what would be the cost saving of rebuilding them myself, not that I have done any before, but I have been reading up about it and it would seem a daunting task, but something I would like a go at.
It depends on how much of the work is done by the wheel builder?
If you wanted the wheel builder to do a total job of stripping the wheels, blasting and painting/polishing the hubs, rebuilding the wheels with new rims and spokes then the labour charge could easily reach around £200-£300 for a pair of wheels?
Here's Hagons wheel building price list:
http://www.hagon-shocks.co.uk/HagWheelPr.htmWheel building isn't the 'black art' many people think it is. If you consider yourself to be a reasonably patient and methodical person, and able to understand how loosening or tightening any spoke moves the rim and alters tension in the other spokes, then the job shouldn't prove too difficult.
It will be necessary to make notes of the rim to hub offset measurement, spoke lengths (as inners and outers are often slightly different lengths) spoke diameter (gauge), nipple diameter, spoke head angles etc (primarily so you are able to check you have been supplied with the correct spokes and nipples) and draw sketches (or take photos) of the spoke patterns.
When I strip a wheel, I always mark the hub and rim (or make a note of which hole, if the rim is being replaced) at either end of one (normally inner) spoke, preferably choosing an inner spoke nearest to the valve hole in the rim, so that when I begin to re-lace the wheel I can fit the first spoke in that same position between the two marks on the hub and rim, that way I know I'm starting off with the rim and hub correctly positioned in relation to each other.
After the wheel is assembled, you will need to make up some sort of wheel building jig so the wheel can be accurately trued-up, or, if you can raise the bike up to a good working height with mudguards removed, you can re-fit the wheels and use the bike as your truing jig with truing pointers attached by rubber bands to the fork legs or swinging arm etc..