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Mug LTD top plate Ø90 with rod guide and a 5 mL glass syringe socket
How do I mount a glass syringe on a small LTD Stirling engine top plate? · Hardware · 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)
Long Earth Society build part. Cold 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
- 4 in table
Notes
- 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).
Sizes
| feature | size_mm |
|---|---|
| plate | Ø90 × 3 |
| rod guide | Ø2 × 13 |
| syringe socket | Ø15.40 × 12, floor at 9, x 35 |
| port | Ø5 |
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 |
|---|---|---|---|---|
| rod-guide bore | Ø2 × 13 | Ø2 displacer rod (slides through it) | run | all |
| syringe socket | Ø15.40 × 12 | 5 mL glass syringe barrel | socket | all |
| Luer port | Ø5 | Luer cone (no contact) | designed | all |
| screw holes | Ø3.4 × 7 | M3 clearance | 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) |
| 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 | manufacturer datasheet verify | |
| 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-top-plate-90-glass5 | top (cold) plate Ø90 × 3: Ø2 rod-guide bore 13 long through the plate and a Ø20 × 10 boss; Ø15.40 socket for the 5 mL glass syringe barrel at x 35 (floor 9 above the plate's underside, 12 deep, Ø18.4 boss) over a Ø5 port; 7 × Ø3.4 | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=mug-ltd-top-plate
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Questions
Which syringe fits the mug LTD's socket?
The 5 mL all-glass syringe (barrel Ø15.40); the socket is drawn at that OD exactly.