As you gain experience with your dual action machine polisher, you'll discover that the type of backing plate you use can make a noticeable difference to the polishing process in terms of comfort and control. Because these factors have a heavy bearing on the quality of the final result, we recommend using semi-rigid backing plates, as they are soft enough to help to dampen vibration from the machine yet firm enough to enable a reasonable amount of downward pressure to be used when heavy correction work is being performed. Out of all of the backing plate designs we've tested, we currently favour those manufactured by Lake Country, as they are extremely well made and yield consistent performance across the four different sizes on offer.
Lake Country Dual Action Backing Plates are constructed from semi-rigid polyurethane (PU) and strike a good balance between comfort and control (fully flexible plates soak up vibrations well but limit how much downward pressure can be exerted, whereas fully rigid plates do the opposite). Further benefits of the Lake Country design include the hook and loop fastening material being moulded into the plate, which eliminates the risk of delamination, and internal steel reinforcement, which gives superior strength whilst keeping overall weight down. The steel 5/16 UNF threaded post fits all popular dual action machine polishers, while the hook and loop fastening material enables quick and easy pad exchanges. Four different sizes are currently available.
General usage notes: (i) always switch off your machine at the mains before fitting or removing a backing plate; (ii) always ensure that you tighten the backing plate sufficiently, but without over tightening it – a half turn of the spanner after it first pinches tight is usually sufficient for safe and effective use, and; (iii) always use an appropriate sized backing plate for the pad you are using – the pad should always protrude past the edge of the backing plate, never the other way around.
|Construction:||Polyurethane (colour may vary)|
|Dimensions:||(70 mm) ø 70 mm x 15 mm|
(90 mm) ø 90 mm x 15 mm
(125 mm) ø 125 mm x 15 mm
(150 mm) ø 150 mm x 15 mm
(diameters may vary by +/- 3 mm)
|Thread size:||5/16 UNF|
|Suitable for dual action polishers:|