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Hey mate.

Wow, what a fantastic great looking model. I am an Aeronautical Engineer student here in Australia and when I seen this model, I went and showed one of my lectures. As I was, he was just blown away on how great this model is. I have worked with CATIA "not my favourite" and Inventor "my favourite" and so I can really appreciate the amount of time and effort that would have went into this. So my lecturer and I will be making one. I will be starting my one as soon as semester break begins :).

So with that all said, I am going to be printing this on my Up Plus 2 printer and most likely going to be using PLA filament so that I will have minimal shrinkage/warping compared to ABS. I have a few questions with regards to the purchasing of the materials. Firstly, the 2.5mm DIA screws that you use. Would a 2mm DIA screw work instead? or even 3mm? or is it paramount that it be 2.5mm? Also, regarding the bearings. If I was to use the one type of bearing, say a 8mm ID, 22mm OD, 7mm W and fabricate components to fit the size difference. Would that work? or is it only suitable to use the bearings that you listed? Only asking as we already have these materials and saves purchasing additional ones.

Also, are all dimension for the STL files in mm or inch? So l make sure when l import the files in the program, l use the right dimensions.

Again, fantastic model. :)

Thank you