3D Printed Details and Kits


CHB Models was the passionate life's work of Charles H. Brommer or as he was known to his many modeling friends as simply "Charlie". Charlie specialized in incredible high quality, super detailed O Scale white metal kits including logging and mining implements, sawmill and machine shop machinery, Dolbeer Logging Engines, yarders, hoist engines, tools, and even a pair of beautiful MACK trucks. Charlie was an old school machinest creating the most amazing brass masters our hobby has ever seen. I was very fortunate to purchase the CHB Models line from Charlie before he passed away and have released well over 75% of the line in O Scale - white metal, since that time in 1999. The CHB Models line was previously only available in O Scale but with the advent of the SierraWest 3D Printing era, many of those legendary kits are now being made available in HO Scale for the first time! Check back often for new details and kits as they are added reguraly.

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 painting and weathering process without the hassle of cutting these supports off. Replacements are sent fast and free if you ever damage or lose a part. Be sure to check back often for the addition of new details.
All items listed for sale on this page are in stock and ready to ship within 2-3 business days. All items are in very limited quantities and once sold out the "buy now" button will indicate "out of stock". Items on this page will be restocked as time permits. Castings pictured are painted and weathered, yours will ship unpainted and unweathered. Assembly required for the kits. Photographic props are not included.





HO and O Scale
Old Style "Wooden" Disconnected Log Trucks


A classic logging disconnect that will be at home on any logging layout. Very easy to weather and construct. Be sure to view the accompanying assembly video. (click on the "university" link at the top of this page) Each kit includes the parts needed to construct two cars. They include the appropriate gauged trucks as per your selection. These are sold as static models. They may be converted to operational if you replace the 3D Printed wheelsets. Wouldn't a string of these empties be the ultimate anchor to a scene placed on a neglected, overgrown siding next to your sawmill? Now that's some serious vintage backwoods logging! The O Scale kits include hand poured resin frames and bunks, the HO version include all 3D Printed frames and bunks. Comprehensive instructions are provided online to download and print as desired. The 3D Printed parts paint and weather exactly like my traditional hand poured resin castings. Photographic props are not included.


Disconnected Log Truck Pair
HO Standard Gauge

Disconnected Log Truck Pair
HOn3 Gauge

Disconnected Log Truck Pair
On3 Gauge

Disconnected Log Truck Pair
On30 Gauge







HO, S, and O Scale Logging Blocks


A single piece block casting with accurate, scale detail. These really show off the 3D Printing capabilities, what beauties! These are exact replicas of the original CHB Models white metal blocks, fully assembled. Use these to create a spar tree or as a beautiful piece of prototypical clutter in your scene. They paint and weather exactly like my traditional hand poured resin castings. Photographic props are not included.


HO Scale 12" Logging Block - "1" above
pack of 4

HO Scale 12" Logging Block - "2" above
pack of 4

HO Scale 16" Logging Block - "3" above
pack of 3

HO Scale 24" Logging Block - "4" above
pack of 2

S Scale 12" Logging Block - "1" above
pack of 4

S Scale 12" Logging Block - "2" above
pack of 4

S Scale 16" Logging Block - "3" above
pack of 3

S Scale 24" Logging Block - "4" above
pack of 2

O Scale 12" Logging Block - "1" above
pack of 4

O Scale 12" Logging Block - "2" above
pack of 4

O Scale 16" Logging Block - "3" above
pack of 3

O Scale 24" Logging Block - "4" above
pack of 2







HO and O Scale Fall Block and Tree Shoe


Fall Block includes a single piece main body and separate clevices. Tree Shoe is a single piece casting. Both feature accurate, scale detail. These really show off the 3D Printing capabilities, what beauties! These are exact replicas of the original CHB Models white metal pieces. Use these to create a spar tree or as a beautiful piece of prototypical clutter in your scene. They paint and weather exactly like my traditional hand poured resin castings. Photographic props are not included.


HO Scale Fall Block
pack of 3

HO Scale Tree Shoe
pack of 3

O Scale Fall Block
pack of 3

O Scale Tree Shoe
pack of 3







HO and O Scale Slack Line Carriage and Loading Jack


Slack Line Carriage is constructed from two individual main body castings with separate clevices. Loading Jack is a single piece casting with separate clevices. Both feature accurate, scale detail. These really show off the 3D Printing capabilities, what beauties! These are exact replicas of the original CHB Models white metal pieces. Use these to create a spar tree or as a beautiful piece of prototypical clutter in your scene. They paint and weather exactly like my traditional hand poured resin castings. Photographic props are not included.


HO Scale Slack Line Carriage
pack of 2

HO Scale Loading Jack
pack of 3

O Scale Slack Line Carriage
pack of 2

O Scale Loading Jack
pack of 3







HO and O Scale
Double Cylinder Mill Engine
Stationary Horizontal Boiler


HO Scale kits contain the exact level of detail as the O Scale kits! These are the legendary CHB kits available previously only in O Scale. The HO Scale kits include 3D Printed and hand poured resin parts. The O Scale kits include a combination of 3D Printed, hand poured resin, and white metal parts. The 3D Printed parts paint and weather exactly like my traditional hand poured resin castings. Photographic props are not included.


HO Double Cylinder Mill Engine

HO Stationary Horizontal Boiler

O Double Cylinder Mill Engine

O Stationary Horizontal Boiler