Certainly the way to defeat the dreaded "petal".
I've used something similar for a while and suggest using sanding sealer before you start sanding - this gives a much better finish and you don't get any tearing of the paper fibres during sanding - the "furry" effect. I usually rough the part down to approximate shape, reapply sanding sealer and finish with fine grade sand paper.
Oh - unless you have no sense of smell don't apply sanding sealer indoors. It's ok when it's dry though.
Regards,
Charlie
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