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  • greentree89 commented on Roddy Scott's instructable The Coil Lamp5 months ago
    The Coil Lamp

    Hi these coil lamps are fantastic and I wanted to thank you for sharing this wonderful idea and method of constructing it. I have already made 3 of these and they look lovely around the house.I just wanted to share an alternative with how I've decided to make them which seems easy enough with a bit of practice. This method is certainly not superior but may just appeal to some people more.I also bought 3M Length 8mm copper tubing with 2 core gold flex cable 0.5mm size.The cables overal diameter is just below 8mm and slides perfectly into the tubing. I did not have the patience to pack the tubing with crushed sand or salt and bend it then feed the wire through the tight coils so I came up with another method which seems to work fine.First off when the copper tubing is bought it is usually...see more »Hi these coil lamps are fantastic and I wanted to thank you for sharing this wonderful idea and method of constructing it. I have already made 3 of these and they look lovely around the house.I just wanted to share an alternative with how I've decided to make them which seems easy enough with a bit of practice. This method is certainly not superior but may just appeal to some people more.I also bought 3M Length 8mm copper tubing with 2 core gold flex cable 0.5mm size.The cables overal diameter is just below 8mm and slides perfectly into the tubing. I did not have the patience to pack the tubing with crushed sand or salt and bend it then feed the wire through the tight coils so I came up with another method which seems to work fine.First off when the copper tubing is bought it is usually packed in a pancake coil and can be stretched out loosely into a wide vortex coil. I prefer not to straighten it all out as it seemed to get weaker the more you bend it back and forth also it is relatively easy bending it into a coil when its already partialy coiled but thats just my opinion.Its at this point I tried to just feed the flex through the tubing.At first I thought it would work easily but about a third of the way in there is too much resistence to push the flex any further. I then stripped some insulation back from the cable and securely tied a piece of durable string to the exposed copper flex in a tight wound knot. I then used a hoover to suck the string through the tubing. The string has to be fed through the tubing by hand while the other end of the tubing has the hoover noozle over it. Once it is through I tried feeding the flex into the tubing. (Make sure you pull the string while feeding the flex in so the flex does not overtake the string and create more resistence) Even with the string pulling the flex through you will get to that impossible resistence point where it will not budge any further. This is where I discovered you can feed it through by bracing the coil lamp and pulling the string while simultaneously wiggling the flex forward by pushing it and wiggling it very quickly. The way I did this was tie the string to a post or something that won't move and while holding the copper tubing, pull back away from the post while also pushing and wiggling the flex very quickly into the tubing.It takes a bit of practice but once you get the right pressure and timing, the flex will fly through the tubing with no resistence all the way through and will take very little time but the pulling of the coil and the pushing of the flex must be done at the same time. Now with the flex all the way through the tubing you can now bend it into the coil size you want.I used a huge camping/picnic flask for my coil former. Wind the coil tightly around the former but when bending the tubing with your hands make sure to have your hands right up against the cylinder former (flask) placing pressure along the tubing right nex to the former. If you try and bend the tubing further away from the cylinder it will simply dent and deform.For the U turn bend where the bulb holder is inside the coil I bought a 8mm tubing pipe bender for this. Keep in mind that is is important to do the U bend first then fix the bulb holder THEN bend the tubing into a coil. I opened the flask and had the U bend with the holder fixed and placed inside the flask while I formed the coil around the flask.Once its all done just tweak the coil by hand to make it is all central, balanced and spaced apart neatlyAnyway hope this helps! Sorry if I did not make much sense but ask any questions and I will try my best to help more! :)

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