I just ordered the Wilson II kit without the printed parts and am starting the process of printing all the parts myself with an Ultimaker 2 that I have access to at my local makersapce. I would have bought all the printed parts with the kit but I have 4 rolls of filament from Makergeeks that I need to use up because they are all 2.85mm rather than the 1.75mm which I will be switching to once I have my Wilson II built. I have a few questions about printing these parts.
I have read more than a few times now that the parts shouldn't be printed in PLA because of it's brittleness and low heat resistance and rather ABS or PETG should be used. The 4 spools of filament I have are ABS, PETG, PLA, and Raptor PLA (HTPLA). Is there one of these you would recommend over another for all the prints, or maybe some parts in one type of material and others in another?
I have looked at all the STL's and can't tell for some if supports should be used. Do the STL's need any supports or are they designed to print without any?
I printed the table for the bed to ride on in the HTPLA and it came out beautifully, however there was some shrinkage when measured with calipers and comparing those measurements to the STL's after importing them into Inventor. Are the STL's designed with shrinkage in mind or should the parts be scaled based on the material? I am concerned that I may try printing a part in ABS (or any of these materials for that matter) only to find it has shrunk so much that it will not fit.
Thank you so much for any help. Any tips or warnings are also welcome!