Completing the Heavy Duty Tailstock Chuck for the Megabore Lathe | Part 3

This is where it all comes together. Part 3 is the final stage of the heavy duty tailstock chuck build for the Megabore lathe. After the fabrication and precision machining, it’s now time for drilling, assembly, and seeing how everything comes together. The bolt holes are drilled and chamfered using the PCD function on the milling machine to suit the 3 jaw chuck, followed by drilling and tapping for the 4 jaw. From there, we move into assembly… and that’s where things don’t quite go to plan. What should be a straightforward bearing install turns into a fight. Even with everything measuring correctly, the bearings refuse to cooperate. We try thermal expansion using the parts washer… but in the end, the hydraulic press has the final say. With the bearings and snap rings installed, the 3 jaw chuck is mounted and the full setup is test fitted onto the tailstock of the Megabore lathe. The build has really come together, but we’re not done yet. To swap over the to 4 jaw, the rear profile of the chuck is machined to suit the backing plate before it can be mounted. Once that’s done, it’s bolted into place to complete the tailstock chuck assembly. The design of this build allows both 3 jaw and 4 jaw capability in one heavy duty, shop made tool. The completed revolving tailstock chuck is now fitted to the Megabore lathe, bringing the full build together and one step closer to making chips. 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