The dust collection chute directing sawdust from the blade to the collection bag at the back of my old Delta 10" Miter saw (Model 36-075) was made of a thin rubber material and after over 20 years of use finally disintegrated. The part is no longer available from Delta or other parts suppliers. Fortunately, on Etsy.com I found a small business "Dirty Dog Woodworking" that makes a 3D printed plastic replacement. I ordered one and it works great. Photo below of the installation show the replacement dust chute in blue which fit perfectly and seems much more durable than the thin rubber part it replaced.