I built my bundler a year ago. Not real complicated device, 1/4hp gear head motor and a large pulley with arm to wind the wrap around the wood. Still "fine tuning" the tension system. It has wrapped almost 2000 bundles this year already. 12" blown stretch wrap 1500' rolls will wrap over 100 bundles. $10 a roll, so 10 cents max on wrap. And the end result is a nice TIGHT bundle. Quality sells!!! Mingo your wood to 16" and try and split it a little smaller. My machine and I can bundle 45 per hour easy. a bundle a minute is achievable if not loading truck at same time.