well,I didn`t have any joy finding someone with an engineering lathe here,so went on the internet and found an enegineering works at Drayton called F.W.Frost,they`ve been very helpful and for the princely some of £25.00p their making me a new backplate to fit my Dremel chuck/ highspeed flexy drive motor,so in a couple of days it`l be no more looking for that collect that always seems to disapear and I`ll be able to use any size mandril with no problems any more,cheers,
Eric.