Search found 162 matches
- Wed Dec 01, 2010 4:03 am
- Forum: Lathes
- Topic: homebuilt lathe ideas
- Replies: 7
- Views: 3973
homebuilt lathe ideas
Some time ago there was a mailing list on the subject of building a precision lathe from scratch. A lot of ideas were kicked out, discussion ensued, and the group went off into a direction I didn't care to follow. (custom castings and ultra-precision spindles, etc.) I dropped out. I had contributed ...
- Wed Dec 01, 2010 3:42 am
- Forum: Lathes
- Topic: cutting 3-pitch square thread
- Replies: 18
- Views: 6684
Re: cutting 3-pitch square thread
> 4 pitch I don't have the old stub handy to measure; I was going by old Ross lore. But if it is 4 pitch, my lathe will do those with no trouble. Fortunately, I found someone who says he has a copy of an original Ross factory drawing showing the official thread profile, and presumably pitch. He'll m...
- Tue Nov 30, 2010 6:23 am
- Forum: Lathes
- Topic: cutting 3-pitch square thread
- Replies: 18
- Views: 6684
cutting 3-pitch square thread
I have a 1905 Ross rifle I need to rebarrel. The barrel thread is bizarre; 1-1/16 by 3, with a mutant buttress profile, or an Acme with the front slanted and the back square. The manual for my 1955 Atlas 10x60 says that, with a bit of jiggery and some additional intermediate gears, that it can indee...
- Sat Nov 20, 2010 4:32 pm
- Forum: General Discussion
- Topic: The Rogers Rockwell tester
- Replies: 2
- Views: 1567
Re: The Rogers Rockwell tester
I found several on eBay for $55-$75.
- Fri Nov 19, 2010 11:35 pm
- Forum: General Discussion
- Topic: The Rogers Rockwell tester
- Replies: 2
- Views: 1567
The Rogers Rockwell tester
I did a search on "rogers rockwell" and the forum search function didn't turn up anything, so hopefully this topic hasn't been worn out already. Here's a link to a site where a guy has plans and pictures of a DIY Rockwell tester: http://rayrogers.com/rhc_plans.htm Basically, it uses two le...
- Mon Nov 01, 2010 11:36 am
- Forum: Lathes
- Topic: Using a Cat-head or Spider to set -up on a Maximat V10
- Replies: 8
- Views: 4548
Re: Using a Cat-head or Spider to set -up on a Maximat V10
Offsetting the spindle to the back (or the front way toward the operator) spreads the load from the cutting tool more toward the back way, equalizing pressure and wear. I haven't personally encountered a manual lathe with a noticeable offset, but it seems to be very common on slant-bed CNC machines....
- Mon Nov 01, 2010 11:27 am
- Forum: Milling Machines
- Topic: benefits of the horizontal mill
- Replies: 19
- Views: 10005
Re: benefits of the horizontal mill
Now I'll be waiting for randyc's "crazy stuff you can do with a horizontal mill" thread!
- Sun Oct 31, 2010 8:49 am
- Forum: Milling Machines
- Topic: benefits of the horizontal mill
- Replies: 19
- Views: 10005
benefits of the horizontal mill
I worked in a machine shop that had no horizontal mills. Most of my machinist books I bought referred to horizontals as "obsolete." Used ones went for a fraction of the price of verticals. Then I got a bunch of older books, and they only discussed horizontals; many of them only mentioned v...
- Sun Oct 31, 2010 8:22 am
- Forum: Milling Machines
- Topic: Lathe Operations on a Mill
- Replies: 9
- Views: 3187
Re: Lathe Operations on a Mill
The most common way I've seen to do it is to make an adapter to hold a lathe bit in the taper or collet in the locked quill, or sometimes an adapter bolted to the head, and to use a spindex and tailstock with a motor drive. The spindex axis becomes Z, the quill becomes Y, and the left-right X table ...
- Sun Oct 31, 2010 6:36 am
- Forum: Lathes
- Topic: EMCO Compact 5 CNC lathe
- Replies: 26
- Views: 16689
Re: EMCO Compact 5 CNC lathe
Oooohhhh niiice! The simplest thing is to find out if it's stepper or servo driven, pick the controller hardware that fits your budget - Geckos are popular - and controller software. I use Mach3. You might want to check out TurboCNC and EMC2; I haven't looked at their lathe support, but they're free.
- Mon Oct 25, 2010 4:35 pm
- Forum: Lathes
- Topic: plain bearing headstock accuracy
- Replies: 19
- Views: 8306
Re: plain bearing headstock accuracy
Thanks, guys!
- Sat Oct 23, 2010 10:35 pm
- Forum: Lathes
- Topic: plain bearing headstock accuracy
- Replies: 19
- Views: 8306
plain bearing headstock accuracy
Looking at my old machinist books I see discussion of the differences between plain and roller bearing headstocks. They mostly talk about oiling, scraping, and re-babbitting the plain bearings. I changed the headstock bearings in my 10" bench lathe a few years ago. It uses taper roller bearings...