This 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
Watch the DIY Homemade Wooden Bandsaw Mill Video series