Search found 21 matches
- Tue Dec 15, 2015 2:40 am
- Forum: Milling Machines
- Topic: HF mill/drill vs. Mini-lathe milling attachment
- Replies: 16
- Views: 9761
Re: HF mill/drill vs. Mini-lathe milling attachment
There is no substitute for mass. Buy a proper knee mill And, if you happen to make that choice, do NOT fix on a Bridgeport, for they are far from the best possible choice. That's not to say one wouldn't be acceptable, but if you had a choice between a Gorton I-22 Mastermil and a Bridgeport, for exa...
- Sun Dec 13, 2015 11:39 pm
- Forum: Milling Machines
- Topic: HF mill/drill vs. Mini-lathe milling attachment
- Replies: 16
- Views: 9761
HF mill/drill vs. Mini-lathe milling attachment
I would like to eventually get a proper milling machine, but money is a reality, and so now comes the choice between two options; - using my 7x14 lathe as a mill, and buying a Little Machine Shop milling attachment, and collet for cutting tools. The total cost for this set up is right about $300. My...
- Wed Jul 08, 2015 2:01 pm
- Forum: Lathes
- Topic: top ten lathe attachments - because machines are expensive
- Replies: 30
- Views: 9557
top ten lathe attachments - because machines are expensive
If you could rate, by your own judgement, the most useful lathe attachments, what would they be. Would they be by the times you've used them, or might it be by the sear specific nature of use? (eg. i use by quick change tool post all the time, but only a milling attachment can work as a milling atta...
- Tue Feb 24, 2015 5:24 am
- Forum: Casting & Foundry Work
- Topic: Thinking of a homemade furnace - confused on controls
- Replies: 9
- Views: 9311
Re: Thinking of a homemade furnace - confused on controls
Now that straightened out the whole mess! Thank you ever much. There is a 120 volt commercial furnace that can be had for a bit over a thousand dollars, so the kanthal wire must exist, but I see no reason in spending money I don't have to get something via a purchase, when it's much more satisfying ...
- Mon Feb 23, 2015 2:51 am
- Forum: Casting & Foundry Work
- Topic: Thinking of a homemade furnace - confused on controls
- Replies: 9
- Views: 9311
Thinking of a homemade furnace - confused on controls
I simply don't have the massive wad of cash to buy a used oven ($600), even if they could be found in my little nook of the plains, so I have to build one, which is really where I figured things were going to turn to all along. The bits I work on are long and thin. Perhaps a meter and a half by 20 c...
- Sun Feb 08, 2015 12:09 am
- Forum: General Discussion
- Topic: mandrel widening of narrow bar stock
- Replies: 3
- Views: 2033
mandrel widening of narrow bar stock
I'd like to made a shotgun barrel, but I cannot find any resources for the processes involved (other than for rifle barrels, but with a shotgun barrel that amounts to 60% waste!), and steel is expensive, so here's my idea; - take narrower than necessary 4140 and bore out a narrow hole - ream to semi...
- Sat Nov 29, 2014 2:43 pm
- Forum: General Discussion
- Topic: chip size via tensile strength
- Replies: 3
- Views: 2081
chip size via tensile strength
I've gotten the free manual shaper plans that we've probably all seen, and I'm wondering exactly how big of a cut I can make on one of these. Here's my theory; chip size is dictated by tensile strength and a power budget. Lets say that we were cutting a block of A36 at dead soft, with a tensile stre...
- Thu Nov 27, 2014 5:42 pm
- Forum: Lathes
- Topic: mini-lathe milling attachment v HF mill v shaper
- Replies: 10
- Views: 3942
Re: mini-lathe milling attachment v HF mill v shaper
On a second note; what is considered a light cut or a heavy cut on a mini lathe? What numerical figure is considered heavy? Too many variables to be able to provide a reliable number. Type of material, power of the motor, type of cutter, how far the piece extends from the chuck, whether it is suppo...
- Thu Nov 27, 2014 1:21 am
- Forum: Gunsmithing
- Topic: Using a mill to inlet?
- Replies: 10
- Views: 27429
Re: Using a mill to inlet?
I would not use a mill for the task, as it would be painfully slow. Instead, I would use the mill to build a sliding table that would guide an uncut blank around a router bit, which would be mirrored by a plastic stand in bit on a mirrored machine. The table is one single thing, but with two routers...
- Wed Nov 26, 2014 10:30 pm
- Forum: General Discussion
- Topic: Chinese lathe chuck is bad, or am I messing up?
- Replies: 14
- Views: 4226
Re: Chinese lathe chuck is bad, or am I messing up?
Can you define "soft filler strips"? I'm read that grocery store brown bags, cut into strips can help old taper attachments bond, but I don't know if this is that same thing. I do not have a live center right now, only the dead center that came with the lathe. In the future I will get one,...
- Wed Nov 26, 2014 9:34 pm
- Forum: General Discussion
- Topic: Chinese lathe chuck is bad, or am I messing up?
- Replies: 14
- Views: 4226
Chinese lathe chuck is bad, or am I messing up?
I have a 7x14 lathe, 500 watt motor. I had the jaws gripped around a piece of threaded 4140, 1.25in diameter and 4inches long (a hollow cylinder), running at 120 to 150 rpms. My HSS tool bit into the work, traveling into the work about .002 per each revolution. The work was seated into the serrated ...
- Wed Nov 26, 2014 8:12 pm
- Forum: Lathes
- Topic: mini-lathe milling attachment v HF mill v shaper
- Replies: 10
- Views: 3942
mini-lathe milling attachment v HF mill v shaper
the Chinese 7x14 arrived two days ago, with a thin coating of foundry dust and cosmoline. I was turning a bit of 4140, looking at the chips as a guide for heat and when to back off. I never quite grasped the charts for speeds and feeds and go with chip color when possible. The next big buy is a toss...