Lapping Cross & Compound Slide Lathe Ways
Set of 5 Whitcomb 6.5mm Wheel Chucks, Watchmaker Lathe, Jewelers, Step Collets
 | US $98.00 End Date: Wednesday May-23-2012 17:07:58 PDT Buy It Now for only: US $98.00 Buy it now | Add to watch list |
Cool video about jewelers lathe, take a look:
Using the Mike Taglieri Procedure from mini-lathe.com to lap the ways of the cross slide and compound slide on my 7×14 MicroMark Mini-Lathe (instructions: www.mini-lathe.com ) Check out www.nyccnc.com for more!
Boley Precision Bench Model Jeweler's Lathe
 | US $2,400.00 End Date: Saturday May-19-2012 13:29:30 PDT Buy It Now for only: US $2,400.00 Buy it now | Add to watch list |
Comments
@nortonfan100
If you follow the erroneous information in this video, you do so at your own peril. Hand scraping is the tried and true method of obtaining maximum precision and service life of a bearing surface, the most precise machines are hand scraped. A sanded surface presents only one bearing contact point, while a hand scraped surface presents many at any given point along the movement. See YT videos by MuellerNick. There, is a real master for you.
@nortonfan100 Recently I read an article in (I believe) “Home Shop Machinist” about hand scrapping metal surfaces. I’m trying hard to remember why scraping metal is superior to using abrasives to grind these precision surfaces. Please help us all to understand why you believe scraping is better than grinding in this instance. Could it be for the same reasons wood surfaces are scraped to a fine finish, rather than sanded?
.
Roy Lewis Atlanta, Georgia USA
@saunixcomp Thanks buddy.
@efzt Micromark Mini-lathe 7×14
Nice lathe. what is the make and model?
Machine tool ways should only be hand scraped. They are precision bearing surfaces and you are doing damage to these surfaces by using abrasives to improve the fit. It is your lathe and you do as you please with it. I’m just pointing out the errors. For the lathe shown, it would not take long to scrape the surfaces, with home made scrapers. There are many good sources of information on how this is done. Home Shop Machinist, Pratical Machinist and so on. It is worth learning.
Take a look at the video – the whole assembly is disassembled. The motion is done by hand.
When you moved the cross slide and the compound slide back and forth with the abrasive compound did you do it by hand?
Or did you move it back and forth by threading it back and forth with the lead screws?
These can be tricky on a small mill – but delrin should be easy. You’ll want to turn it very slow – think of it like a 3″ tool. I’d start around 750 RPM and experiment with both RPM and feed rate (e.g. IPM). I have previously cut delrin with a slitting saw with a very nice surface finish.
I wanted to get your advice, if possible, on using a slitting saw, manually. I just saw your vid on using a slitting saw to cut delrin and wanted to touch base with you on this, now (if it’s ok, of course). I have a Sherline 5500 [manual] mill and just received a few slitting saws, how do I use them…manually? I went to sherline site but it doesn’t really go into details about feeds, only speeds…can you possibly help?