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On 7 Mar, 18:44, wrote:


How are brushes held in the cylinder of the paintbrush version?

Looking into the 'brush' device, you'll se two tightly wound steel(?) spring
'thingies'.
The brush handle has to be forcibly pushed past this 'obstruction'. small
(thin) handles are easy; big (thick) handles are harder to push past the
springs. The manufacturer's blurb claims that the secret is in the springs
which took years to perfect. The springs exhibit a self-cantering tendency
for the brush and limit the amount of 'wobble' experienced by the drill
holder (YOU).

As I've mentioned in another post - the springs will turn any hollow handled
(aka cheap) brush into a collection of shards .

--

BRIAN