Bill Clemmons has one. I think it came from an auction. It would be pretty easy to copy.
You'll need to turn on closed captions to understand this YouTube, but this is very low-tech, low-cost, and very precise way to do horizontal machining with scraps of plywood/mdf and t-track. I found his blog, and he details the dimensions. You'll need to translate from Japanese: 目盛り精度を10倍に変換する新しい昇降式横軸加工ジグI was thinking of something that used a drill.
THis is along the lines of what I'm look for. Some good ideas.You'll need to turn on closed captions to understand this YouTube, but this is very low-tech, low-cost, and very precise way to do horizontal machining with scraps of plywood/mdf and t-track. I found his blog, and he details the dimensions. You'll need to translate from Japanese: 目盛り精度を10倍に変換する新しい昇降式横軸加工ジグ