I think I know what she means, it's a semi-rigid plastic. She bolted the two pieces together, so the top one won't slip off the bottom one. I would probably rivet them.... I don't have Pam but have silicon spray so I would use that. I think I'll make one, as I turn my R65 around on the center stand pretty frequently. On my smooth concrete floor it's not difficult, but Sue's invention would be even easier on the center stand. I see those toys around at garage sales and stuff, I bet I can do it for less than 5 dollars!