Remix - Package Opener Knife Handle - X-Acto No.11 Blade Holder

I like to keep a razor knife handy for opening boxes and other types of packages received in the mail. This little razor cutter, made with an X-Acto No.11 type blade, is just the thing for slitting tape on boxes or slicing open a thick envelope. When not in use I keep it in a 3D printed pen/pencil cup. My original version works well for it's intended purpose, but I thought it could use a few improvements.

The optional cap can be placed over the knife tip for carrying, or stored on the handle end.

Assembly and Use

Blade insert is easier with this improved version: Hold the blade with pliers and insert it into the handle; be sure to push it in until only about 3mm of the blade tip is showing. DO NOT attempt to insert the blade by hand - it is a tight fit and you will cut yourself.

When the blade become dull, it can be easily removed with pliers and replaced.

Print Instructions

Print in PLA using the 3mf files provided, otherwise :

• 0.2mm layer height
• 2 perimeters
• 15% rectilinear infill
• Output options : Complete individual objects

Note that the 3mf file is set up to print both the handle and pne in one print session, but one at a time.

CAD

The OnShape 3D CAD files for this are here :

https://cad.onshape.com/documents/8b41124f3b376acb759a9964/w/789eae9bea27c52f9cbfec86/e/1835830fbb20c640f0dd3e3a?renderMode=0&uiState=65d69eeaf4591c349defd619

• Added a cap
• Enlarged slot for blade to make insert easier
• Increased handle thickness to improve printability