# Burner shroud for a horizontal finned 2 in hot spool

> How do I shroud the flame round a horizontal Stirling hot end?

- Category: Hardware › Stirling & thermoacoustic
- Kind: Hardware
- Basis: Design values; fins from the hot spool
- Page: https://xemstudio.com/objects/tri-clamp-horizontal-burner-shroud/ · JSON: https://xemstudio.com/api/geometry?object=tri-clamp-horizontal-burner-shroud · Plain text: https://xemstudio.com/objects/tri-clamp-horizontal-burner-shroud/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**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.

## Notes

- A sheet shell round the fins of a lying hot spool: the flame comes up through the Ø40 inlet under the fins, is held round them by the shell and leaves by three holes on top. Its legs stand on the frame on the side away from the torch stand's foot.

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| lid hole | Ø54.8 | 2 in tube Ø50.8 (no contact) | designed | all |
| feet holes | 2 × Ø4.5 | M4 clearance | designed | all |

## Sizes

| feature | value |
|---|---|
| shell | Ø92 / Ø88 |
| inlet | Ø40 below the fins |
| exhaust | 3 × Ø16 on top |

## Where the files are

- Long Earth Society: [Engine builds](https://longearthsociety.com/engineering/) — web, video — LES site

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/tri-clamp-horizontal-burner-shroud/index.json

- burner-shroud-2in-horizontal: [STEP](https://xemstudio.com/files/hardware/tri-clamp-horizontal-burner-shroud/burner-shroud-2in-horizontal.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-horizontal-burner-shroud/burner-shroud-2in-horizontal.stl) — horizontal burner shroud (world, base top z 8): shell Ø92 / Ø88 round the hot spool's fins, closed outer end, lid with a Ø54.8 hole, Ø40 flame inlet below, three Ø16 exhausts on top, two legs on +Y with Ø4.5 feet

## Questions

**What burner?**

A propane or butane torch head in the torch stand, pointing up.

## Fits with

- [2 in × 152.4 mm closed-end hot spool, bore finished Ø48.00](https://xemstudio.com/objects/tri-clamp-closed-hot-spool-bored/)
- [Build list: Tri-clamp horizontal gamma generator, 2 in, chargeable](https://xemstudio.com/objects/list-tri-clamp-horizontal-gamma/)