How to assemble this connector?

[iXod]

Whenever I see a slot like this for a wire in a connector I think insulation displacement. I presume there's a special tool to assemble these to the wire, but is there a reliable method that doesn't require buying the tool? Need to assemble one 3-pin of this type.

Thanks.

[charlespax]

Duplicate thread. Answer posted in https://www.eevblog.com/forum/beginners/how-to-assemble-this-connector-71113/