Item 2-280649 (280649): the Siegmund Prism Extension is a burnished Ø 28 mm extension, 25 to 150 mm long, that screws into Siegmund System 28 prisms. Sold in Canada by BTH Sales, exclusive Canadian importer of Siegmund; ships from St. Marys, Ontario.
It changes the prism's working height and, with spacers (280821) or the screw support (280822), lets you position the prism infinitely.
Specifications
| Item no. | Siegmund name | Length | Weight | Diameter |
|---|---|---|---|---|
| 2-280649 (280649) | Prism Extension 25 burnished | 25 mm (0.98 in) | 0.11 kg (0.24 lb) | 28 mm (1.10 in) |
| 2-280649.1 (280649.1) | Prism Extension 50 burnished | 50 mm (1.97 in) | 0.22 kg (0.49 lb) | 28 mm (1.10 in) |
| 2-280649.2 (280649.2) | Prism Extension 100 burnished | 100 mm (3.94 in) | 0.45 kg (0.99 lb) | 28 mm (1.10 in) |
| 2-280649.3 (280649.3) | Prism Extension 150 burnished | 150 mm (5.91 in) | 0.69 kg (1.52 lb) | 28 mm (1.10 in) |
Compatibility
- Fits: Siegmund System 28 prisms (screws into the prism's M16 thread). Used with a System 28 prism, it also works on other 28 mm system welding tables with Ø 28 mm bores on a 100 mm grid.
- Siegmund System 28: fits every System 28 Siegmund table, including the Professional Extreme 8.7 and 8.8 PLUS tables listed on bthsales.ca; Siegmund's page cross-references 280821, 280822.
- Not compatible with: System 16 (Ø 16 mm bores) or System 22 (Ø 22 mm bores) tables and tools – use the Siegmund S16 Prism Extension.
- Works with: Siegmund S28 Set of Supports 280821, Siegmund S28 Screw Support Ø80 280822.
What's included
1 × prism extension in the selected length (burnished). Prism not included.
Typical uses
- Raising a prism to the centre line of a pipe
- Combining with the set of supports for set heights
- Using the width flat to fasten to a custom construction
- Light to heavy workpieces: Siegmund describes System 28 as ideal for light to heavy components and designed for maximum clamping forces, multi-ton structures and high distortion forces
Industries served: Siegmund's published practical examples show its welding tables and tooling in agriculture, interior fit-out, lighting and electrical engineering, machine tools and plant construction, measurement and testing technology, motorcycle engineering, revolving door systems, robotic technology, stage technology, stainless steel processing, steel, sheet metal and metal construction, textile production, train construction, vehicle construction, welding technology and woodworking.
FAQ
Which prisms does the extension fit?
Siegmund says it screws into all System 28 prisms; the prisms have an M16 thread for it.
How do I get a height between sizes?
Use it with the screw support (item 280822) for infinitely variable positioning, per Siegmund.
Is it available in aluminum or polyamide?
Siegmund says all parts are available in aluminum or polyamide on request. This listing is the burnished version; contact BTH Sales about the others.
Will it fit a System 16 table?
No. It is for System 28 prisms. Use the System 16 Prism Extension for System 16.
Will it fit other 28 mm welding tables?
Yes, through the prism. It screws into a System 28 prism, and the prism fits tables with Ø 28 mm bores. Siegmund System 28 tables use a 100 × 100 mm (or diagonal) grid and about 24.5–27 mm material, so check your table's bore and plate thickness first.
