Easy way to solder center pins, BNC etc
Posted: 07 Jun 2017, 09:27
Frustrated with RG58 BNCs? Try this:
Drill holes in the front edge of your desk, selected sizes to hold different center pins tightly.
Get short lengths of PVC or silicone tubing to keep over the polythene, while soldering. Same length as the exposed dielectric, inner diameter to match different cables. It keeps the hot polythene in shape.
Prepare the cable, push the PVC ring over the dielectric. Tin the center wire lightly, check that every strand gets tinned. Check that it fits into the pin (at least partly) and is not too long. Insert the center pin into the hole in your desk. Wipe clean the iron. Heat the center pin from the side and melt a tiny bit of solder into the hole where the wire goes. NOT too much. If you are reusing a connector, no need to add more solder.
Heat the center _pin_ again while holding the center wire "at the mouth". Cable and pin straight, little force. Elbow on desk helps to steady your hand that's holding the cable. When the solder on the center _wire_ melts, move the cable forward, polythene butt to the pin, remove iron and hold steady while cooling. Remove PVC ring. Tug pin with pliers to catch a cold joint.
Juha
Drill holes in the front edge of your desk, selected sizes to hold different center pins tightly.
Get short lengths of PVC or silicone tubing to keep over the polythene, while soldering. Same length as the exposed dielectric, inner diameter to match different cables. It keeps the hot polythene in shape.
Prepare the cable, push the PVC ring over the dielectric. Tin the center wire lightly, check that every strand gets tinned. Check that it fits into the pin (at least partly) and is not too long. Insert the center pin into the hole in your desk. Wipe clean the iron. Heat the center pin from the side and melt a tiny bit of solder into the hole where the wire goes. NOT too much. If you are reusing a connector, no need to add more solder.
Heat the center _pin_ again while holding the center wire "at the mouth". Cable and pin straight, little force. Elbow on desk helps to steady your hand that's holding the cable. When the solder on the center _wire_ melts, move the cable forward, polythene butt to the pin, remove iron and hold steady while cooling. Remove PVC ring. Tug pin with pliers to catch a cold joint.
Juha