Sunday, August 30, 2015

Peter G: Your Order is Ready

More Learning

If you are thinking of getting into CNC milling, think of the Sherline product as a learning tool, because its weak motor means you won't get any project finished until Americans start going to church again, and letting it influence their lives.  I need to mill a 3" wide piece of 6061 aluminum doown to 2.686".  I wrote a snmall specific application to mill any piece of aluminum to a specific height.  I can remove 0.01" layers at a time, at 3 in/min.  On a big mill, you could take off much bigger layers than that.  The temptation to buy bigger gets stronger and stronger.  Sherline's lathes seem to have enough power, but the same motor on the lathe seems underpowered.

I am learning a number of tricks.  When actually milling, feed 3 in/min.  On the return stroke across a milled surface or when moving an axis without any milling, use 100 in/min.

UPDATE:  For some reason 10 in/min at 0.01" is working well, leaving a perfectly smooth, almost mirrored surface.

Saturday, August 29, 2015

Gutsy Trump

From August 27, 2015 CNN:
Washington (CNN)Donald Trump said Thursday he is opposed to tightening gun laws in the U.S. but is in favor of addressing mental health to prevent shootings, one day after a man shot two journalists on live television.

"This isn't a gun problem, this is a mental problem," Trump told CNN's Chris Cuomo on "New Day." "It's not a question of the laws, it's really the people."

Calling the gunman a "very sick man," Trump said mental illness is "a massive problem" in the U.S. He suggested more resources should be devoted to addressing mental health -- hoping to prevent shootings like the one in Virginia, which he called "really, very sad."

Flying With Loaded Magazines

The last time I checked a handgun, TSA insisted that ammunition in magazines was not allowed in the locked firearms case, only stored in a ammunition box.  This meant discarding a bunch of JHPs, and going the a bit of work reloading at the far end.  This time, I am including a copy of TSA's web page:
Firearms must be unloaded and locked in a hard-sided container and transported as checked baggage only. Firearm parts, including firearms frames and receivers, must also be placed in checked baggage and are prohibited in carry-on baggage.

Ammunition

  • Firearm magazines and ammunition clips, whether loaded or empty, must be securely boxed or included within a hard-sided case containing an unloaded firearm.
  • Small arms ammunition, including ammunition not exceeding .75 caliber for rifle or pistol and shotgun shells of any gauge, may be carried in the same hard-sided case as the firearm, as described in the packing guidelines above.

Is this clear enough?

It appears some airlines have additional silly rules:
Ensure small arms ammunition is packed in the manufacturer's original package or securely packed in fiber, wood, plastic or metal boxes and provide separation for cartridges.

What are they worried about?  EMP?

Accuracy Guarantee on Ammo

I bought some armor piercing .223 from Lucky Gunner, and I was surprised to see an accuracy guarantee:


I have bought SS109 before, but never with an accuracy guarantee.

Washington D.C. Gun Control and the Battle of Bladensburg

Often considered the most embarrassing battle of the War of 1812, James Gibson explains the failure as a consequence of a city ordinance banning the militia from having flints for their arms.  Some stupid is not new.

King of the Beasts

Curiously, I can't find any uses of his phrase in books before 1800.