We also take advantage of the unusual capabilities my Bridgeport 'T-Ram' offers, and by sliding the head down to the end and later over to the left side, can perform all the milling operations without unbolting the frames from the table. Typically, when you have a part like these frames, 48 inches long, and a smaller table (42"), you have to unbolt the part and move it around to machine the whole thing--and every time you unbolt it, you can loose accuracy. The mighty T-Ram gives me a virtual 20 more inches of travel, so machining a 48" part is not a problem--I have virtual 62" table!