This video shows the build of a Homemade Hot Water Air Heater using an old heat exchanger and a car radiator fan.This unit provides near-instant warm air.The Air-Flow: it’s adjustable from 10 CFM to 1500 CFM. max breeze 20 Mph! The Temps: With input water temps between 120F to 150F the output air temp ranged from 85F to 110F. *or from heat pump temps up to near furnace temps! easily warms a room or two, maybe more.The heart of the unit is an 8×8 Copper/Aluminum Heat Exchanger., This unit can easily be run straight from a 12v solar panel or battery so it’s “off-grid” ready. Simply mounted the fan in front of it,then connected the pipes. then you just connect a small water pump (200-350 gph) to one of the pipes and drop both pipes into a water-filled sink,almost immediately it creates very warm air (in under a minute).
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- How to build a Homemade Wooden Bandsaw Mill from Scratch.Step by step build InstructionsThis video series shows the build of a Homemade Bandsaw Mill from Start to finish.The design for the saw is a good one, in that it was rock solid as it was making the cuts. Making the saw itself move as opposed to moving the wood through it would really make the build a lot more complex. Beefing up the frame to resist movement (chatter) while cutting through 16" of hard maple would be difficult, especially if the height was also adjustable.Using a stick to lever the wood through the saw was a very good way to regulate a steady feed rate and took little effort. For serious cutting in green, thick hardwood, a 2hp motor doesn't really "cut" it. To make the cutting more efficient (read faster), the blade speed should be very high - as high as 6000 fpm - and a motor that size doesn't have the power. A 6-8 hp gas engine would be much better