Making coils with screws

[Super-Shiny]

Been testing making coils with screws in all different sizes, they come out really professional by using something like these: www.accuscrews.co.uk/11-countersunk-flat-head-screws?#/overall_length_l-20mm

Just twist it around the thread and twirl it off

[lenny59]

I saw this being done on youtube

I tried it with a screw from a wall socket......the coil diameter was too wide in my opinion

what diameter are the screws in the link......Just gives the length if I'm not mistaken

Also how are you findin getting the wick in place (Beading needle???)

[Super-Shiny]

Diameters are from M1.6 upwards, and around 16mm length upwards.

I twirl it onto the wick, fiddly but it works

[lenny59]

Is that 1.6mm then ?

[Super-Shiny]

Mar 24, 2013 22:02:27 GMT lenny59 said:

Is that 1.6mm then ?

Yep

[Hampton]

Mar 24, 2013 21:18:41 GMT lenny59 said:

I saw this being done on youtube

I tried it with a screw from a wall socket......the coil diameter was too wide in my opinion

If you pass the wire over a flame before coiling it will take the springiness(sp) out of it and hold the diameter better.

[Greigster]

I had read in the past that an M2 bolt could be used and a tip was to get a white plastic M2 bolt which made it easier to see the Kanthal. I searched around locally but could not find a white plastic one
I don't know if the little plastic bolts that hold your car number plate on, is the right size?

[Hampton]

Mar 25, 2013 9:21:56 GMT Greigster said:

I don't know if the little plastic bolts that hold your car number plate on, is the right size?

M6 unfortunately. I've seen M3s used on motorcycle fairings/screens.
For smaller you might try the internals of an old CD/DVD drive. ISTR the plastic worm drive for the head was quite small.

[Super-Shiny]

Mar 25, 2013 9:21:56 GMT Greigster said:

I had read in the past that an M2 bolt could be used and a tip was to get a white plastic M2 bolt which made it easier to see the Kanthal. I searched around locally but could not find a white plastic one
I don't know if the little plastic bolts that hold your car number plate on, is the right size?

Got loads here, just need to find some that are in stock

www.componentforce.co.uk/category/398/nylon-nuts--amp--bolts

[robby]

Great idea, should be possible to find a screw that just the right size so that you can get the wick in without any strangulation. When the wick get`s wet it will swell a little for a perfect fit A nylon one should be great, slip it off easily

[Super-Shiny]

Got loads HERE (EBAY)

2mmx25mm
3mmx25mm
4mmx25mm
5mmx25mm
6mmx25mm

It's endless......

Might get myself some 2mmx25mm and 3mmx25mm to see how they compare to the metal ones i have

[mybad]

A 2mm thread will give you a 1.7 internal diameter

4mm thread will give you a 3.2 internal diameter

If you use a brass screw you will be able to see your windings better.

[lenny59]

The White Nylon ones are a great find Romlee

Tried with metal and with my eyes its hard to see

Ordered 2mm X 25mm . . . .worth a go for 2 quid

mybad.....Another good idea with Brass

[Super-Shiny]

Mar 25, 2013 13:23:04 GMT mybad said:

A 2mm thread will give you a 1.7 internal diameter

4mm thread will give you a 3.2 internal diameter

If you use a brass screw you will be able to see your windings better.

Do you know of a online calculator where i can input the mm's and it will tell me the internal diameter?

[mybad]

try google ,, thread chart or something.