I finished this a little over a month ago.  Main beam is a railroad rail that a buddy had behind his barn for 20+ years.  Hydraulic tank was an air tank from a semi-trailer.  5.5 horse power motor was from a pressure washer.  Wheels are from a Jeep Wrangler.  Splitting wedge was a weight off an International Harvester.  11gpm two stage pump, valve, hoses, hyd. cylinder, and filter and housing I purchased new along with hubs, spindles and some steel.  It took me about 2.5 months to build on my days off.  Wedge and cylinder mount are bolted to main beam because I didn't think I could get proper penetration in the high carbon steel railroad rail.