It's not really--just some plywood cutouts glued together ,,with a flat bar curved inside,,then just a bunch of small oblong metal squares stacked and super glued together,, for the coil holes,,then just a simple handheld coil winder from some scrap wood,,,it's a slow process 😛😛 check Facebook in anch. Alaska--bill Wallner--I just posted a vid on their,,,,,well hope it works out for you,,,,,,,