Gareth Magennis wrote in message
...

"N_Cook" wrote in message
...
Blown horn - anything to check on , in the way of ultrasonic oscillation
as
went during normal use?
How to break the cab in 2 ? Deep recessed screws tightly bound in dense
plastic. I know , from similar situations, it is quite likely to shear
the
screws with the undoing torque required. Soldering iron heater slid over
the
end of the long shaft screwdriver to locally melt the plastic ? Dropped
power to it for enough heat but relatively low temp to penetrate the
length
of the screw ?



No, just a decent long screwdriver. I have never sheared a screw in any
of
these style of plastic cabinets. Or even come close.




Gareth.




I've broken one years ago , with same sort of stiction? / excessive torque
,in a power drill, long screw into hard plastic.
These Mackie screws, 17 of them, (2 slightly shorter either side of the bass
driver) , in my opinion , are bordering on the threshold of shearing without
such heating, they deliberately used undersized holes probably.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/