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Final Results
I purchased the sanding pads from Canadian Tire and ran them over the pieces with my cordless drill.
The Blue pads worked great for removing the burrs on bottom side and the grey fine pad worked really well to remove all the contamination from the surface of the other side. The pads seem pretty tough, so I think they should be good to do all of the pieces, but are pretty cheap so if they start degrading, purchasing another set is no problem.
Just be careful to keep the pieces flat while sanding and be careful around the edges to make sure you don’t catch an edge with the sanding pads and bend it up. Putting it on a flat surface and doing the sanding from the top should work pretty good for this.
Next step - sand all the pieces!