Six-way copper pipe joint - photo

**Altair** · Sep 6, 2020, 04:42 PM

Six-way copper pipe joint formed from a single sheet of copper by 19th century Dutch torpedomaker Grootvader.

Fullsize image: https://diqn32j8nouaz.cloudfront.net...k_fullsize.jpg

Previously:

Copper skiving machine - GIF
Hot spinning machine - GIF
Automated metal spinning machine - GIF
Copper forming - GIF
Metal spinning header end cap - GIF

**Philip Davies** · Sep 7, 2020, 11:47 PM

How many can do that now, I wonder? I would like to see the set out!

**will52100** · Sep 12, 2020, 08:58 PM

I'd love to see the progression of making that.

**Philip Davies** · Sep 13, 2020, 05:17 AM

Six-way copper pipe joint - photo-image.jpg

This is a fascinating book, written in 1893, and published by The Astragal Press (1-879335-37-9). The most complicated joint depicted is a 4-way pipe, made from two sides, crimped and brazed. Other joints show gusset pieces inserted. If this was really made from a single piece of copper, it is exceptional, a masterwork

**Toolmaker51** · Jun 3, 2021, 07:28 PM

Originally Posted by Philip Davies

How many can do that now, I wonder? I would like to see the set out!

I'm guessing "set out" equals our "lay out", on this side of pond?
That is tough to visualize; beyond the once in awhile odd HVAC ducting transition.

Finally, if old Grootvader could do this, no question his torpedoes blew everyone away......