One ring with slider type

This toroid winder accepts smaller cores than my two-ring winders and simplifies the number of rings and bearings.

Update: Since this is a design derived from my two ring design, the position of the counter sensor isn't optimal. I've added a new version slider to insert the magnet and “portatensor” to accommodate in a new position the inductive sensor. This improves synchronization with the movement of the core toroid and the wire threading.

Slider smooth friction and guide retention are important for proper operation and it has to be in accordance with the diameter of the wire to be wound.

Slider adjustment is achieved by bending the slider wire. Better a steel wire.

Tips: Fine sandpaper the ring area so the slider moves smoothly including the split sector

Schematic electronic compatible from compact toroid winder here:

[https://www.printables.com/model/702311-compact-3d-printed-toroidal-coil-winder-video-upda](https://www.printables.com/model/702311-compact-3d-printed-toroidal-coil-winder-video-upda)

Material Slider Toroid Winder:

1x JGB37 geared dc motor at 7rpm for rotate toroid

1x JGB37 geared dc motor at 500rpm for geared ring

3x Polyurethane flat roller (6x30x30mm) with two bearings

3x U0524 (5x24x7mm) nylon bearings (Ring guides)

4mm cylindrical neodymium magnet for lap counter

M2.5 Nut heat brass insert Length 3mm

M2.5 Button head screws

M3 Button head screws, washer

M3 Grub screws

M4 Screws

M5 Screws, nuts and washer

M6 Screws, nuts and wide washers

0.8-1mm steel Wire for friction slider. About 3cm long

microfiber fabric for guide

12mm NPN inductive proximity sensor

dh48j digital counter

pwm dc motor control