















Imanishi Natural Whetstones | Omura / Sasaguchi Rough Stone
Generally we recommend synthetic whetstones for the lower (rougher) grits, this however is an exception. After testing these for in-store sharpening for the last 3 months we've been amazed at the quality. So much so we bought every one Imanishi had.
These stones are amazing value, outlasting 3-6 synthetics of similar grit. We've been using for chip repair, thinning and a bevel set. Grit does vary being natural, and it will get finer as you work the (sticky) slurry but we are using in place of 400-800 grit stones.
A short soak is recommended but don't leave permanently in water. saying that we did leave one in water to test and it held up better than any rough natural we've used in the past. Flattening is required on arrival.
We were sold these stones as Omura but think the stone is actually Sasaguchi. Either way it's a very good value natural.
- Imanishi Natural Whetstone
- Omura/Sasaguchi Rough Stone
- Mined in Kyusyu, Japan
- Whetstone Size: From circa 227 x 92 x 62mm to circa 240 x 103 x 72mm
- Whetstone Weight: From circa 2.5kg to circa 3.9kgs
- Rough Sawn: Flattening required on arrival
- We cannot ship this internationally, due to weight
- Natural Sharpening Stone / Whetstone

Japanese Sharpening Stones (Whetstones)
Generally we recommend synthetic whetstones for the lower (rougher) grits, this however is an exception. After testing these for in-store sharpening for the last 3 months we've been amazed at the quality. So much so we bought every one Imanishi had.
These stones are amazing value, outlasting 3-6 synthetics of similar grit. We've been using for chip repair, thinning and a bevel set. Grit does vary being natural, and it will get finer as you work the (sticky) slurry but we are using in place of 400-800 grit stones.
Godammit, ProTooling are the best.
-
A great knife from a good friend of mine. Good knife, hansom chef, the perfect marriage.
-
Chef Rang - Master, Celebrity, Legend
The Japanese are masters of their art and ProTooling are always really welcoming and down-to-earth, willing to spend time finding a knife to suit you.
-
Lennox Hastie - Firedoor
ProTooling offers stunning service & a wide range of amazing quality products. The staff are super knowledgeable, kind & patient, making the selection process very easy. They genuinely care about their products & service, it’s why I keep going back.
-
Anjali - Sous Chef, Saint Peter
ProTooling are unrivalled in product knowledge, knife diversity and above all a burning desire to provide true quality craftsmanship. It truly inspires us as chefs, cooks and craftsman alike to reflect on our own depth of knowledge, skills and industry awareness when surrounded by such informed professionals like ProTooling.
-
Oscar Solomon - GRECA Executive Chef
The team at ProTooling are master at their craft and incredibly kind and helpful while do so! Every time I drop my knives off, I feel a sense of relief as I know how well looked after they are. Love this place and the team - thanks for everything you do ProTooling!
-
Ismat - Recipe Developer / Photo Chef
I have built a very strong relationship with ProTooling. Paul (the owner) has a very good attitude and that reflects in the products he stands behind. He provides only the best quality through all of the good relationships he has been able to grow throughout the years with the top craftsmen in Japan. He and his staff are amazing. Keep up the good work.
-
Nicola - Chef / Knife Connoisseur
Trusted Specialists
Unparalleled Support & Warranty
Trusted by the World's Best Chefs
Complimentary Shipping
Australia $125+ (AusPost Insured)
Worldwide $650+ (DHL & AusPost)
Local Fulfilment
All products are in (Sydney) stock
Insurance Included: no added charges