You as a hack machinist can copy any of these? This is the tech from 12 years ago. Good luck.
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Have you cut anything other than brass steel or aluminum? If not you don't know what you are talking about.
Also some recent comparisons.
6061 aluminum selling for $2.20-4.50/ pound. 7075 $4-7/ pound.
Titanium 6al4v $10-30/ pound.
Inconel $20-80/ pound
Remember 90+% will be turned into chips. You still have to have enough to chuck on, can't really nest parts so that adds for each piece.
More for everybody else.
As to those French cans, most at the beginning are only rated for 22lr only and made out of 2014 or 2024 aluminum (equivalent of duraluminum that they claim).
The browning one (still for 22lr) is $106 and made of aluminum with stainless thread.
Ase eco is $134. Still aluminum, still 22lr.
Ase sl7i 30 cal non magnum at $660 is cast and welded black steel and 300 series stainless. 20oz and 6.3" long, 1.75" Dia and does 30db only.
Sl8i 300blk, $938. 29-31 dba subsonic, 18-24 dba super sonic. Black steel and 300 stainless. 19.2 Oz, 7.8" long, 1.7" dia
Good luck cleaning most of them.
Comparisons from silencershop (some out of stock)
Silencer Co warlock. 22lr aluminum. $199. How much did they pay in taxes already?
Gemtech tracker. Titanium aluminum, 30 cal. $470.
Ocl polonium. 17-4, 30 cal. $532.
There are 12 30 cal cans cheaper than the sl7i, and 55 that they list cheaper than the sl8i.