The latest addition to the line of 3D printer accessories is the FilaWinder, a tool for winding your filament neatly onto a spool. If you’ve abandoned buying your filament by the reel in favor of making your own from cheaper pellets—such as the Lyman Extruder, the Filabot Wee, or other alternatives, including the winder’s companion product, the FilaStruder—then you’ve likely had to roll everything up by hand, perhaps after it flopped around on the floor first.
The FilaWinder spools for you while the filament extrudes, using a sensor to adjust the winding the speed to match extrusion rates as well as running it through some PTFE tube to gently coil it as it moves along. Perhaps most important, the FilaWinder provides a guide arm to direct the filament back and forth across the reel as it spools up, to keep it evenly distributed. Swing by their Thingaverse page for a list of printable pieces and their assembly guide can be found here, as well as on YouTube. You can see an overview video of the FilaWinder winding away after the break.
Continue reading “The FilaWinder”
[Dino Segovis] is at it again! For this week’s installment of his “Hack A Week” series [Dino] is holding a guitar pickup winding 101. Professional guitar pickups can cost hundreds of dollars, but are all essentially a permanent magnet wrapped in a bunch of wire. Using some cheap headphones, magnet wire, and a spare bolt [Dino] produces his own pickup and throws it in a one string blues guitar. This is a great beginner’s project as it involves only a few very easy to find parts and touches on some interesting concepts such as inductance and magnetic flux.
The premise is really simple: Sandwich the headphone magnet between two plastic discs to make a spindle, hot glue a 1/4″ bolt to the spindle, connect to a power drill, and wind a few thousand loops of magnet wire onto the thing. Hook your coil up to an amp and lay down a jam.
We might be tempted to add a counter to the rig using a reed switch connected to the “=” key of a cheap pocket calculator, and a magnet glued to the bolt. We have also seen a more complicated automated spool winder but [Dino] is keeping it nice and simple.
Check out the video after the jump to hear [Dino] go all Seasick Steve on us.
Continue reading “Guitar pickup 101″
[Robert Pickering] shares his automated guitar pickup winder with us. He built it for his senior project at Old Dominion University. Two stepper motors are used to wind the magnet wire around the pickup hardware. The unit is PIC based and about six minutes into the video (embedded after the break) you can see that he used wire wrapping for this build. Curious, one of the comments on our latest Hackaday Links mentioned that wire wrapping was rarely used anymore, but here it is anyway.
We especially like the limiting switches he’s using on the traverse mechanism. There are momentary push buttons on either side of a carriage which are depressed when a drywall screw in the sides of that carriage hits them. This makes for very easy calibration because the screw can be raised or lowered with just a bit of screwdriver work. Well built and documented, we’re sure he’ll get some high marks on this one. Continue reading “Automated guitar pickup winding”