[Speedslug]

If your turn them the only ones you really have to remove marks from are the ones along the outside edges and the top of your stack.

They have PVC pipe cleaner that pretty much does the trick and the lager cans are the better value.

PVC will cut just like wood on power tools and a spray bottle of water will cut most of the static to after you vacuum up the chaff.

A "carpet knife" with the hooked edge works really good at removing the burr from cutting the pipe with saws but a straight edged razor knife will work too.

But one of those "ratcheting hand cutter tools" is worth the money if you can either get the gorilla guy in your life to do it for you or get a couple of long metal pipes to fit over the handles of the cutter to give the leverage that a thousand cuts is going to require.

The ratcheting cutter will not do angles though.

The ratcheting cutter will still leave some very crisp edges so you will want to give them a slight chamfer with something.
A packet of sand paper will do the trick to just take a bit of the edge off.