Thread: Ignition of paper using lenses??
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  #34  
Old 22-12-2019, 12:25 AM
bgilbert (Barry gilbert)
barryg

bgilbert is offline 		 
Join Date: Oct 2015
Location: tamworth
Posts: 66
Wavytone,
Pray tell, give me some numbers, so I too, will be erudite.
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