Professional crimping tools are generally custom manufactured for a particular connector. Figure out what kind of connectors you will use, and then buy the tool to suit.

It seems to me that high grade crimping tools run from $200 to $500 each. Some tools will accept different heads for different connector sizes - but not always, sometimes you have to buy a tool for each size pin and socket you plan to use.

I've been lucky going to Hamfests and perusing eBay for used crimping tools - sometimes I've purchased a perfectly good tool for 1/10 its original price. But you have to be careful - these tools wear out and then you end up with bad crimps.

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1984 300TD