On Sunday, March 27, 2016 at 7:28:32 PM UTC-4, wrote:
I'm curious to know if experienced glider sanders think the 3m trizact is worth the money they charge for it. I can get more than twice the number of 3000 grit 3m purple sanding disks for the same price. They don't have the foam backing - but I can fix that. Is the trizact 3000 more than twice as good as the regular stuff?

We think so in our shop.
Report back on your results with cheaper alternative.
UH