Building a Heavy Duty Tailstock Chuck for the Megabore Lathe | Part 1

A lathe this big needs a serious revolving tailstock chuck, and there’s nothing off the shelf that comes close. So we’re building one from scratch. Before getting too far into it, we take a look at the chucks we will be using. Both a 3 jaw and 4 jaw are unpacked and inspected to see what if they’re going to work with the build. Early on, the 4 jaw raises a few concerns. The overall quality isn’t what we expected, and the back mounting face won’t work either so we decide to order a different 4 jaw chuck. With that worked out, the focus shifts to getting the main body underway. A large 1045 hollow bar is set up in the lathe, with the OD rough turned before moving onto boring the ID. Material is intentionally left for final machining, as the welding process will pull the part out of shape. Once that stage is complete, a weld prep is machined and the hollow bar is set up onto a 410mm round plate. The main body is then welded using flux core wire on the welding rotator, ready for final machining in the next stage. This is just Part 1 of the build. The main body is underway, but with the 4 jaw chuck not up to scratch, we now have to wait for the new one to arrive before we can continue. Catch up on the full Megabore series here: https://www.youtube.com/watch?v=kLACjM_xsp0&list=PLUzFN5xVei7U_weLjQJC-15SK0HnFBlO- Join our channel: We upload new videos every Friday at 5pm AEST! If you want to see more of our videos click LIKE & SUBSCRIBE! You can subscribe to our channel here: https://bit.ly/ceesubscribe Want Early Access & Ad Free videos?? Join our Patreon Community: https://www.patreon.com/cuttingedgeengineering Official CEE Merch shop: https://www.ceeshop.com.au Check out our CEE Amazon store and explore our favourite finds that we use in the workshop: https://www.amazon.com/shop/cuttingedgeengineeringaustralia To see more follow us on online here: TikTok: https://vt.tiktok.com/ZSdHhtN4h/ Instagram https://instagram.com/cutting_edge_engineering Facebook https://www.facebook.com/cuttingedgeengineeringaustralia/ About Us: We're a down-to-earth real life machining and fabrication workshop in Australia. We specialise in helping business in mining and earthmoving to keep their machines running smoothly. We love working on broken parts and the bigger the better! We upload new videos every week showcasing machining, welding, line boring, honing and all the other awesome stuff that goes down in our workshop. Learn how we tackle different projects and see the satisfaction of creating something useful. Subscribe to stay updated on our latest jobs and projects! Follow us on Patreon for even more content and behind-the-scenes glimpses or find us on Tiktok, Facebook and Instagram for a chance to connect with us. #australianmachinist #machineshop #machinist #shopmadetool