DIY Channel cutting blade

DIY Channel cutting blade

Double Xacto
From the MAKE Flickr photo pool

Ranjit needed a specific tool, so he made it –

…a double-bladed knife for cutting channels in tape. (Thanks to the tape goddess for encouragement!) I’m gonna try to use it to make flexible circuit boards from copper tape.

Construction method: jam two blades in one handle. (Use a jeweler’s screwdriver to wedge the handle slot open to accomodate them.)

Surely such a thing existed already, but I couldn’t find one. I imagined a super-deluxe double-knife that architects would use, with a thumbscrew for adjusting the inter-blade distance and everything.

This could likely also be used carving peel-able areas on 1oz copper board for no-etch circuits – my new invention… on Flickr

6 thoughts on “DIY Channel cutting blade

  1. Pelrun says:

    Be very careful with any tool that has doubled blades like this; if you slip and cut yourself by accident the resulting wound is very nasty and will be very difficult to heal properly.

    Since I occasionally get cuts from a single blade even when I’m being careful, I’ll steer clear of this mod.

  2. MrCrumley says:

    These knives do exists. They’re basically the same as this DIY version – a spacer in between two blades. Stained glass makers use them to cut out patterns since they account for the lead in between the glass pieces.

    Search for “stained glass pattern knife” if you’re interested.

  3. Chris says:

    They used to put 2 blades into a Stanley knife separated with a matchstick.

    The resulting slash injuries to opponents proved very difficult to sew up and left horrific scars.

Comments are closed.

Discuss this article with the rest of the community on our Discord server!


Maker Faire Bay Area 2023 - Mare Island, CA

Escape to an island of imagination + innovation as Maker Faire Bay Area returns for its 15th iteration!

Buy Tickets today! SAVE 15% and lock-in your preferred date(s).