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This is a 3mm scale body of a Furness Railway J1 Class locomotive. Originally in 4mm it has been re-scaled and remodelled in several areas.
The Coal rails above the bunker on this version are provided as a loose 'glue-in' as the rails themselves are very thin and likely will fail on the print. The inner walls for this reason have been made solid. Photographs of the J1 show some locomotives had the coal rails and some didn't so changing the look will be easier this way rather than having to cut the rails off on the 4 or 7mm version.
Due to the smaller size the cab floor at the front and the splasher sides have been provided as an optional 'glue-in' so as to again give choice due to the space restrictions. If it is unviable to use it due to the motor or gearbox then the hole is already designed in to make life easier. If you can fit it in position so much the better.
A backhead also is included loose to glue into place. Buffers are fixed in position on the 3mm version also. A few details and walls have been tweaked due to printing tolerance considerations yet other than that it is basically the same as the original.
The model as standard is fitted with the smallest chimney out of the alternatives (in the future, for 3mm available seperately from SCC), rather than model the alternative chimneys with the base as is often done they are designed with the main shanks to slot into the base instead - this ensures the lip isn't overly fat like on many kits and RTR examples. If however you would like to obtain some of the chimneys with the base all as one piece to add on to another engine or whatever please ask and it can be done.
Add your own hand rails, couplings and brake pipes. A few pipe runs and bits have been left off as they will model better using brass wire or similar, the coal rails are optional as some engines didn't have them so simply cut them off if you don't want them.
There are four Furness pattern lamp irons at the front, one of the middle two will need clipping and filing off. Both configurations are correct yet photographs show them to differ so please refer to your research to determine which needs chopping for your particular variant. If you are not fussed then either will do.
In front of the smokebox there is a hole in the running plate towards the headstocks as seen in photographs.