Having just gone through this...
If you look at the SteinAir web site, under the tools link, you will find a picture of the Crimper and die set that we are talking about in the above posts. For the SAT-030 die set (this is for the insulated terminal types), the wires do go into the die from the painted dot side. BUT, this may only be true for this particular die set.
The reference to the "bow tie" is a very clever description of the open area of the die that can be seen if you close the die and look closely at the die...with no terminals in the jaws. If you are a computer geek, I would describe the area as a reverse video bow tie shape. Close the dies and look at each side closely. At this point, only you can tell if they are the same or different.
Another clue that Stein gave is to look at the inside area of each half of the die set. If it is (his), the one we are talking about (for aviation use?), you will see some little dimples (pits) in each of the die cavities. These pits will leave little raised bumps in the area of the wire crimp of the insulated terminal, and serves the purpose of a visual confirmation that the terminal has been properly crimped.
If you are using some other brand of crimper, all of the above may not apply. The ratcheting crimper being discussed here has available a huge assortment of die types; the bow tie type as discussed, and a non-bow tie type that is intended for non-insulated terminals. The latter has symmetrical dies.
Stein, I really do try and pay attention in class...
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