From the Loftsmith community

iPhone tube-clamp holder, adjustable width

Puts your iPhone where you can see it on a bike bar or any round tube. A split clamp hugs the tube below, and a flat cradle with two raised side rails and little end tabs holds the phone on top. Change the tube size and the phone width to fit your own.

5 parts · 68 g · 110 × 110 × 72 mm

by SailSpartina

Orange flat phone cradle with side rails sitting on a dark split clamp wrapped around a round tube
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No adjustable sizes

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

Change it in the Studio

Parts

  • clamp-bottom · PLA · Split face down
  • clamp-top · PLA · Split face down, as modeled
  • cradle · PLA · Flat, back face down
  • jaw ×2 · PLA · On its flat base

Print settings

Layer height
0.2 mm
Walls
3 walls for the clamp halves and jaws
Infill
15–20%
Supports
None expected; possibly a tiny amount on clamp-top
Notes
Print the clamp halves with the split face down.

Hardware

  • 2 × M4x20 socket bolt · Clamp bolts. They go in from below.
  • 3 × M4 hex nut · Two go in the clamp ears, one in the front slot for the pivot.
  • M4x18 countersunk bolt · Pivot bolt.
  • 4 × M4 heat-set insert · Go in the underside of the jaws.
  • 4 × M4x12 socket bolt · Jaw locks. They go up through the plate slots from underneath.

Assembly

  1. Press the two M4 nuts into the ear pockets of clamp-top, and slide the third nut into the front slot.
  2. Bolt the two clamp halves around the tube with the M4x20 bolts.
  3. Fit the cradle on the pad with the M4x18 countersunk pivot bolt. Tighten it until it turns firmly.
  4. Heat-set the 4 inserts into the jaws. Fix each jaw with two M4x12 bolts from under the plate, with the jaw lips about 0.6 mm clear of the phone edges.

Good to know

  • The slide-and-lock jaws, pivot friction and clamp grip are estimates from calculations. Test them with your phone before you ride or drive with it.
  • The clamp-top may need a little support, about 1 g, around the bore or the nut pocket. Check the preview in the slicer.
  • Jaw slots allow roughly 62 to 84 mm phone widths. Measure your phone with its case on.
I printed this Remix

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