The title says it all, but I have gone through maybe 20 pcs in the past year of 2'x3' aluminum honeycomb because the PETG residue is so dirty and sticky that it actually clogs up the honeycomb within a week of heavy use. .
Has anyone had any luck cleaning this crap off the honeycomb, otherwise I am in for another expensive order of new stuff very soon. It seems impervious to water, Spray Nine and a few other things
Thanks
Mike