1/2" Pipe Escutcheon — Two-Piece Snap-On (2.25", 2.75", 3.25")

Remix attribution

This is a remix of Abschlussrosette für Rohre (pipe escutcheon) by pits, licensed under CC BY-SA 4.0. Released under the same license. The original two-piece interlock geometry — pipe cutout, mating ears, and meeting-edge profile — is pits' design. This remix only enlarges the outer flange.

Summary

A two-piece snap-on escutcheon for 1/2" copper or PEX pipe (~5/8" / 15.9 mm OD), in three wall-coverage sizes. The two halves clamp around an in-place pipe, so you don't have to remove valves, fittings, or anything downstream — just snap the halves together around the pipe and slide the assembly against the wall.

Sizes

Each variant ships as a 3MF with both halves arranged together on the build plate, plus a backup STL.

What it fits

• 1/2" copper (Type L/M): ~15.9 mm OD — snug fit

• 1/2" PEX: ~15.9 mm OD — snug fit

• The cutout is ~16.5 mm diameter (radius 8.25 mm). Not suitable for 1/2" iron or PVC schedule 40 (those are ~21.3 mm OD and need a larger escutcheon)

What's different across the three variants

The interlocking geometry is identical across all three sizes:

• Same pipe cutout (r = 8.25 mm)

• Same interlock "ears" that mate the two halves together

• Same meeting-edge profile

Only the outer flange differs. Each successively larger variant extends the rim further outward, smoothly stretching the original dome profile so it tapers cleanly to the wall surface at the new outer edge. You can swap to a larger size to hide a bigger drywall cutout without changing how the part grips the pipe.

Print recommendations

• Orientation: flat side down (the bottom face is already flat in the file; no rotation needed)

• Layer height: 0.2 mm works fine; 0.16 mm if you want a smoother dome

• Infill: 15–20% is plenty for a non-structural cover

• Supports: not needed

• Material: PLA is fine for indoor use. PETG if it's near a heat source (radiator, hot water line). ASA for outdoor.

• Quantity: each variant is one full escutcheon (top + bottom half). Print both halves together.

Installation

1. Print both halves of your chosen size

2. Place one half against the pipe so the cutout cradles it

3. Press the other half on from the opposite side; the interlocking ears snap together

4. Slide the assembled escutcheon flush against the wall

If the snap fit is too tight (common with PLA shrinkage), a quick pass with a hobby knife on the interlock ears loosens it. Too loose, scale the model up by 1–2% and reprint.