Knife Assistant

by ThePlanetMike, published

Knife Assistant by ThePlanetMike Jan 18, 2012
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7948Views 1662Downloads Found in Kitchen & Dining


For me, using a knife is a two-handed job. I use the Knife Assistant to provide a flat surface on the back of almost any knife to push against it more comfortably. It also keeps the knife more controllably vertically aligned for nice straight slices.

Want me to design a 3D printable assistive technology for you? Contact me!

Print Settings






Solid or nearly solid so that it is strong


Updated 6/20/12: Knife Assistant (Repaired).stl is cleaned up a little and should print better on more finicky machines.

Slip on to back of knife near handle. Hold knife handle firmly and push straight down on Knife Assistant to chop easily through most vegetables.

This is scaled for larger knives. For smaller knives, try scaling it down a little. Always be sure your print is solid and strong before trying it on a knife!

Knife Assistant may slide depending on size of blade and scale of print. Be careful!

Never use the Knife Assistant on or near the sharp end of the knife. It may slip off and cause injury!

Never put on sharp side of blade. Only put on back as pictured.

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Had exactly this thought. Do you have the source files? What program'd you design this in? I had an idea to make an ergonomic version.

How does this help people with a disability?

I have limited gripping ability and no movement in my wrists, so being able to push down on the back of the blade comfortably rather than using the knife as a lever makes all the difference.

That is cool, first thing i thought when i saw it was to prevent the blade from touching the tabletop when laying the knife aside... might just print one for that purpose :D

I made it ovale for larger hand area, works great... Thanks.

Great idea! I'm gonna print one for my wife so she can cut pumpkin herself! :-)