A while ago bought a new Chinese CJ0618 7x12 Mini Lathe, very similar to the classic Sieg C2 lathe which is sold under different names all over the world. I have a few plans for this lathe, but the main reason for buying it was to finally answer all the questions I get asking whether the Proxxon PD 250/e is worth the money, or if a Chinese lathe is a better deal.
In this video I'm trying to fix the headstock so it properly fits to the bed, to make it's rock solid and doesn't cause the bed to twist when it's installed. None of this video should be taken as educational, it's just a record of what I did while I was learning for myself. Don't do what I say, or what I do. If you want to use the same learning resources I did, check out the video links below.
Scraping Resources:
Stefan Gotteswinter's excellent scraping tutorial: https://www.youtube.com/watch?v=QJXqHpSh3SE
Jan Sverre Haugjord: https://www.youtube.com/@jansverrehaugjord9934
Robin Renzetti on Moore Pattern Hand Scraping: https://www.youtube.com/watch?v=EECJA2ZUVjg
Suburban Tool on machine rebuilding: https://www.youtube.com/watch?v=REeGn4hN1Bg
00:00 Introduction
00:58 Confirming the problem
02:14 Making the shims
10:22 Fitting the shims
15:57 Machining the shims
23:17 Setup for hand scraping
25:36 First scraping pass
29:56 A better setup for scraping the prism way
31:25 An improved scraping pass
32:54 Checking the improved stability
34:44 Outro and next steps
The links below will financially support this channel if you use them to buy stuff:
Tools and Materials:
Traditional Steel Hand Scraper - https://ebay.us/Cd85M2
Sandvik Coromant Carbide Scraper - https://ebay.us/UAzTSP
JB Weld - https://ebay.us/8n9zEG
Machines:
CJ0618 7x12 Mini Lathe - https://ebay.us/GwcMao
Edited with:
Davinci Resolve 18.6.6
audacity 3.3.3
Music:
Easy Lemon by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/legalcode.en)
Source: https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200076&Search=Search
Artist: http://incompetech.com/