Another Inside the HDR Thread: Dissecting my HDR

[steven chiverton]

iron i brought a peace once looked like steel and it didnt do good for an electromagnet best use plain mild steel bars not 1 inch diameter by 7 inches long make it 2 inches diameter by 11 long then make some spacers and space them apart so you have 7 inches to wind your coil on so you have some ends sticking out forget the crappy t bar section and use polyimide capton tape high temperature stuff between each layer of 21 awg wire

 

[Stanley]

The info you seek is here. In many threads on the site. Try doing a search for Gibbs electromagnet.

funny (in many threads) they are thousands of them

 

[Username]

I wanna make sure I wind it right and know which way should face up so I don’t end up in the “negative dimensions”

 

[Stanley]

my brotha i remember you showed up looking for Steven just like me and just like me you are bulding your own HDR i got all the parts i just dont have the time to build it

 

[Stanley]

i am trying to get info on how to properly wind the electromagnet

 

[Num7]

Maybe @DoctorZ can explain how he makes his electromagnets.

 

[Num7]

I asked DoctorZ about the electromagnet, and here's what he told me:

6-inch steel bar, regular iron, there are twelve layers of winding, the bar is shaped like a T it takes between 800 and 1200 feet of 22 to 24 gauge transformer wire. Wind it clockwise, but it seriously doesn't matter.

Hope this helps!

 

[Stanley]

I asked DoctorZ about the electromagnet, and here's what he told me:

6-inch steel bar, regular iron, there are twelve layers of winding, the bar is shaped like a T it takes between 800 and 1200 feet of 22 to 24 gauge transformer wire. Wind it clockwise, but it seriously doesn't matter.

Hope this helps!

i wish i had a picture of where to start winding on the core

 

[Einstein]

i wish i had a picture of where to start winding on the core

Do you have some kind of winding jig? I had a metal lathe to use to wind mine. The iron core was 7" in mine. I started winding at 1/2 inch in and wound for 6" then back again to make one layer of 7 needed. Since I made mine I've found out that Gibbs put tape between each layer.

 

[Stanley]

Do you have some kind of winding jig? I had a metal lathe to use to wind mine. The iron core was 7" in mine. I started winding at 1/2 inch in and wound for 6" then back again to make one layer of 7 needed. Since I made mine I've found out that Gibbs put tape between each layer.

now you are making cense Einstein ( finely ) please tell me from where did you start winding from the front of the core or from the back ?