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Hi Michelle - please let us know how we can be of help - what specifically did you not care for on the 10558 Smart Retract - we are assuming the actual Smart Retract functionality? In which case the Auto-Retract or Manual versions would be better for your application -- please let us know as we want you to have the correct tool for the correct job - thank you!

Hi Kristine! Thank you again for your order off our website! The 10558 is ambidextrous-- you would need to flip the blade over to make it left hand friendly. :) You can see how to do this here: Slice 10558 Smart-Retractable Utility Knife
Thank you! //SLICE TEAM//

Hello:
Thank you for taking the time to review our tools. 
We wanted to follow up on a few things:
Handle style: It looks like you’ve tried the Smart-Retracting Utility Knife. Automatic retraction is preferred by many safety managers, but we also make a Manual Utility Knife, with four preset cutting positions. We’d be happy to send you a complimentary Manual Utility Knife to try out.
Cutting ability: Our blades cut most of the same materials as traditional blades, and are successfully installed in thousands of manufacturing facilities around the globe—they’re used by more than half the Fortune 1000. While our main motive is safety, we don’t sacrifice efficiency or quality in our design.
We find that most issues can be addressed with better training on how to use the tools and what to expect from the blades. With traditional blades—which are dangerously oversharpened—many people have come to expect a blade that is far sharper than necessary. More information on that here: Why Are Slice Ceramic Blades Initially Less Sharp Than Metal Blades?
If we can learn a little more about your application, we’re confident we can get you cutting safely and efficiently. Sometimes a different blade tip is needed; sometimes the user is inadvertently holding the handle incorrectly. If you could provide a detailed account of the material you’re cutting, or, even better, a photo or video of the cutting, we can help you pinpoint the issue and find a solution. Thank you!

Cher Daniel, 
Thank you for taking the time to review our tools. We wanted to follow up on a few things: 
Handle style: It looks like you’ve tried the Smart-Retracting Utility Knife. Automatic retraction is preferred by many safety managers, but we also make a Manual Utility Knife, with four preset cutting positions. We’d be happy to send you a complimentary Manual Utility Knife to try out.
Cutting ability: Our blades cut most of the same materials as traditional blades, and are successfully installed in thousands of manufacturing facilities around the globe—they’re used by more than half the Fortune 1000. While our main motive is safety, we don’t sacrifice efficiency or quality in our design.
We find that most issues can be addressed with better training on how to use the tools and what to expect from the blades. With traditional blades—which are dangerously oversharpened—many people have come to expect a blade that is far sharper than necessary. More information on that here: Why Are Slice Ceramic Blades Initially Less Sharp Than Metal Blades? 
If we can learn a little more about your application, we’re confident we can get you cutting safely and efficiently. Sometimes a different blade tip is needed; sometimes the user is inadvertently holding the handle incorrectly. If you could provide a detailed account of the material you’re cutting, or, even better, a photo or video of the cutting, we can help you pinpoint the issue and find a solution. Thank you!
+++Nous nous excusons pour les erreurs de traduction:
Merci d'avoir pris le temps de nous écrire. Nous voulions répondre sur quelques points:
Style de poignée: Il semble que vous ayez essayé le couteau utilitaire avec retrait intelligent. La rétraction automatique est préférée par de nombreux qui cherchent un couteau de sécurité, mais nous fabriquons également un couteau utilitaire manuel, avec quatre positions de coupe prédéfinies. Nous serions heureux de vous envoyer un couteau utilitaire manuel gratuit à essayer.
Coupures: Nos lames coupent la plupart des mêmes matériaux que les lames traditionnelles, et sont installées avec succès dans des milliers d'usines dans le monde entier - elles sont utilisées par plus de la moitié des entreprises Fortune 1000. Notre objectif principal est la sécurité, mais nous assurons que nous ne sacrifions pas l'efficacité ou la qualité de nos outils.
Nous constatons que la plupart des problèmes peuvent être résolus avec plus d’information au sujet de la façon d'utiliser les outils et à quoi s'attendre des lames. Avec des lames traditionnelles - qui sont dangereusement affûtées - beaucoup de gens s'attendent à une lame beaucoup plus fine que nécessaire. Plus d'informations à ce sujet ici: Why Are Slice Ceramic Blades Initially Less Sharp Than Metal Blades?
Si nous pouvons en apprendre un peu plus sur votre application, nous sommes confiants que nous pouvons vous aider à couper efficacement et en toute sécurité. Parfois, une pointe de lame différente est nécessaire; parfois, l'utilisateur tient la poignée de manière incorrecte. Si vous pouviez fournir un compte rendu détaillé du matériel que vous coupez ou, mieux encore, une photo ou une vidéo de la coupe, nous pouvons vous aider à cerner le problème et à trouver une solution. Nous vous remercions!