Creative Common Attribution-NonCommercial-ShareAlike CC BY-NC-SA

Here is some openSCAD code that can be used to create handrails and stanchions.
The code is still underdevelopment.

To use you can either create and 3d model for a single stanchion or the code can be used to create a single modle multiple stanchions and handrails.

Currently limited to a single style of stanchion and cylindrical handrails.

The first image shows what is generated by the default openSCAD code.

No STLs are currently provided as these would depend on usage.

Sentinel Y3 Locomotive.

May 24           Source for Delrin sprockets and chain in UK, suggested by Robert SP (thank you Robert):

KARLGARIN MODELS January 2019
Warren Farm, Little Baddow, Chelmsford, Essex CM3 4TQ
Tel: (0)1245 226110 E-mail: skippy@karlgarin.com

22/Feb/24         I found Flats should be filed on the Jack Shaft and the Axle Shafts where the Sprocket set screws seat.

Many G1 modellers who have their own rolling stock use the 'Really Useful' brand of plastic boxes, particularly the 22l version for transporting and storing G1 coaches.
A problem with these boxes is that if stacked and then slid over one another the standard blue polypropylene lid clips can come dislodged. If one is not careful one can find that trying to lift 2 boxes just results in lifting one and a lid.
The object of this clip design is to provide a more secure clip that does not project above the box top and prevents dislodging.

Tref’s G1MRA Anniversary Brake Van Project was  a van to celebrate the 75th Anniversary of G1MRA, with a contribution from the 3d Printing Circle.

It is intended to be easily printed and assembled on the majority of FDM printers.

The initial publication of this coach is an attempt to make a simple model for the "Christmas tree" project.

Some discussion is needed to simplify the design to make it easy to print. Currently the break gear on the ends of the coach are rather fragile and the body, if printed on a resin printer probably needs dividing into two for most printers.

The smaller components were designed for resin printing. The body, when resin printer is in two parts.

S1 - 4 compartment second later converted to third class.

4 wheels

25' x 8' - 18' wheelbase

Model of the SER Clapboard Waiting Shelter based on the drawing by Brian Hart in the Elham Valley Railway book. 

10mm scale. Slots provide for 1mm clear plastic sheet to be used for window glazing. 

Wooden underframe five plank wagon produced in huge numbers during the 1920s. Lasted into the 1950s.  This model was originally on the Groups.IO site but got lost in the move. I have taken the opportunity to improve some details. It now incorporates a barrow ramp at the top of the door, and the brake gear rack has been considerably narrowed to come closer to the prototype.  The W irons are now less of a tight fit.