IWISS SN-025 F Crimp D-sub, Dupont Connector Crimp Tool AWG 28-18(0.1-1mm²) for Harwin Amphenol MINI-PV Connectors Molex KK 396 Micro Timer Connectors

Purchased to crimp Molex KK 3.96 terminals, works very well but the tool is a bit awkward to use, particularly when crimping thicker wires. Overall it's a very good tool and will hopefully become easier to use with experience.

As far as I can tell, iCrimp/IWISS is the only company that makes the SN-025 crimper. The SN-025 crimper makes “B” profile crimps over the stranded wire and “O” profile crimps over the wire insulation. It took me three days to learn how to do use this crimper properly. This type of crimper does not come with any instructions whatsoever. The available videos and tutorials are often conflicting or inaccurate, and therefore not very helpful. The result is that you need to do a lot of research, practice, and trial and error, before these crimpers can be used effectively. Specifically, proper use of these crimpers requires that you determine:• the best arrangement for the crimper’s removeable jaws• which slot is most appropriate for the wire gauge and connector you’re using• whether to place the connector in a valley or on top of a tooth before crimping• how far the wire and connector should be inserted into the jaws• how to keep the components properly positioned throughout the crimping process• the best crimping pressure for the wire gauge and connector you’re usingInterestingly, even though I'm left-handed, the tool arrived with the jaws arranged in the way that's most practical for me. That's a rare treat for lefties. If you decide that you want to try a different arrangement, the jaws can be removed and replaced by using a 2.5mm hex wrench.After a lot of trial and error, I now achieve excellent crimps of Dupont style male and female connectors with 22 and 24 AWG wires as follows:1. Adjust the crimper to the third force setting (counting from the highest setting).2. Remove approx. 2mm to 2.5mm of insulation from the wire.3. Use a nipper to remove the connector from the sprue, and then use the nipper to remove the extra metal from the bottom of the connector.4. Insert the wire into the connector so that the wire’s insulation butts up against the conductor tabs.5. Use needle nose pliers to partially crimp the insulation tabs onto the wire’s insulation. Crimp just enough to hold the wire in place. Don’t try to make a complete “O” crimp.6. Insert the wire and connector (plug end first) into the crimper from the left side (again, I'm a lefty):a. Place the wire and connector on the front tooth of the lower jaw.b. Position the tabs and wire facing upward.c. Make sure that the insulation tabs are located completely to the left of the line that runs down the center of the lower jaw, that the conductor tabs are located completely to the right of that line, and that the plug section is entirely outside the crimper jaws.7. Squeeze the crimper handles as far as they will go, and they should release automatically. If the handles don’t release automatically, its probably a sign that the crimp force is set too high.That's it. I hope this helps someone.

come nicely packaged(if not a bit excessive), feel and seem well built, crimps Dupont extremely tight even on tiny 22ga wire. just like the ones i used back in robotics club.

There is a learning curve with this product, but once you figure out the right position to place the connector, it works great.

Work as intended.