3 Simple Ways to
Share What You Make

With Instructables you can share what you make with the world — and tap into an ever-growing community of creative experts.

PhotosPhotos

Share one or more photos of a project, recipe, or whatever you've made, quickly and easily.

Step by StepStep-By-Step

Share your step-by-step photos with text instructions of what you made so others can do it too!

VideoVideo

Share your how-to video. You'll need your embed code from a video site such as YouTube.

How to build a Tesla Coil

Step 3Wind the Secondary

Wind the Secondary
«
  • 3397574574_4f6784de72.jpg
  • 3396761267_303ae42d9d.jpg
  • 3397585512_0e4e0e3afc.jpg
  • 3396784069_8381cda77d.jpg
  • 3396767949_95971964ed.jpg
Put a small slot into the top of the pipe to wrap one end of the wire around. Slowly and carefully begin to wrap the coil, making sure that you don't overlap wires or have spaces. This step is the hardest and most tedious part, but taking a lot of time will yield a very nice coil. Every 20 or so turns, put a ring of masking tape around the coil to act as a barrier if the coil starts to unravel. Once finished, wrap a tight piece of tape around the top and bottom of the coil and spray it with 2 or 3 coats of enamel.

Tips:
  • I built a rig for winding my coil that consisted of a microwave turntable motor (3 RPM) and a ball bearing.
  • Use a small block of wood with a notch in it to straighten the wire and tighten the coil.
« Previous StepDownload PDFView All StepsNext Step »
29 comments
May 10, 2011. 8:41 PMcclark2 says:
im doing this as a sixth grade science project and im wondering what you meant about the slot in the pvc. THIS IS IMPORTANT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! this is my first tesla coil, so im just lost.
Jul 29, 2011. 10:39 AMlis.tesla says:
i built one for my science project in sixth grade and one against works bombs and stuff... igot first place
May 27, 2011. 5:06 AMphooper1 says:
get your parents involved in this
May 14, 2011. 11:05 PMspark light says:
All he is saying is have a way to secure the wire when and where you start as this will allow you to wrap it.
Make sure you wind it tight and avoid and correct overlaps if at all possible.
May 20, 2011. 9:12 PMmakincoolstuff says:
i found electricians tape works better than masking tape
May 23, 2011. 11:09 PMmakincoolstuff says:
does it matter if you leave a space or over lap?
Jul 14, 2009. 5:14 PMBenthomash says:
What is the enamel for??
Aug 9, 2009. 7:45 AMlwil says:
extra insulation and adhesion
May 6, 2011. 8:23 PMcclark2 says:
im doing this as a sixth grade science project. how do i find these various peaces of wood?
Apr 29, 2011. 4:18 AMhackoa says:
How many turns?
Nov 10, 2009. 8:48 PMTurtles never lie! says:
why do you need to connect the wire to the top? (the slit)
Mar 14, 2011. 7:03 PMbfriesen-1 says:
to hold it in place so that it won't unwind. duh.
Feb 15, 2011. 8:02 AMalfareifaldy says:
how big the diameter of the magnet wire? and I'm having trouble getting NST Transformer, can I use the drivers Flyback Transformer?.
Jan 12, 2011. 4:26 PMsixpackwill says:
can i use 24 awg galvanized steel wire instead??? I couldnt find copper wire with that thickness at home depot. Please answer ASAP. thanks!
Feb 14, 2011. 9:16 PMbwang says:
No, galvanized steel has no insulation and steel has too high of a resistance.
Jan 9, 2011. 6:38 PMAHW214 says:
How tall (long) is you secondary?
Jan 2, 2011. 2:52 PMmalik98 says:
can i use 14 awg wire
Jan 9, 2011. 6:36 PMAHW214 says:
For the secondary you can't, it is too thick. I think he used 24 awg wire.
Dec 9, 2010. 12:51 PMbigkratzer says:
how many turns did you do and or suggest
Dec 2, 2010. 12:44 PMusername987 says:
What's inside the pvc tube ? and were is it connected i'mn not sure about the connection to make what gos in what and what is the copper tube for need help plzz for my science project ! :) thanks you
May 22, 2010. 11:15 AMel tico says:
how do you make this thing'
Nov 21, 2010. 7:34 AM4582190 says:
wow
Aug 9, 2010. 6:15 PMTheNuclearWatermelon says:
hey i think i have the same vice as you! is yours an Irwin?
Jun 12, 2010. 3:00 PMArgdeblarg says:
I have 395 feet of wire instead of just 300ft... Is it okay if I use all of it, or should I only use 300ft of it?
Jun 13, 2010. 9:34 PMlolomolo says:
yep use it all or yep use 300ft of it?
Feb 3, 2010. 1:12 PMbear199 says:
or you can just use a screwdriver on VERY slow
Feb 3, 2010. 1:32 PMbear199 says:
a machine driven... lol
Dec 8, 2009. 3:18 PM123456 says:
What did you use as power supply and how did you hook it up
Nov 6, 2009. 5:53 PMRATM.Rulz says:
How long should the PVC Pipe be?


Pro

Get More Out of Instructables

Already have an Account?

close

All Steps Viewing
View all steps of an Instructable on the same page when you're a Pro Member.

Upgrade to Pro today!
79
Followers
6
Author:DevCoder(My Hompage)
Devin is a cool guy, eh doesnt kill himself while doing stupid things, and doesnt afraid of anything.