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This is one of five HO scale models of the machinery used in the kind of medium sized sawmill that was common throughout the 20th century in communities all over the US and Canada. Such a mill would employ from 10 to 20 men and produce in the order of 10,000 to 20,000 board feet per day of lumber. The five models are the Log Haul-up winch, the No 2 Special Double Cut Headsaw, the Medium Gang Edger, the Roller Tables With Transfer Beams (a set of six) and the Wood Frame Swing Saw. The wheels and mandrels needed to build an overhead belt drive system are offered as well.
This model is patternedafter the DeLoach No 2 Double Saw mill as shown in a DeLoach catalog dating back to about 1908. It has a 60" lower blade, a 40" upper blade and is capable of cutting logs of almost five feet in diameter. Of interest is the variable speed friction drive for the carriage which consists of a compressed paper drum that rides against a rotating steel disk. The operator moves the drum towards the outer edge of the disk to increase the speed of the carriage and back past center to reverse it.
The headsaw will need to be cut into the floor of your mill and you will need to install the cable to the carriage bed. It loops around the center drum and runs forward and back beneath the mill to the end sheaves and ties off to opposite ends of the carriage frame. Make this cable of sewing thread or woven fishing line. You will also need to make the drive belts for the main shaft and the top saw. Use dental tape or paper and glue with ACC.
A similar saw remains in use today at the steam powered McLean Mill historic site near Port Alberni, British Columbia.
This model is as close to scale as Shapeways technology allows and can only be printed in frosted detail plastic. Detail is finer than most cast metal or plastic models and you will need a jeweller's loupe to see it all. The model is non operating.