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OUT OF STOCK - Chunky Copper Tattoo Machine Binding Posts and Contact Screw Set

£15.00

Front and Rear copper binding posts with M4 copper screw and grub screw for locking the copper contact screw in place. All threads take the standard M4 machine screws.

The rear binding post is threaded right up to the clipcord hole so can be cut down to size. The rear post is designed for horizontal fitting, an additional clipcord hole will need to be drilled in the top for vertical fitting.

(Does not include machine screws or washers for fitting).
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OUT OF STOCK - Chunky Copper Tattoo Machine Rear Binding Post

£5.00

Chunky copper rear binding post with M4 thread. The post is internally threaded righ up to the clipcord hole so can be easily cut down to size if required. They come standard as a horizontal fitting but can easily be modified for verticle fitting by drilling a new clipcord hole in the top. This can be done free of charge if requested.

No machine screws or washers included.
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OUT OF STOCK - Chunky Copper Tattoo Machine Front Binding Post

£6.00

Chunky copper front binding post with m4 threads all round. (Requires a M4 threaded contact screw) Comes fitted with a M4 grub screw for locking the contact screw in place.

No machine screws or washers included.
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A Blog by Ross Vickers

Ramblings of a tattoo machine builder.
This page will contain information that I find relevant to my work, I hope it generates some interest for you in the background work that goes in to planning and building a good quality tattoo machine. I will add sections as and when I get time, to start off here are some comments on tattoo machine coils...

Hand Rolled Coils. Quality over quantity.

Rolling tattoo machine coils can be a real pain in the arse, there's a lot more to it than just insulating some cores and wrapping wire around them. Decent coils need to be constructed correctly, calibrated correctly and fitted with the correct size capacitors. Poorly constructed coils soon become weak & can generate a lot of heat, wiring shorts can also render coils useless in minutes.

Ever wonder why some tattoo machine coils get hot?

If your coils get hot instantly then there is a short in the wire coil or between the wire and coil core. If your machine heats up over longer periods then the chances are that the coils are badly calibrated causing the ferromagnetic material (the core) to be become saturated seriously reducing the magnetic inductance, saturation is caused by generating more flux density than the cores can utilise resulting in a sharp increase in magnetizing current and a sharp drop in inductance. Remnance will then turn the cores (and even frames) in to constant magnets resulting in a further decrease in performance as the armature bar is restricted back by the constant magnetic field. Increasing the voltage on the machine to compensate for the loss in power will only amplify the problem. Natural demagnetisation can occur relatively quickly giving you the impression that the problem machine constantly gets better and then worse.

Saturation also causes heat which is a big issue for electromagnets as the performance of the ferromagnetic material is directly related to the temperature, an increase in heat causes a reduction in inductance. Cores should be run below their saturation level to maintain optimum performance. This is where Faraday's Law comes in to play. It is possible to calculate the saturation point of the core using Faraday's Law, this enables the builder to select the correct size capacitor. Without proper calibration tattoo machine coils can be hit or miss, some may work fine for short periods while others will never produce a good machine running at low volts.
16 April 2009.