Induction Heater ZVS Coil Winding Jig

thingiverse

After getting fed up with wonky, uneven coils and having to use either my fingers (painful) or pliers (damaging) I decided enough was enough and made a jig to allow me to wind coils MUCH easier, and with a degree of customisability in terms of spacing of the windings. The coil is designed to be around 18.8mm internal diameter (which is about right for the 16mm OD glass tubes most people use in their heaters and is ideal for the VapOven kit. It's designed for use with coil wire around 2.2mm in diameter, which is usually what comes with the 12V ZVS Module units. I've included a couple of holes which can be used with zipties or twist-ties etc to hold one end of the coil in a stationary position which helps stop the whole coil twisting around when making your wraps. There is a handy handle at one end with indents for fingers/thumbs for added grip and comfort. The middle is hollow to save filament :) There are flat edges on either side. This is to allow you to decide your own coil spacing. Want a more spaced out coil? Just skip a row and carry on with the next one! Don't worry about using supports, it should be fine without.