All protocols are shared free for research purposes only, if you would like to contribute send donations to my Paypal “dr.grouf@gmail.com” A downloadable pdf file of all protocols is available for a donation of $5, to my Paypal “dr.grouf@gmail.com” provide your email to receive it, in the notes.
Sand Battery Heater, powered by alcohol lamp
Sand Battery Heater, powered by alcohol lamp
Sand Battery Heater, powered by alcohol lamp
All protocols are shared free for research purposes only, if you would like to contribute send donations to my Paypal “dr.grouf@gmail.com” A downloadable pdf file of all protocols is available for a donation of $5, to my Paypal “dr.grouf@gmail.com” provide your email to receive it, in the notes.