Can anyone help me. I want to build a power supply with an output of 20v but with variable amp output.

I am looking in the range of .5 to 15amps (At least 10amps) this doesnt have to have a high precision.

I do a bit of anodising and this is what it would be used for. I would need a complete circuit diagram as i am at the back of the queue when it comes to electronics knowledge.

Any indication of likely cost to build would be useful also.

Thanks