Maintaining and Sharpening Your Ninja Stars

Okay, you’ve got your ninja star collection, you’ve learned how to throw them now what do you do to keep them in tip-top shape and maintain their edge.

Clean and Oil Your Throwing Stars

Unless you are a shuriken master you will invariably miss your target at some point and this often will leave dirt and grime on your stars.  Simply you can wipe them off with a towel lightly moistened with water or isopropyl alcohol.  Make sure to dry them completely as they are made of metal, stainless or not they could eventually rust.  Check the edges and if nicked or otherwise dulled you can go ahead and sharpen them with a stone (see below).  Otherwise, you can put a little 3 in 1 oil, WD-40, sewing machine oil, or another lubricant on them to keep them as good as new.  If you use an oil-based product just be sure and wipe them off before your next throwing session.  You don’t want your throwing stars slipping out of your hand and puncturing you, your brother, or any other living being.

Sharpen Throwing Stars

After some use your ninja stars are going to eventually dull.  Not to worry, with a little time and elbow grease you can get them back to their original state or even sharper depend on the star.  Do not under any circumstances use a grinder on your throwing stars!  You have been warned.  About 30-40 strokes at about a 20-25 degree angle with a sharpening stone will do the trick.  We recommend the quality whetstone kits listed below for sharpening your ninja stars.  There is a course stone to start your sharpening and a fine stone to hone it to a fine edge.

It’s relatively inexpensive and works great for a variety of weapons and knives you have lying around the house.  There are a lot of options out there and many of them will work just fine.  For most, a slight application of 3 and 1 oil will help in the process.  When finished with the sharpening stone clean your star as above and rinse off the sharpening stone as well and dry completely.

Our Picks for Sharpening Whetstones

Sharp Pebble Premium Whetstone Knife Sharpening Stone 2 Side Grit 1000/6000 Waterstone- Whetstone Knife Sharpener- NonSlip Bamboo Base & Angle Guide

 in stock
5 used from $29.24
Free shipping
as of April 11, 2021 7:30 pm


  • ✅ Superior Bundle: Your complete knife sharpening kit comes with double-sided (#1000/ #6000) premium quality whetstone, bamboo base for holding the stone, knife sharpening angle guide, a simple instruction manual & detailed ebook with lots of Tips & Tricks which will appeal at every skill level
  • ✅ Multipurpose Use: Our professional-grade knife sharpener stone is highly durable & long-lasting. This whetstone sharpener can sharp ANY BLADE out there, be it any kitchen knife set, chef knife, steak knife, sontoku knife, paring knife, sushi knife, cleaver knife, kitchen knives, Japanese knife, butcher knife, paring knife, BBQ knife, Hunting Knife, Pocket Knife, Scissor, Chisel, Blade, Straight Razor & it can even sharp an axe.
  • ✅ Safety: We understand the importance of safety when dealing with sharpening tools, your purchase comes with a Silicone base for holding the stone inside Non-Slip Bamboo base, this setup will ensure the stone is Fixed In One Place while sharpening. And knife sharpening angle guide allows you to maintain the Correct Angle and safely apply consistent pressure while sharpening the blade
  • ✅ Easy To Use: Our sharpening Waterstone kit is extremely User Friendly & easy to assemble. Knife sharpener stone uses Water for sharpening, so no need of expensive sharpening/honing oils and No Mess while sharpening & it can be easily cleaned using water
  • ✅ Premium Quality: Not all sharpening stones are created equal. We only import & source premium quality material for the manufacturing of our Whetstone which will provide superior cutting performance. No Compromise on quality. Get this simple yet unparalleled tool, used by everyone from stay at home moms to various professionals

Sharpening Stone Whetstone Set 2 Side Grit 400/1000 KEENBEST Kitchen Knife Sharpener Stone, Best Wet Stones for Sharping Knives Best Kit with Non-Slip Rubber Base

$15.99  in stock
as of April 11, 2021 7:30 pm


  • Two-side Sharpening Stone: Made with superior silicon carbide, the 400 grit side is often used for repairing the knives with big cutting edges, the 1000 grit side is mainly used for polishing the knives, also it’s suitable for any daily sharpening
  • Multipurpose Whetstone: One stone, unlimited professional knives. KEENBEST whetstone are compatible with all kinds of knives, including Chef knife, Hunting Knife, Pocket Knife,Japanese knife, butcher knife, paring knife, BBQ knife, Scissor, Chisel, Blade. Also works for hatchets, axes, carving and gardening tools
  • Handy Knife Sharpener: No oil needed, best to put the stone into water for 10-15 minutes before using and they are ready to use. You can always adding water on it while sharpening, with water the lubricating effect of grinding will be great and helps you to save strength
  • The Best Wet Stone: This grindstone made of white corundum is quicker in pulping and high in self sharpening. When the white corundum grindstone is grinded, the new edges and corners will come up very fast, and the self sharpening property is good. Therefore, the grinding wheel dressing is not very frequent, and the work efficiency can be improved a lot
  • Simple Knife Sharpening Kit: Come with one 7.0x2.2x1.1inch sharping stone, quality non-slip rubber base and a quick user guide of all the great tips for sharpening knives

Knife Sharpening Stone Kit, Finew Professional Whetstone Sharpener Stone Set, Premium 4 Side Grit 400/1000 3000/8000 Water Stone, Non-slip Bamboo Base, Flatting Stone, Angle Guide and Leather Strop

$49.97  in stock
1 used from $35.30
Free shipping
as of April 11, 2021 7:30 pm


  • ✅CHOOSE THE MOST COMPLETE KNIFE SHARPENING KIT TO SAVE YOUR TIME AND MONEY - All the sharpening tools you need are here: 400/1000 grit water stone to sharpen dull knives, 3000/8000 grit water stone to refine the edge, coarse Flattening Stone to keep your water stones flat all the time, Non-slip Bamboo Board to keep the stones safely in place while sharpening, Angle Guider holds the knife on the correct angle, Leather Strop to polish knife and removing burr.
  • ✅THIS VERSATILE KNIFE SHARPENING STONES CAN SHARPEN ALL KINDS OF FLAT BLADE AND LET THEM SHARP AGAIN - The 4 kind grit is accurate, choose the appropriate grit stone according to your knife blade. Whether expensive or cheap stainless steel kitchen knife, include Scissors, X-acto Blades, Pocket Knives, Hunting Knives, Chisel, Axe, Razor, Sword or even Machete, the knife sharpening stone set can sharpen it like new. You will get a great sense of accomplishment in this sharpening process!
  • ✅YOU CAN GET STARTED QUICKLY EVEN IF YOU HAVE NEVER SHARPEN ANY KNIFE - Whoever you are professional or amateur, the water stone set is the best for you. Compare to arkansas stones or slipstone grinders, our knife sharpener kit just need to been soaked in water for 10 minutes and no need expensive sharpening oil! Experiments prove water truly works better and makes clean-up easier! Sharpening your knife with the knife stone sharpener, you will be a professional sharpening master in a short time!
  • ✅BUILT TO LAST AND IDEAL GIFT FOR YOUR FAMILY OR FRIENDS - Our water sharpening stone are made from professional grade Corundum which is Aluminum Oxide, each piece water stone for sharpening was HAND STICKY not like other machine suppression, so our stone not only have a much more precise grit but also very durable. Besides, we REINFORCED bamboo base and package to prevent damage during transportation, THICKEN non-slip mat and leather strop to provide better friction.
  • ✅REAL 24/7 AFTER-SALES SERVICE AND 30 DAYS NO REASON TO RETURN SERVICE - Our whetstone sharpening stone was inspected by third inspection company under a durability and functionality test before shipped to you. We have been doing our best to make our products satisfy every customer, but there will always be some unexpected situations, so if you have any questions or dissatisfaction with our products, please feel free to contact us, we will definitely solve your problem in the first place!