Dude get a job and you can buy decent parts Plus cant you take your wheel into school and grind it for a project? Just some advice, when riders recommend you to grind a rim I would take their advice esp because they have YEARS of trials experience and you have ZERO...... You will progress a hell of a lot quicker if you have a grind and save your ass bone!!! Trust me if grinding was available when I started I now would be able to poo properly....hmm The person who is preventing you from grinding your rim show them this message... they will understand. End of the day its up to you...not mum, dad, next doors dog....YOU!!!