Support and FAQ
For more information on changing blades and a detailed assembly walkthrough, check out the video below.
Product Information
Disclaimer
By purchasing from our website you agree and certify the following terms - Rivery Manufacturing or RiveryMFG.com and Sayers CO., LLC will not be liable for any damage or injury as a result of the use or misuse of any of our products. You certify that you are of legal age and legally allowed to purchase, import, and own our products. It is the responsibility of the end user and purchaser to handle the knife properly. The Zero is a cutting tool and must be treated as such and used responsibly. Utility Knives should be handled responsibly. Serious injury or death could
occur if misused. Please do not attempt to open or use your knife if you are unable to do it properly, or while under the influence of drugs or alcohol.
Return Policy
At Rivery Manufacturing , we want you to be completely satisfied with your purchase. We offer a 7-day return policy from the date of delivery on all unused and unopened products. We do not offer a Try & Buy program, any knife used prior to return will incur a 10% Restocking Fee. All Warranty claims and returns can be initiated via our contact portal. Please fill out the page with information regarding your request, and prepare by purchasing a return label. If the knife was in anyway defective out of the box or the order was incomplete or incorrect due to a mistake on our end your label can be refunded during our inspection and replacement process.
Conditions for Returns:
To be eligible for a return, your item must be unused, in the same condition that you received it, and in the original packaging. Any item not in its original condition, damaged, or missing parts for reasons not due to our workmanship may not be eligible for a refund or will incur a restocking fee based upon the items condition.
Any Lost or Destroyed package can be claimed & refunded with our claims service. Contact us through our portal & we will get the refund process started. All domestic mail claims are processed in 20 days, and international mail claims are processed in 40. In the case your claimed package arrives after a refund is issued you will be responsible for claim re-payment or a return.
Return Process:
To initiate a return, please contact us through our contact portal with your order number and details. We will respond as soon as possible with instructions on how to proceed.
Refunds:
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. At this point we will determine your refund amount and process it as soon as possible.
When approved, your refund will be processed, and a credit will automatically be applied to your original method of payment in 1-3 business days. There is a Non-Refundable transaction fee applied to all refunds.
Exchanges:
If you need to exchange an item, please contact us via our contact portal. We will provide you with instructions on how to proceed with your return.
Shipping Costs:
Shipping costs for returns are non-refundable. Any item not returned under our manufacturing warranty will require a shipping label purchased by the customer. Any knife found to be defective out of box will be covered under our manufacturer warranty.
Damaged & Defective items
If you receive a damaged or defective item, please contact us immediately. The item is covered under our Manufacturer warranty
Contact Us:
If you have any questions about our return policy, please contact us. Our team is ready to assist you.
International Shipping & Return Policy
International Shipping & Returns
Rivery MFG. does not accept international returns or exchanges. International shipments will be triple checked before leaving our manufacturing facility in Tennessee.
Import Duties
All international shipments are shipped from our shop via USPS international mail services. Every package will be considered DDU or Delivery Duties Unpaid. You will have to pay an import duty tax based on your local region to receive our shipments. By purchasing from our website you agree to these terms.
Warranty Information
The Zero knife will always be serviced or replaced if needed by our customers. We made our knife to be easily maintained and repaired by our customers however If your knife experiences a failure due to mishandling or extreme use, we can effect a repair or replacement based on severity. The fee for most simple repairs and servicing is just the cost of shipping plus the at cost value of any parts needed for the repair. For more complex cases a higher fee may be incurred. Once you have communicated your issues with our team and determined the level of care required, ship your knife to us & we will take it from there. If the failure is due to a manufacturing defect, the repair or replacement is free. We understand some people may have trouble understanding our mechanism so any knife sent in for servicing or re-assembly that are free of damage are only charged the initial cost of shipping. For all international warranty needs please reach out to our customer support team or your domestic dealer for warranty assistance & instructions. We reserve the right to refuse servicing on a case by case basis. Any knock off or counterfeit products sent in for servicing will be discarded
Find common Zero questions & answers
Zero Resources
How do I change the blade of the Zero?
The only tools needed for a blade change are your hands and the knife.
Hold down the carriage when removing the blade and pull from the top side of the blade to shear the magnetic force holding it in place.
Please take a look at the picture at the top of the page.
What blades are compatible with the Zero-G?
- Workpro SK5 (61 mm)
- Dewalt Carbide Edge
- Rapid Edge Serrated
- Milwaukee
- Titan
- Berkling SK2h Black
- Jet SK5 Titanium Coated
- Selected generic SK5 blades
- STANLEY Utility Knife Blades (11-800L)
What oil should I use for my Zero?
We recommend using KPL lightweight oil, but any lightweight knife oil or mineral oil should work.
As the viscosity of the oil increases, the fidget factor may be reduced. In other words, heavier oils can dampen the clicking action, but the knife should still function properly. If you notice that the carriage becomes sluggish, remove some of the excess oil and test the function again.
- Lubrication should only be performed when necessary or after a deep clean.
- Lubrication points include both rail mating surfaces, the walls of the carriage, the pin, and the key.
Can I use the Zero if I am left-handed?
Of course. You can use both the Zero and the Zero-G if you're left handed.
Here is how: https://www.youtube.com/watch?v=jb8MkIOLJdo
Does the slider on the Zero & Zero-G return on its own?
No, the slider is manual and does not automatically return on its own. Magnets help guide it back into place, and over time it may move back slightly due to gravity or motion as the knife breaks in.
My Zero is wearing at the tip. Is this normal?
Yes, this is normal and nothing to worry about.
Slight wear at the tip can occur due to natural variations in SK5 steel. This type of wear is expected and does not affect the performance or functionality of the blade.
My blade is stuck. I can't get the blade to pop out. What should I do?
If the blade is interfacing with the interior wall of your knife, you can take another utility blade and carefully insert it into the mouth of your zero, but below the blade that is getting stuck.
From this point, slide your lid forward very carefully. Your spare blade will act as a ramp, guiding your shorter blade out over the knife's mouth.
Zero weight & dimensions
The Zero weighs 2.099oz or 59.51 grams.
Closed: 68mm length
Open: 88mm length
These dimensions apply for all Zero patterns/finishes.
Find common Zero-G questions & answers
Zero-G Resources
How do I change the blade of the Zero-G?
The only tools needed for a blade change are your hands and the knife. If you've changed blades on the Zero knife, the process is almost the same.
Hold down the carriage when removing the blade and pull from the top side of the blade to shear the magnetic force holding it in place.
The Zero-G carriage is winged and runs on its own rail, so the carriage is held in place when removing the blade. You can apply pressure to the carriage in the same way as with the Zero knife using your finger for added security.
What blades are compatible with the Zero-G?
- Workpro SK5 (61 mm)
- Dewalt Carbide Edge
- Rapid Edge Serrated
- Milwaukee
- Titan
- Berkling SK2h Black
- Jet SK5 Titanium Coated
- Selected generic SK5 blades
- STANLEY Utility Knife Blades (11-800L)
- FISKARS
- US Made Blades
What's the tool that comes with the Zero-G and how do I use it?
The tool included with your Zero-G is the Clip Removal Tool. Using this tool, you can remove the flush pivot pocket clip on your Zero-G.
We don't recommend using it outside of maybe a deep clean or removing your clip for a new color, replacement, or repair!
If you plan to change the blade, please refer to our informational videos first to save yourself time and money.
What oil should I use for my Zero-G?
We recommend using KPL lightweight oil, but any lightweight knife oil or mineral oil should work.
As the viscosity of the oil increases, the fidget factor may be reduced. In other words, heavier oils can dampen the clicking action, but the knife should still function properly. If you notice that the carriage becomes sluggish, remove some of the excess oil and test the function again.
- Lubrication should only be performed when necessary or after a deep clean.
- Lubrication points include both rail mating surfaces, the walls of the carriage, the pin, and the key.
Can I use the Zero-G if I am left-handed?
Of course. You can use both the Zero and the Zero-G if you're left handed.
Here is how: https://www.youtube.com/watch?v=jb8MkIOLJdo
Why does my Zero-G randomly go into blade-change mode when I’m using it?
What you’re experiencing isn’t a defect. It’s related to how the mechanism interacts with very tight tolerances and the lid design.
On some units, the lid has a slightly more aggressive chamfer. Combined with the longer slider on the Smooth Operator, this can make it easier to unintentionally trigger the blade-change function when forward pressure is applied, especially if the slider doesn’t fully return on its own and is pushed forward again.
This can feel like the knife is “randomly” entering blade-change mode, but it’s actually reacting to subtle pressure differences during use.
A few key things to keep in mind:
- The knife is designed for a forward → backward motion, not repeated forward tapping.
- If the slider doesn’t fully return automatically, manually bringing it back into place is normal.
- Small tolerance differences (we’re talking hair-width precision) can slightly change how the mechanism feels from unit to unit.
Does the slider on the Zero & Zero-G return on its own?
No, the slider is manual and does not automatically return on its own. Magnets help guide it back into place, and over time it may move back slightly due to gravity or motion as the knife breaks in.
My blade is stuck. I can't get the blade to pop out. What should I do?
If the blade is interfacing with the interior wall of your knife, you can take another utility blade and carefully insert it into the mouth of your zero, but below the blade that is getting stuck.
From this point, slide your lid forward very carefully. Your spare blade will act as a ramp, guiding your shorter blade out over the knife's mouth.
Zero-G weight & dimensions
The Zero-G Original Pattern weighs 2.575oz or 73.0 grams.
The Zero-G Smooth Operator weighs 2.54oz or 72.0 grams
Closed: 94mm length
Open: 135.5mm length
These dimensions apply for all Zero-G patterns/finishes.