Envelopener-style origami paper cutter

This Envelopener-style paper cutter accepts a Swann & Morton 10A blades, rather than the Xacto #11 used in the zero_o's design. Xacto blades are ~0.5mm thick and have a compound grind, while 10A scalpel blades are ~0.4mm thick and have a scandi grind. As a result, this remix behaves a little more like the original Envelopener.

Recommended layer height is 0.15mm. 100% infill is also recommended, as the model will print with noticeable hull lines, benefits from the extra stiffness, and doesn't have much volume anyway. I tested this model in Prusament PC Blend, but other materials should work without much issue.

The following parts are required:

• 1 x Swann & Morton 10A blade (or equivalent)

• 1 x Cutter_top_SM10A.stl

• 1 x Cutter_bottom_SM10A.stl

• 2 x Cutter_spring.stl

Or:

• 1 x Swann & Morton 10A blade (or equivalent)

• 1 x Cutter_kit_SM10A.3mf

Assembly is identical to the Xacto version. To assemble, flex the springs slightly and insert the ends into the long slot along the edge of the top/bottom part. Once installed, the spring should bow out from the part. Place the blade onto the lug on the bottom part, with the edge facing in towards the middle of the part. Drop the top into the bottom part and slide the top into the dovetails until the holes on the corner line up.