gnoahhh - thank you very much. It is very generous of you taking the time to impart your knowledge. Back when I had the time (in my 20s) I sanded down one car (MGB) and one motorcycle (Triumph Trophy 500) and became aware of essential backers for sand paper with the hard rubber block (found at most every hardware and car parts store) being the most often used. Could you use one of these if cut down into smaller blocks? My father got into woodworking after he retired and made a number of useful sanding tools by cutting such blocks down to smaller sizes. Many thanks again for your help.
