I'm always trying out new parts for my printer and plan on a full remodelling at some point so I thought it would be useful to know what was there in the first place and helpful to have a model to make sure new parts are likely to fit. As a result I put this basic arrangement model, for the Ormerod 2 Ver 528.4, together.
It doesn't have all the bearings, hotend wiring etc. on it because that was not its intention.
Don't know if it will be of any use to anyone other than me but I thought I would put it out there just in case.

UPDATE: I've just noticed an error with the alignment of the Z axis smooth rod. Apologies but it's very difficult to align the original stl files with 100% accuracy. I believe I have rectified the issue. SketchUp model has been updated. I didn't see much point in updating the stl file as it is of little use in my opinion.