• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources cider press projects digital market permies.com private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nicole Alderman
  • r ranson
  • Anne Miller
  • Pearl Sutton
  • Mike Haasl
  • paul wheaton
  • Joylynn Hardesty
  • Dave Burton
master gardeners:
  • jordan barton
  • Greg Martin
  • Steve Thorn
  • Carla Burke
  • Jay Angler
  • Kate Downham

3d printing

Posts: 15
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I know this question doesn't quite fit the Permies view of simplicity and working with materials on hand, but if you could 3d print a rocket mass heater riser, feed tube, etc. using ceramics what shape would it be? Would there be a spiral twist in the riser? I guess for that matter you could just make one by had out of clay and fire it in a big kiln.

Posts: 3236
Location: Southern alps, on the French side of the french /italian border 5000ft elevation
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Alan, spirals have kind of proved to be counter productive because theses induce a drag. Impeding the draft. In a J tube, you can't do much more to improve mixing than a P channel, a trip wire and a kicktail.
Common Weeds And Wild Edibles Of The World (HD video)
will be released to subscribers in: soon!
    Bookmark Topic Watch Topic
  • New Topic