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3D printed in white nylon plastic with a matte finish and slight grainy feel.
The Sentinel company built this class of shunter between 1948 to 1958, becoming popular with industrial railways. Following their customary designs, the vertical boiler was located in the cab with central water tanks and a steam unit at the front end operating chain drive to the wheels. Several are preserved today.
This model originated as a jumbo-ised N Gauge engine, suitably altered to 00 operative tolerances and to fit proprietary parts (notably the wheelbase for motorising), enabling simple construction.
IMPORTANT: while most models available here have been pre-tested and known to work, this scratch-aid has not been printed/tested by myself, so while the measurements appear correct it is considered strictly experimental. (Edit: this has since been printed by the commissioning customer who kindly provided the above image.)
(Note: various materials are provided, however, WSF and BSF will require more preparation for smooth painting that FUD and FED.)
The following additional parts need to be sourced separately to complete (web links given as examples only):
• Screw-fit coupling (best to just glue/pin – mounting point included on the tender):
Hornby Spares - Coupling Unit and Screws - A1X Terrier - Pack of 1
Optional additional details to scratchbuild (at the builder's discretion):
• Buffers (locating holes provided)
• Sanding pipes (locations are marked for drilling)
• Boiler (omitted to give access for adding weight)
• Coal and crew
I hope you enjoy this unusual and eye-catching model.