From the Loftsmith Workshop

Stocking holder clamp for mantels 15-90 mm thick

Hangs a Christmas stocking from the mantel without a single nail or sticky hook. The arm clamps over the top edge and a green knurled screw tightens underneath, then the hook curls up to hold the loop. Set it to your mantel's thickness and reach.

3 parts · 39 g · 34 × 115 × 109 mm

by Loftsmith Workshop

Red clamp with a curled hook gripping a thick wooden slab, with a green knurled screw underneath
Loading the 3D view
Loading the 3D view
No adjustable sizes

Ask for the sizes you want to tweak, e.g. “make the width adjustable”.

Change it in the Studio

Parts

  • clamp body · PETG · On its side, flat chamfered face down (printRotate [0,-90,0]), so the layers run around the C and the hook

    About 31 g, 45 min at 2 walls/15%. PETG for a lasting load in a warm room. The nut thread has a 45 degree teardrop roof, so it prints without supports. A small star is pressed into the front.

  • thumbscrew · PETG · Knob down, thread pointing up

    About 6 g, 17 min. Fluted 34 mm knob, 6 mm-pitch round thread, 8 mm pin on top for the pad.

  • swivel pad · TPU · Socket opening down on the bed

    About 1 g, 7 min. Non-marking 22 mm pad that stays still while the screw turns. If you have no TPU, print it in PETG and stick a felt dot on top.

Print settings

Layer height
0.2 mm
Walls
4 walls for the clamp body and thumbscrew (2 is fine for the pad)
Infill
20% (gyroid or grid)
Supports
None
Notes
The page stats show the default 2 walls / 15%: about 40 g and 1 h 11 min for all three parts. For the recommended 4 walls / 20% the build report gives about 65 g and 1 h 56 min. Print the body and screw in PETG and the pad in TPU 95A. Calibrate the thread first: if the screw binds, raise the Thread

Hardware

  • 2 × Self-adhesive felt pad, about 20 mm · Optional. One under the top arm and one on a PETG pad if you don't print the pad in TPU, to protect painted or polished mantels.

Assembly

  1. Measure your mantel or shelf thickness and how deep the shelf is, then set the Mantel thickness and Grip depth sliders (grip depth must be no deeper than the shelf).
  2. Thread the thumbscrew up through the bottom arm from below. The thread is right-handed, so turning the knob clockwise as you look up at it raises the pad.
  3. Push the swivel pad onto the pin at the top of the screw.
  4. Back the screw off, then slide the clamp onto the mantel from the front until the top arm lies flat on the shelf.
  5. Turn the knob until the pad touches the underside, then about a quarter turn more so it's finger-snug. Don't crank it.
  6. Hang the stocking loop in the hook. To remove the stocking, lift the loop about 18 mm over the ball tip and pull it forward.

Good to know

  • Not for a mantel above a fireplace that is in use. PETG softens at about 70 °C, PLA at about 55 °C.
  • Load figures are engine estimates for stockings up to the slider's 3 kg, with a dropped-on factor of 2. They are not a tested rating, so don't hang anything heavier.
  • The printed thread's fit depends on your printer. If the screw binds or wobbles, adjust the Thread play slider and reprint.
  • The shelf needs a flat underside at least as deep as the grip depth slider, and no trim or moulding where the pad presses.
  • The friction check assumes about 60 N of finger-snug pad force. Tipping forward is blocked by the pad itself, but resistance to a sideways or forward yank depends on how snug you make it.
  • Each thickness setting covers shelves from 8 mm thinner to 4 mm thicker than the number you set. Outside that range, change the slider and reprint the body and screw.
I printed this Remix

Comments