The Smell of Molten Projects in the Morning

Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.

MPCNC Drag Knife Holder: Showing More Blade

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Attempting to cut laminated cardstock decks for the Homage Tektronix Circuit Computer required a bit more blade extension than my LM12UU holder made available:

Drag Knife - LM12UU ground shaft - assembled
Drag Knife – LM12UU ground shaft – assembled

Shortening the 12 mm shaft wasn’t going to happen, so I knocked a little bit off the blade holder to give the knurled lock ring slightly more travel:

Drag Knife Holder - shortening stop
Drag Knife Holder – shortening stop

The lathe cutoff blade is a bit to the right of the new cut, but you get the general idea: not a whole lot of clearance in there.

Comments

2 responses to “MPCNC Drag Knife Holder: Showing More Blade”

  1. MPCNC Drag Knife Holder: Lock Screw | The Smell of Molten Projects in the Morning

    […] While calibrating the MPCNC’s probe camera offset for the drag knife holder, this happened: […]

  2. Drag Knife Blade Extension | The Smell of Molten Projects in the Morning

    […] Scribbling the blade across a scrap of laminated yellow card stock (about 0.4 mm thick) showed it didn’t cut all the way through the bottom plastic layer, even with the spring mashed flat. […]