3.5mm Bullet Connector Solder Helper

thingiverse

After watching numerous videos "how to solder bullets", there are a significant number of poorly done ones out there that result in cold solder joints etc... I was searching for something that would keep the wire and bullet steady while allowing the solder to flow freely, which is widely considered the best method of soldering bullets. Some individuals might suggest using helping hands, but I've found their jaws can leave unsightly marks on the wire housing; these, however, do not have this issue as they are made from plastic and thus don't conduct any heat away from the soldering process. Instructions: UPDATE: I almost forgot to mention that support during the print is essential for the arms that cross over both sides in order to hold the wire upright. Here's a video that describes the optimal way to solder bullets; I do it slightly differently, by utilizing a tip on the outside of the cup: https://www.youtube.com/watch?v=n_nr--nwGPo As long as the wire is touching the bottom of the cup when you apply heat, it will effectively heat up your tinned wire. It's essential to use small diameter solder to fit snugly in between the wire and the cup; I also add a small drop of liquid flux into the cup, although it's uncertain whether it's truly necessary, as it appears to work well nonetheless. Print 1 unit each of "Bullet Connector Arm.stl" and "Bullet Connector Column-Helper.stl", using a moderate infill level of 15% with 2 shells. The Helper (an integral part of the column stl) can be utilized in a twisting motion to open the jaws. After printing, you will require a piece of oak or pine wood - either one works; utilizing a compass draw a half-circle approximately 98mm (radius) from the center point. Fasten the arm on top of the column using a #8 screw, positioned directly over the center point utilized for the compass drawing. Drill several male/female holes along the line you just drew, spaced approximately 15mm apart. I believe mine were around 10mm deep, with the depth varying slightly between male and female holes. Use the following drill bits: Male Bullets - #24 drill bit - .144" Female Bullets - #18 - .169" After soldering several bullets, it will be necessary to remove any flux remaining within the hole. For female bullets, the hole should provide a snug fit; males, with their spring-tipped ends, can be slightly looser.