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Mug LTD bottom plate Ø90 × 6 (sits on an 11 oz mug)
What size plate does a Stirling engine need to sit on a coffee mug? · Hardware · basis: Ø90 chosen to sit on an 11 oz mug (rim Ø82.55 = 3.25 in, listing cited) with 3.7 mm overhang; proportions scaled from the LTD kit
Long Earth Society build part. The hot plate of the mug LTD. The engines
Exact dimensions. Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part. Mating features
- sizes
- 3 in table
Notes
- Ø90 × 6 hot plate. The 11 oz mug's rim is Ø82.55 (3.25 in); the plate overhangs it by 3.7 mm all round and its underside is flat: the chamber screws go into M3 tapped holes (Ø2.5 tap drill, through) and stop 2 mm above the underside, so nothing stands proud where the plate rests on the rim.
- 5 × M3 tapped on R41 at 60°, 120°, 180°, 240° and 300° (0° is under the syringe socket); the chamber ring and the top plate stack on it (ring 23, top plate 3) and five M3 × 30 from the top plate reach 4 mm into it.
Sizes
| feature | size_mm |
|---|---|
| plate | Ø90 × 6 |
| screw circle | R41, 5 × M3 tapped Ø2.5 |
| mug rim (11 oz) | Ø82.55 |
Mating features
Drawn at the exact size. Open press, slide, run and socket features by your process's clearance; leave designed gaps and clamp fits as drawn.
| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| chamber screw holes | Ø2.5 (M3 tapped), 5 on R41 | shcs-m3x30 | designed | all |
| underside on the mug rim | Ø90 flat on an Ø82.55 rim | 11 oz mug (found object) | designed | all |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Atlanta Vinyl Store | Premium 11 oz sublimation mug: 3.75 in H × 3.25 in D | web | listing verify |
| James R. Senft | An Introduction to Low Temperature Differential Stirling Engines | book | Moriya Press verify |
| Wikipedia | Stirling engine | web | CC BY-SA 4.0 (text) |
| Long Earth Society | Engine builds | web, video | LES site |
Free files
★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| mug-ltd-bottom-plate-90 | bottom (hot) plate Ø90 × 6, 5 × M3 tapped (Ø2.5) through on R41 at 60°, 120°, 180°, 240°, 300°; rests on an 11 oz mug rim (Ø82.55) | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=mug-ltd-bottom-plate
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Questions
Will a Ø90 plate sit on a coffee mug?
On an 11 oz mug (rim Ø82.55) yes, with 3.7 mm overhang; 15 oz mugs are wider, so measure yours.