Enlarged version of my G1 Sentinel.

The largest piece is the body at 224.1mm long. My Elegoo Neptune pro printer has a table that will accommodate this.

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

9/Feb/24 Updated: G3-22.0 Handrail 1.stl Shortening height form 5mm to 3mm.

9/Feb/24 Updated: G3-08 FRAMES L&R.stl Adding Rear step.

11/Feb/24 Note: For the sprocket set screws, Drill Jig, tap guide and M2 tap wrench STLs can be found with the G1 version Sentinel.

15/Feb/24 Replaced "G3-01 footplate HALF-F.stl" with corrected one.

22/Feb/24 I found Flats need to be filed on the Jack Shaft and the Axle Shafts for the Sprocket set screw to seat.