SHOP TIPS #213 Part 1 of 2 Fitting a Backing Plate to a Lathe Chuck tubalcain - YouTube
Lathe Chuck Adapter Plates - Back Plate For Metalworking Lathe
a) Metal Lathe Chuck Backing Mounting Plate 1" ~ 10 TPI | eBay
Bison Adapter Back Plate for 12" Diam Self Centering Lathe Chucks D1-8 Mount, 5.3853" Through Hole Diam, 12.4016" OD, 0.1772" Flange Height, Cast Iron 7-878-128F - 77763563 - Penn Tool Co., Inc
Buck Chuck Company - Lathe Chuck Adapter Back Plate: 8″ Chuck, for Self-Centering Chucks - 06055610 - MSC Industrial Supply
Lathe Chuck Face Plate, Easy to Install Steel Lathe Face Plate, Flat Cutting with 6 Mounting Holes for Industrial Use (14mm): Amazon.com: Tools & Home Improvement