New consulting relationship with GreenTecAuto begins
What actually goes wrong with the batteries????
A look at todays Hybrid and EV battery packs
Battery packs exposed
Keeping Warm In New England
Plugging into the SUN
Making a small solar concentrator
Building MIMA and the plug in adapters
Converting a telephone truck to electric
DIY dual pulse Capacitor Discharge Spotwelder
Chevy Bolt EV joins the family
Getting in shape while making electricity
Retirement
Replacing gasoline with solar electric lawn equipment
What is Genesis One?
How to stop the aging process DIY
MIMA Install Day 2005 a Big Success!
Building a hybrid car grid charger
Tapping into the Wind
Expanding MIMA with the Distribution board ( users projects )

Old Rear projection TV lens makes solar furnace

Old Rear projection TV lens makes solar furnace
Melting rock with a 36" fresnell lens

The local transfer station always has some old TVs.
I took some tools with me and stripped off the fresnell lens from a big rear projection set that had been sitting for a couple of weeks.
The corner was cracked, so I cut out the central portion and used some silicone to glue it into a steel mounting ring.
I mounted it to a tracking base, and did some experiments.
Wow this baby can generate some pretty high temperatures.
I started by melting a 3/8" hole clear through a 1/4" thick piece of lead in less than a minute.
Then I grabbed some stones and proceeded to turn them into lava. One must have had some stored gasses, so the molten rock made a beautiful glass bubble. Wonder what else I can do with this?