Thursday, December 6, 2012

Praxis: More along the lines of "The Futility of Gun Control Laws in America." Free downloadable files for CNC gunsmithing!

AR uppers and lowers, Kalashnikov receiver, AR-10 lower, M1911 Frame, etc., etc.
From Wikipedia:
Computer Numerical Control Machines
Most CNC milling machines (also called machining centers) are computer controlled vertical mills with the ability to move the spindle vertically along the Z-axis. This extra degree of freedom permits their use in diesinking, engraving applications, and 2.5D surfaces such as relief sculptures. When combined with the use of conical tools or a ball nose cutter, it also significantly improves milling precision without impacting speed, providing a cost-efficient alternative to most flat-surface hand-engraving work.
CNC machines can exist in virtually any of the forms of manual machinery, like horizontal mills. The most advanced CNC milling-machines, the multiaxis machine, add two more axes in addition to the three normal axes (XYZ). Horizontal milling machines also have a C or Q axis, allowing the horizontally mounted workpiece to be rotated, essentially allowing asymmetric and eccentric turning. The fifth axis (B axis) controls the tilt of the tool itself. When all of these axes are used in conjunction with each other, extremely complicated geometries, even organic geometries such as a human head can be made with relative ease with these machines. But the skill to program such geometries is beyond that of most operators. Therefore, 5-axis milling machines are practically always programmed with CAM.
With the declining price of computers and open source CNC software, the entry price of CNC machines has plummeted.
How many CNC machines do you think there are in the United States today?

7 comments:

Anonymous said...

Many CNC machines have been exported to China and India. The price has plummeted from $300K per unit to as low as $7K in the midwest/rust belt. However, those cheap prices drew in foreign investors who bought the machines from companies who outsourced all the labor to the far east, etc.

SDH said...

Check out this link to a San Diego TV station report titled "People line up to legally make untraceable guns" http://www.10news.com/news/investigations/people-line-up-to-legally-make-untraceable-guns

Even in the Peoples Republic of Mexifornia...

Ed said...

Here is someone that transformed a used $2 shovel into an AK pattern rifle receiver:

http://www.northeastshooters.com/vbulletin/threads/179192-DIY-Shovel-AK-photo-tsunami-warning

Anonymous said...

Folks have been making fine firearms way before the days of computer controlled production. With a good jig setup and some basic skills, one can churn out quite a few designs with little more than hand tools, a small bridgeport and a lathe.

Metalworking, Woodworking, Tailoring, Farming, are all science and not magic. A book or two on each subject and some practical experience is worth more than any case of ammunition or freeze-dried rations.

Maddawg308 said...

I know 4 guys who have lathes and mills that are die-hard IIIpers. When TSHTF, they said they are going to start making things like you wouldn't believe.

Aj said...

Remember, folks. John Browning made the prototype 1911 that he submitted for evaluation in a shed with no electricity.

Loren said...

Some links of relevance to the post, perhaps you might repost:

http://www.lindsaybks.com/
http://www.lindsaybks.com/dgjp/index.html
http://opensourcemachine.org/