I have been trying to find the video Cody Grivno did a few years ago where he showed how to make a low-profile forest background using, I think, a furnace filter. I am not talking about making furnace filter pine trees. This was more like cutting a continuous row of tree tops out of filter materials and placing it directly against the backdrop. Any clues where I can find this? Or am I just imagining this technique? I was unable to find this video searching on MR’s website.
I remember seeing it on Rehab My Railroad.
Thanks, AEP528, at least I know I was not imagining it. I tried searching through Rehab my Railroad but have not found it yet. But thanks for the tip.
It was on Chuck Sable’s model railroad, but the episode descriptions don’t mention it. The material was more like the scrubbing side of a sponge than a furnace filter.
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What I use, the idea of which I would swear came from that video, are green 6” x 9” ScotchBrite pads, which you can see that I installed here to hide the blue backdrop from being visible through a few rows of model trees.
Please disregard the water main and sewer pipe that I navigated around to add a staging yard. 
DFF
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I may be misremembering, but I think Cody had a roll of the material. I did a search for “green scrubbing pad roll” but couldn’t quickly find one in a color similar to the Scotch-Brite pads.
Found the video! As you guys correctly recalled, it’s from Rehab my Railroad. Go to about 2:15 of Episode 1. Cody used a different product than me, so I now have no idea of how I settled on the ScotchBrite pads, unless I just substituted them. I don’t remember now.
Cody used a product called Mikra Mirlon gray scuff pad from Beaver Tools. Item no. MK18-573-488.
Hope this helps,
DFF
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Thanks Guys, I found the original Lance Mindheim article and am printing it off now. Next stop, my local auto supply store.
Can someone explain why the expensive Scandinavian Mirka Mirlon pads accomplish something generic flat scuffing pads from Wal-Mart… or ScotchBrite pads… don’t?
And the latter are already ‘green’.
I’m guessing that’s what he had available if he works on cars too. I used to work in an auto body shop and that’s what we used despite my boss otherwise being a major cheapskate. I actually still got a couple rolls of Mirka 5 inch disc sandpaper leftover from when the shop closed a few years ago.
Do the generic pads come in a roll of only the scrubbing material? No, no they don’t.
At the store they come in a pack of flat sheets, that can be joined or wired end-to-end in strips. Or cut to be laid or pieced over scenery.
Any number of vendors sell Scotch-Brite by the roll. And a quick search found this:
Why yes, yes they do.
Hmmm, maybe I was wrong. It appears that the forums still do have a sense of humor. 
Rich
Then again, maybe not.
Rich