Trying to rack my brains for something readily available and about 1 - 2 mm thick that I can use for a spacer in a long (well 3m) continuous run.
I have plenty of those plastic spacers (though there never seem to be enough of the size you need) but they wouldn't really do this job. The only thing I've thought of so far is a few layers of dpm but I'm sure there must be other things.
Any ideas folks?
Cheers