Roderick,
From your earlier post I thought that you had knowlege that should be divulged to us few left that are British product orientated.
I`m a great fan of Burnerd products including the wonderful multisize collets. This is just a preference, I wouldn`t call it a "predudice".
I know for a fact that Rotagrip occasionally put new Pratt Burnerd chucks and sets of jaws out for sale on fleabay at a price that would make a modeller gasp but all is there, the key and both sets of jaws.
Those who buy second hand will probably find that there is no chuck key or inside jaws accompanying the chuck., there must be a place somewhere where all these missing items are floating in limbo!
New Pratt Burnerd multisize collets are still offered for sale in America but as we have learned on this Forum, products with a famous UK name is no guarantee that the company is still owned by UK principals and that the products are made in the UK.
For those that like accuracy then the Burnerd three jaw chuck that can be adjusted to run true ( forgotten the trade name, is it Griptrue?
is the answer but really it`s just like adjusting a four jaw true as it has to be done for every different diameter.
No three jaw chuck, whoever it is made by, will run true to one tenth of a thou throughout its range of travel, so that any old chuck fitted with soft jaws bored to size for the job in hand will beat your rolls royce chuck for accuracy any day!
Personally, I have never allowed myself the indulgence of buying engineering items new, apart from the usual consumables. I use a Burnerd 5" three jaw around fifty years old on a lathe that is the same age. The chuck run out is three thou and if I want complete concentricity then a shim between one of the jaws and the workpiece will usually do the trick.
Please remember that we are talking about amateur modellers on this forum, not professionals.
Jens Eirik, Your name is obviously Norwegian, are you located in Norway or the UK?
Not much happening modelwise in Norway, Seig products are sold here and other clones claiming to be manufactured in Germany!
Alan
Can`t get rid of that smiley that suddenly appeared!
Edited By alan smith 6 on 06/02/2013 10:46:51
Edited By alan smith 6 on 06/02/2013 10:54:19