Regenerator cage for 2 in and 1.5 in tri-clamp spools (Ø47.5 and Ø34.8) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/regenerator-cage/  (CC BY 4.0)
Basis: Split tube drawn at the tri-clamp spool bore (2 in Ø47.5, 1.5 in Ø34.8), 2 mm split so it closes for insertion
Catalog version: 2026-10-20

Sizes: see table below
- The 2 in cage is Ø47.5 OD (= the 2 in spool bore) × 40 long, Ø44 ID, 1.75 mm wall.
- The 1.5 in cage is Ø34.8 OD (= the 1.5 in spool bore) × 30 long, Ø32 ID, 1.4 mm wall.
- Each has a 2 mm split through one wall (designed), so it closes slightly to slide into the bore and springs out against it.
- The regenerator matrix fills the cage bore: Ø44 × 40 on the 2 in size, Ø32 × 30 on the 1.5 in.

cage  od_mm  id_mm  length_mm  split_mm  spool
regenerator-cage-47-5x40  47.5  44  40  2  2 in
regenerator-cage-34-8x30  34.8  32  30  2  1.5 in

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Wikipedia: Mesh (scale) — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Mesh_(scale)
- Wikipedia: Regenerative heat exchanger — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Regenerative_heat_exchanger
- Wikipedia: Steel wool — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Steel_wool
- McMaster-Carr: Wire cloth (free STEP per part, for your own design use; no redistribution) — STEP, PDF — McMaster-Carr site terms [verify license at link] — https://www.mcmaster.com/products/wire-cloth/
- Long Earth Society: Engine and rig builds — web, video — LES site — https://longearthsociety.com/engineering/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 2 parts): https://xemstudio.com/files/hardware/regenerator-cage/index.json
API: https://xemstudio.com/api/geometry?object=regenerator-cage