Cults3D
Home
Zum Modell
Lazy-Tongs Snapping Dragon — extending scissor grabber
1
Downloads
0
Likes
0
Makes
An extending **Nuremberg-scissor (lazy-tongs)** grabber-reacher themed as a
snapping **dragon**. It has ONE moving mechanism and a single degree of freedom:
squeeze the **tail handle** and the shared scissor angle shrinks, so the **neck
telescopes forward** (~135 mm collapsed → ~213 mm extended) *and* the **head
snaps shut** at the same time. Reach and bite are the same motion — spread the
tails to collapse and re-open the mouth.
Snap-pin **assembled** build (no glue, no supports): two rails of scissor links
offset by one layer, pinned at every crossing with printed snap-rivets. Fully
parametric in OpenSCAD (reach, jaw close angle, bar/pin sizes).
**23 printed parts** — 10 links + 13 snap-pins, across 7 STLs.
**Print:** everything flat, no supports. Pins print standing (flange down, barb
up); PETG recommended for the pins, PLA fine for the rest. Print one
pin + one link as a fit coupon first.
**Assembly**
**Step 1 — belly rail.** Lay handle → 3 links → upper jaw in scissor order.
snapping **dragon**. It has ONE moving mechanism and a single degree of freedom:
squeeze the **tail handle** and the shared scissor angle shrinks, so the **neck
telescopes forward** (~135 mm collapsed → ~213 mm extended) *and* the **head
snaps shut** at the same time. Reach and bite are the same motion — spread the
tails to collapse and re-open the mouth.
Snap-pin **assembled** build (no glue, no supports): two rails of scissor links
offset by one layer, pinned at every crossing with printed snap-rivets. Fully
parametric in OpenSCAD (reach, jaw close angle, bar/pin sizes).
**23 printed parts** — 10 links + 13 snap-pins, across 7 STLs.
**Print:** everything flat, no supports. Pins print standing (flange down, barb
up); PETG recommended for the pins, PLA fine for the rest. Print one
pin + one link as a fit coupon first.
**Assembly**
**Step 1 — belly rail.** Lay handle → 3 links → upper jaw in scissor order.
Hast du dieses Modell gedruckt? Einloggen und dein Make teilen!
Melde dich an, um einen Kommentar zu hinterlassen
AnmeldenNoch keine Kommentare – sei der Erste!
