Re: How long would it take you to 3D print this ABS plastic part?

"Snag"  wrote in message news:v7uoqs$2gft7$2@dont-email.me...
On 7/25/2024 6:41 PM, Bob La Londe wrote:

On 7/25/2024 3:14 PM, Jim Wilkins wrote:

"Bob La Londe"  wrote in message news:v7uhei$2f4on$1@dont-email.me...
>
In this case I was mostly just playing.  I have some real parts I'd like
to inject with ABS, but I don't think I have enough machine for it.  I
have considered I might set the whole machine in one of the presses, and
push directly on the piston rod.  20 tons ought to do it doncha think.
Bob La Londe
>
-------------------------
>
According to John Taylor 20 tons is the chamber pressure of a .577 elephant rifle which can solve any problem it's applied to.
(Cordite's pressure increases in African heat.)
However that solution is said to kill at one end and maim at the other.

>
Ah, one of those older lower pressure rounds.  Lots of modern cartridges run around 50,000-55,000 PSI.
>

   With that much surface area on the base of the bullet you don't need
a lot of pressure .
--
Snag
---------------------------
He didn't give a number for the pressure of hot cordite but suggested the pressure (measured at the English factory) had been lowered to cure difficult extraction from double rifles in very hot climates. He wrote that American powders weren't affected as much by heat and could be loaded to higher pressure without causing extraction issues, presumably from talking with rifle-savvy US clients. Apparently reloading was unknown to British hunters.
"It is an astonishing thing how little the average man in Africa knows about the rifles he uses--it is but a very small exaggeration to say that all he really does know is that the bullet comes out of that end which has a hole in it! America is the home of rifle shooting, and there is no doubt that Americans are very much more "rifle-minded" than the British.