Pilot Models Constructed by Brett Gallant
Names, Logos, Designs and Photographs Owned and Copyright Brett Gallant

CHB Models Classics

O Scale Sawmill Machinery

Now Shipping

Kits include White Metal, Resin, and 3D Printed Details
Completely Updated with 3D Printed parts

Since 1995, SierraWest Scale Models has been the undisputed leader the world over in hand-poured resin and white metal detail castings. With emerging 3D Printing technology, SierraWest continues this tradition of unparalleled dedication to quality and innovation. Utilizing custom high strength tooling resin, SWSM 3D Printed detail parts are very durable and easily handled. All supports are removed here in the shop so you can enjoy the assembly process without the hassle of cutting these supports off. The boreholes are accurately sized, no drilling required. The machinery kits are so much easier to assemble now with the welcomed addition of the 3D Printed parts.

Click Here for Information on the Award Winning O Scale Sawmill Project

Single Blade Circular Husk

The “husk” is the wooden and metal frame constructed to support the saw assembly. It is pictured here without the included saw blade. The husk is the main machine inside a circular mill and in addition to cutting the logs, controls the carriage drive and sawdust blower. The large drive wheel is visible and is powered directly from the overhead shaft drive. It in turns powers the shafts that controls the carriage drive and sawdust blower.

Circular Husk - Second Blade

The second circular blade is supported by the immense steel frame. It is driven by a secondary drive wheel installed on the main shaft. This “blade arbor” is driven directly by the overhead belt drive system and is attached to the operators lever. It in turn controls the direction of the log or “shotgun” carriage by way of paper and iron friction wheels. These wheels are maneuvered into position by the operator and control the direction and speed of the carriage. The husk builds into a beautiful model with all of the detail made famous by C.H.B. Models throughout the years.

The Carriage

The circular husk, log carriage, and sawdust blower work together in unison. The carriage holds the logs while being cut. It travels upon a track back and forth passing the log through the blades. The adjustable “dogs” are very sharp and bite into the log holding it in place. Once the log is in place it is ratcheted and adjusted toward the blades by the log setter. He rides the carriage back and forth upon a platform. The machinery set is quite flexible as it works well for a small to medium sized mill. This gives you the freedom to design a mill to fit your space requirements.

Carriage Drive and Sawdust Blower

Both the carriage drive and sawdust blower are driven by the husk. These shafts can be seen in the photograph. The blowers intake duct is located near the blades to catch as much sawdust as possible. The discharge duct is connected to a burner or another type of disposal method. The log carriage is driven by the rope drum located directly under the track. This drum along with the rope sheaves moves the carriage along its track.

Live Rolls

As a log is cut the “cant” falls onto the live rolls. These are powered and moves the heavy cant along to the cut off saw. The operator pulls the lever and makes the rolls turn. Beveled paper friction cones and an iron friction wheel control the speed and direction. One operator can control the live rolls and cut off saw.

Cut Off Saw and Dead Rolls

The cut off saw hangs from the roof joist and is driven directly from the overhead system. A tight and loose wheel are used together along with the drive wheel which is connected to the blade spindle. The tight wheel turns the shaft and the loose wheel simply spins. The belt strikers are used to transfer the belt between these two wheels. The operator brings a board in along the live rolls, positions it, then cuts it to a desired length. The small counterweight helps the operator cut the log. The freshly cut board is now sent along the dead rolls to the edger.

Log Turner

The log turner is positioned over the log carriage near the husk and is responsible for turning the logs into their final cutting position. The head sawer is responsible for filling the mills orders and determines the positioning of the logs before each cut. Once again friction wheels and an over under belt arrangement are used to achieve operator control over direction and speed.

Log Deck

The log deck is a holding platform for logs waiting their turn on the carriage to be cut. The small steam powered cylinder, crank, and log stops work in unison to hold or release the logs onto the carriage as needed. Constructed of very heavy timbers, it is a formidable piece of the sawmill machinery puzzle. Not visible is a second steam powered cylinder attached vertically to one of the support beams. It controls a “kicker” which kicks the log off the “v” shaped skidway and onto the inclined rollway. The pictured logs are not included with these kits and are simply douglas fir tree branches.

Log Haul

The log haul is connected directly to the overhead belt drive system and is basically a series of gear reductions. An endless chain with sharp “dogs” positioned along the length is used to haul the logs up and out of the pond. The operator controls the ascent of the logs into the mill timing the rate with that of the cutting floors consumption of logs. The haul and deck are integral parts of the mill and are constructed together as one unit. You can clearly see how they are literally intertwined. The inclined portion of the haul that brings the logs out of the pond is not shown here. Plans and castings are included to build this portion of the haul as well.

The Edger

The edger or gang saw contains a series of five parallel blades located along a single shaft. The board after being chopped to length by the cut off saw rolls along the feed table and enters the edger. Here it is cut into individual boards. Since the saw blades may be adjusted, different board widths may be cut as desired. The finished boards are then sent to the discharge table. This is the end of the line and they can now be readied for transport to market. This type of machinery produces rough cut boards suitable for finishing in other mills or ready for use as bridge timbers, ties, mill or mine timbers, etc… The edger is driven directly from the overhead belt drive system. Complete plans are included in the manual for suggestions on arranging and driving the machinery.
The machinery kits listed above include all of the white metal details and 3D Printed Parts pictured, the original C.H.B. Models drawings, the original instructions along with a general assembly manual of construction methods and hints, weathering tips, photographs, and supplemental templates. The manual also includes information on the use of the machinery as well as how to arrange and drive the components. All kits are hardware only and do not include stripwood, brass wire, nbw’s, and the logs which are necessary to complete the models. A listing of these items are provided.

O Scale Standard Sawmill Machinery Set
Kit WP-SET | Now Shipping
Contains all machines listed above plus a line shaft kit
price listed does not include shipping and taxes

Double Cylinder Mill Engine

Horizontal Stationary Boiler

O Scale "Plus" Sawmill Machinery Set
Kit WP-SET-PLUS | Now Shipping
Everything Included in the Standard Sawmill Machinery Set plus the ME 900 Mill Engine and SB 850 Boiler
price listed does not include shipping and taxes

Click Here for Information on the Award Winning O Scale Sawmill Project