DIYfilter - What is this disk insert called?
June 30, 2010 5:49 AM Subscribe
I've got some cardboard tubes from plastic sheeting - in all different lengths and widths. I want to be able to put shelving on them - so I'll be needing a round disk that'll fit in about 1/2 an inch snugly and have a screw protruding so I can then bolt the wood to the screw and tube. What is this disk called and where can I get them online?