I have modified the BR Class 08 published by Peter Davis at the GaugeOne3DCircle (https://gaugeone3dcircle.groups.io/g/home/files/BR%2008%20Shunter) to the Dutch version of this locomotive.

Thanks again to Peter for publishing these files. Your effort is highly appreciated!
A have adressed the obvious differences between the Dutch and the English model (i.e. lanterns, battery-boxes, windows, radiator, engine cover doors, etc.).

In the original design only one axle was driven by a motor. This drive was relatively weak and was prone to break down/wear out quickly because the forces to drive the other axles are actively transferred by the connecting-rods.
I have designed a new drive unit. A geared JGA25 motor drives a central axle in the frame, that drives each axle with worm-gears. All axles rotate in MR63ZZ bearings. The connecting-rods are now fitted for decoration only.
Details on building this locomotive are published in the GaugeOne3DCircle forum: (https://gaugeone3dcircle.groups.io/g/home/topic/77159044#7520 / https://www.g1-3d.uk/model/nederlandse-spoorwegen-500600700-series-shunter-locomotive-gauge-1-edited-version-br-class-08)
The author remixed this model.
Modified specific detail of the Class 08 to create the Dutch version Series 600.
Added drive unit.