• 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 the cider press projects digital market permies.com private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • r ranson
  • Nicole Alderman
  • Anne Miller
  • Pearl Sutton
  • James Freyr
  • Jocelyn Campbell
stewards:
  • Joylynn Hardesty
  • paul wheaton
  • Burra Maluca
garden masters:
  • Steve Thorn
  • Greg Martin
gardeners:
  • Jay Angler
  • Carla Burke
  • thomas rubino

Forge Idea magnifying sun from digital light projection

 
                                          
Posts: 9
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
My son's solar project of the day, he tore apart an older DLP TV and using one of the magnifying layers from the screen my son Loryn is going to use this in place of coal in his forge. The sky is slightly over cast today, the sun is covered with thin clouds, enough sun to still see our shadow. A piece of paper burst into flames in 2 seconds. It takes a little longer to bring metal to a bright yellow glow color he needs to work the steel. Absolutely amazing green eco project to save on using up our earths fossil fuel resources.

Brenda


 
pollinator
Posts: 4665
Location: Zones 2-4 Wyoming and 4-5 Colorado
462
hugelkultur forest garden fungi books bee greening the desert
 
                                          
Posts: 9
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

Wyomiles Hogan wrote:Hey Brenda did you see this thread?

https://permies.com/t/21924/solar/making-glass-grid



No, I didn't see this thread but I did briefly browse a few of the solar forums looking for magnifying lenses from DLP's.
 
Posts: 136
Location: Sunset Zone 27, Florida
forest garden trees rabbit
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
i'd be interested in viewing a youtube of his results. my experiments with fresnel lenses had led me to believe that the recycled tv ones make a more diffuse angle, which works just fine for cooking, but something like forging would require the "spot" fresnel lenses, which are angled to better focus light into one tiny point.
 
                                          
Posts: 9
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

chrissy bauman wrote:i'd be interested in viewing a youtube of his results. my experiments with fresnel lenses had led me to believe that the recycled tv ones make a more diffuse angle, which works just fine for cooking, but something like forging would require the "spot" fresnel lenses, which are angled to better focus light into one tiny point.



The point he is stuck, the tv screen from a DLP it seems to be too hot for the metals. How to adjust the temp. He said he needs to unfocus the screen so its not such a focused point. I'll have pics soon, we need to build a tripod for the screen. 2 guys holding the screen kind of crude! lol
 
chrissy bauman
Posts: 136
Location: Sunset Zone 27, Florida
forest garden trees rabbit
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
you could shade the lens to reduce the incoming light if you need to. or adjust the lens closer or further from the spot.
 
                                          
Posts: 9
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

chrissy bauman wrote:you could shade the lens to reduce the incoming light if you need to. or adjust the lens closer or further from the spot.


He'll get it right. Wants to make a video on this for sure. Maybe not having to deal with the coal, the art of blacksmithing will grow back.
 
No matter. Try again. Fail again. Fail better. This time, do it with this tiny ad:
Learn Permaculture through a little hard work
https://wheaton-labs.com/bootcamp
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!