If you have a good sketch or drawing, PM it. I'll get a quote from the local laser guy.
http://www.peridotcorp.com/processes.aspx
Dave J.
Search found 1422 matches
- Mon Aug 20, 2012 3:03 pm
- Forum: General Discussion
- Topic: How to make these parts
- Replies: 23
- Views: 4930
- Sat Aug 11, 2012 9:57 pm
- Forum: Gunsmithing
- Topic: Reaming a tube
- Replies: 27
- Views: 22525
Re: Reaming a tube
I'm sure nebse has been all over the Quackenbush site, but I found it very informative. http://www.quackenbushairguns.com/steel_for_airguns.htm BTW, the majority of the steels listed on Q'bush site would be compatable with a HSS reamer, although proper speed/feed and cutting lube is needed. Please r...
- Sat Aug 11, 2012 8:02 pm
- Forum: Gunsmithing
- Topic: Reaming a tube
- Replies: 27
- Views: 22525
Re: Reaming a tube
Here in the US, there is nothing magic about hydraulic tubing. The alloy is often just mild steel. The internal & external finish and dimensions are controlled better than cheaper tubing. Some is Stainless Steel, which can be more difficult to machine. For your machining operations, you need to ...
- Wed Aug 08, 2012 5:17 pm
- Forum: General Discussion
- Topic: Stacked set screws ?
- Replies: 12
- Views: 4932
Re: Stacked set screws ?
My guess as to the problem. You have a modern cup point setscrew, this narrow point bears down on the square steel shaft. Then the knob is used, the narrow point deforms the steel, and it all loosens up. Possible solution: Make the set screw flat across the face that bears on the square shaft. More ...
- Fri Aug 03, 2012 8:20 pm
- Forum: General Discussion
- Topic: Precision Mating Surfaces
- Replies: 26
- Views: 6278
Re: Precision Mating Surfaces
With machining only, I doubt it. Add a reasonable lapping plate, plus skill, and I think it can be done.
Round parts will need honing and lapping.
Any irregular surfaces, not a chance. (Without LOTS of hand work.)
Dave J.
Round parts will need honing and lapping.
Any irregular surfaces, not a chance. (Without LOTS of hand work.)
Dave J.
- Wed Aug 01, 2012 11:46 pm
- Forum: General Discussion
- Topic: Surface Finishing Measureement
- Replies: 2
- Views: 1535
Re: Surface Finishing Measureement
Surface finish is rarely measured in a small shop. The equipment is expensive. However, reference surfaces are routinely used, and compared by eye, with good results. A 32 micro inch finish is quite fine, but you can achieve it using ~600 (or finer) grit sandpaper. (Approx. 32 millionths of an inch ...
- Fri Jul 27, 2012 10:04 pm
- Forum: Lathes
- Topic: Indicator Mount for Lathe Way
- Replies: 21
- Views: 7390
Re: Indicator Mount for Lathe Way
Bill,
Personally, I like it as is. The addition of a clear chip/splash guard would be nice.
Dave J.
Personally, I like it as is. The addition of a clear chip/splash guard would be nice.
Dave J.
- Thu Jul 19, 2012 9:41 pm
- Forum: Lathes
- Topic: Problem cutting groove for eccentric
- Replies: 32
- Views: 8620
Re: Problem cutting groove for eccentric
I ground a tool with a 0.135" width, 1/16" radius, and with a neck 7/8" long. Front clearance is 10*. I could thin it down. It is too wide and the radius is too large to work as I wish. But, I wonder how much thinner it can get and still cut 4140 longitudinally? Additionally, the ecc...
- Wed Jul 18, 2012 9:51 pm
- Forum: General Discussion
- Topic: Machining Graphite
- Replies: 32
- Views: 8751
Re: Machining Graphite
Done some, no big deal. So far you have good suggestions. I'll add, zero rake on tools (flat top) both for lathe and drilling. It acts a little like Brass and trys to pull the tool in. SFM about 100 works well. It takes little force to shear it off, so flimsy tools work OK, never had a chatter probl...
- Mon Jul 16, 2012 9:56 pm
- Forum: Lathes
- Topic: 4-Jaw Gripping Problem Figured Out - What's the Solution?
- Replies: 24
- Views: 4798
Re: 4-Jaw Gripping Problem Figured Out - What's the Solution
But, they aren't, they are below the diameter line. Tightening this pair of jaws tends to force the work piece towards one of the offset jaws and away from the other offset jaw. This can't be good. Well, machinists have been doing it this way for over a hundred years. (With a soft shim.) 1. Do I sh...
- Fri Jul 13, 2012 6:44 pm
- Forum: Lathes
- Topic: 4-Jaw Run Out Question
- Replies: 74
- Views: 11179
Re: 4-Jaw Run Out Question
Great idea.seal killer wrote:Dave--
I have thought about putting an indicator on a flat bar and clamping it in the tool holder. What'cha think?
--Bill
I think a stiff mount is a good thing. Floppy is bad. Mag bases end up in the chip pan.
Dave J.
- Fri Jul 13, 2012 5:46 pm
- Forum: Lathes
- Topic: 4-Jaw Run Out Question
- Replies: 74
- Views: 11179
Re: 4-Jaw Run Out Question
I see a very long flimsy rod thing holding a dial indicator.seal killer wrote:Tell me what you think concerning what you see.
Some day you are going to get a sticky dial, and the rod will flex instead of the dial moving. Just a little warning.............
Dave J.