Small tools are essential you will have to trace, measure, saw, file, drill, tap and so on. Do not hesitate to buy quality for cutting tools (saws, files, drills, taps, dies, mills, etc ...) because you will have more ease to obtain good results. Regarding the control tools (caliper) of medium-range is sufficient because you will often work by comparison between the parts to be assembled. Most of these tools are found in DIY superstores or web suppliers.
With experience you will not hesitate to make your own tools (see the small truscan and the divider plate on the pictures) because often the specialized equipment of the trade is a bit big for us and especially very expensive.
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