Mug LTD top plate Ø90 with rod guide and a 5 mL glass syringe socket — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/mug-ltd-top-plate/  (CC BY 4.0)
Basis: My geometry: the LTD kit's top plate scaled to Ø90, with the socket drawn at the 5 mL glass barrel's published OD (Ø15.40, KD Scientific)
Catalog version: 2026-10-20

Sizes: see table below
- Rod guide: Ø2 bore 13 long through the 3 mm plate and the Ø20 × 10 boss; the 2 mm displacer rod runs in it (that close fit is the seal).
- Syringe socket at x 35: Ø15.40 × 12 deep in a Ø18.4 boss, floor 9 above the plate's underside; the barrel's end sits on the floor and its Luer cone (7.5 long) stands in the Ø5 port below, its tip 1.5 above the plate's underside, so nothing reaches into the chamber. The port's outer edge is at R37.5, inside the Ø76 bore.
- 7 × Ø3.4: five chamber screws on R41 and two for the crank pedestal's foot at (35.5, ±20.5).

feature  size_mm
plate  Ø90 × 3
rod guide  Ø2 × 13
syringe socket  Ø15.40 × 12, floor at 9, x 35
port  Ø5

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Atlanta Vinyl Store: Premium 11 oz sublimation mug: 3.75 in H × 3.25 in D — web — listing [verify license at link] — https://atlantavinylstore.com/products/premium-11oz-sublimation-mugs
- James R. Senft: An Introduction to Low Temperature Differential Stirling Engines — book — Moriya Press [verify license at link] — https://www.stirlingengine.com/
- Wikipedia: Stirling engine — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Stirling_engine
- KD Scientific: Full Line of Glass Syringes, rev. A (order codes 78-0871 to 78-0880): piston OD, barrel OD D1, barrel collar D2, piston collar D3, length L — PDF — manufacturer datasheet [verify license at link] — https://www.kdscientific.com/media/brochures/KDS%20Glass%20Syringe%20Datasheet.pdf
- Long Earth Society: Engine builds — web, video — LES site — https://longearthsociety.com/engineering/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/mug-ltd-top-plate/index.json
API: https://xemstudio.com/api/geometry?object=mug-ltd-top-plate