“How I Added Dust Collection to an Old Delta Planer (TP400LS) – Obsolete Part Fix

If you own an old Delta TP400LS planer, you already know the dust port is discontinued. In this video, I show how I built a custom 4” dust collection shroud that fits perfectly and actually works. This DIY dust-collection retrofit uses the modern Delta 50-359 port as a template and a simple metal adapter plate to solve a problem that thousands of woodworkers still have. The factory dust port for the Delta TP400LS planer is obsolete and nearly impossible to find. The original shroud just sprays chips everywhere, making a mess in the shop. In this video, I walk through how I converted my old Delta planer to work with a proper 4" dust extraction port and discuss the following: • Delta 50-359 modern dust port • A metal plate adapter • UHMW spacer for clearance • Custom mounting points • Airflow relief cut for better suction This retrofit keeps the factory safety spring functional and mounts securely using existing screw locations. If you’ve been searching for: Delta TP400LS dust collection Delta planer dust port replacement Old Delta planer dust extraction — This fix worked for me. Tools & materials used: • Tin snips • Dremel tool • Hand File • Table Saw • UHMW plastic (or cutting board alternative) • M5 x 80 Nylon Nut • M4 x 25mm Thumbscrew • M6 x 12mm Thumbscrew This is not the easiest project, but it is absolutely worth it to finally keep the dust under control in the shop. Chapters: 0:00 The dust problem with old Delta planers 1:20 Using the Delta 50-359 as a template 3:45 Cutting the metal adapter plate 6:10 Modifying the plastic shroud 9:30 Mounting metal to the port 12:10 Fixing the fitment issues 13:00 Adding the UHMW plastic spacer 16:00 Marking and drilling the bottom holes 19:30 Trimming for a flush fit 23:00 Improving airflow with a relief cut 26:30 Adding the seal 28:40 Test run results 29:30 Lessons learned 32:20 Important safety spring detail