I wish to carry out my own experiments with regard to the positioning of 'fan' jets in the brush-head.
e.g.
(1) in the top row of bristles (obviously some bristles will have to be removed),
(2) just behind the top row of bristles,
(3) at the outside edges of the brush (just one tuft of bristles to the outside of each jet).
What cheap brush-heads can I buy from the likes of Wilkinsons that have the same thread as the Vikan rectangular brush? (i.e. will screw straight onto a plastic angle adaptor)
Thanks.
Mike