microns). Designed for industrial and DIY use, it delivers ultra-smooth, precise polishing on metals, glass, gemstones, ceramics, and more, restoring surfaces to a flawless mirror finish with scientific-grade efficiency.









| ASIN | B07S1Q6DGT |
| Best Sellers Rank | #7,877 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Abrasive Finishing Compounds |
| Brand | TechDiamondTools |
| Brand Name | TechDiamondTools |
| Compatible Material | Stainless,aluminum,wood,acrylic,glass,plastic,industrial,metal,steel,leather |
| Customer Reviews | 4.5 out of 5 stars 239 Reviews |
| Grit Material | Diamond |
| Grit Material Type | Diamond |
| Grit Number | 3000 |
| Grit Type | Fine |
| Included Components | plastic syringehig |
| Item Dimensions | 7 x 4 x 0.75 inches |
| Item Weight | 5 Grams |
| Item dimensions L x W x H | 7 x 4 x 0.75 inches |
| Manufacturer | TechDiamondTools |
| Material | Diamond |
| Material Type | Diamond |
| Part Number | DP-3000H |
| UPC | 818510015786 |
| Unit Count | 1.0 Count |
J**E
Smooth Finish, Impressive Results
This 3,000 grit diamond polishing compound completely exceeded my expectations. I’ve been using it on a variety of surfaces—marble, metal, and even a couple of resin pendants I cast recently—and the results are consistently excellent. The paste has a nice consistency that's easy to spread evenly, and it doesn’t dry out or gum up like some cheaper compounds I’ve tried before. What really impressed me is how high the concentration of diamond powder feels. It’s aggressive enough to make a noticeable difference quickly but still refined enough to give a smooth, glassy finish. I used just a dab on a felt wheel and brought a dull piece of silver back to a mirror shine. Same with a glass cabochon—it went from cloudy to crystal-clear in minutes. It’s also nice knowing it’s made in the USA. There’s a sense of quality control here that shows up in how reliable and consistent it is across different jobs. Whether I’m polishing jewelry or sharpening chisels, this compound gets the job done cleanly and quickly. A little goes a long way, so it's also a good value. I'll definitely be keeping a jar of this on hand in my shop.
A**M
Great for knife sharpening
Noticeable improvement on blades
9**G
Great value and works beautifully
I have been using this product for about six weeks now on my strops. This stuff is long lasting and its impact is consistent on all my knives. It is a great value for the money and I will be buying more. I use it in modest amounts and it goes aThis stuff is long lasting and its impact is consistent on all my knives. It is a great value for the money and I will be buying more. I use it in modest amounts and it goes a long way.
N**R
Worked great on my Tesla Model 3 backup camera lens!
My backup lens on the Tesla Model 3 has a very soft lens cover and gives a distorted view. After using glass cleaners, micro fiber cloths, other cleaners for exterior cameras I read about using a 2,000 or 3,000 grit polish. In amazon I did my reviews and came across TechDiamond. The polish was the amount I needed and the reviews were good so I tried it. I planned to use a buffer but first I used a microfiber cloth with a pea size amount of the paste. I hand buffed the lens with the paste and it worked! I have not used a buffer only a few minutes of carefully hand buffing. I was so surprised and pleased that this worked and was so easy!!
M**Y
Works well.
It's a very good extra fine polishing paste. The only downside I had was the syringe it comes in. I'd rather it came in a small squeeze tube or even better, a can or small pot. You also need to warm it up to make it flow from the syringe. Other than that, it works well for what I needed it for.
J**P
High quality for honing the knives I keep sharp.
I use this on my leather strop that is the last step when I sharpen knives. It is just right for polishing the cutting edge and it lasts a long time before it needs to be replaced. Work much better than the stick rubbing compound I used to use.
S**M
Very effective stropping and polishing compound!
I am a serious craft knife sharpener, to the delight of family, friends, and if course my own knife collection. I use this TechDiamond 3,000 paste on a leather strop in my guided angle sharpening system, following sharpening with Venev bonded diamond stones. The strop work ensures no sharpening burr, refines the edge, and results in what I term a 'working quality' near mirror edge. It meets my craftsmanship standards, looks pretty damn good, and impresses knife guys and novices alike. This order was a repeat but to be load my chairside large paddle strop for casual touch-ups. Excellent product, exemplary value, highly recommended!
J**.
fastest strop work I have ever had.
Your strop has never done this good of a job removing that bur on any steel.
R**R
I think it works.
I think it does something? Can't really tell. Any time I've tried stropping a knife after sharpening in the past it's only made it get noticeably duller. This diamond compound seemed to make the bevel a little more shiny without dulling the knife, which is the best result I've ever gotten from stropping a knife after watching about 1000 videos on how to do it. Yaay me.
T**S
Good
Very good. Works as intended.
M**O
DÉÇU, j'imaginais mieux
Ja m'attendais tellement bien de cette façon de polir, peut-être mon besoin qui ne se prête pas à son usage, mais pour mon besoin, j'ai acheté 2 barres de métal enduite de poudre de diamant, une FINE et l'autre GROSSIÈRE et j'adore travailler avec ces outils et pour mon besoin, elles me dureront DES ANNÉES
Trustpilot
1 month ago
3 weeks ago