Karl Townsend wrote:

On Sun, 28 Oct 2012 19:54:23 -0500, "Pete C."
wrote:


Karl Townsend wrote:

Very nice, how does it work? Does the power control help on thin
sheetmetal? Some sample weld pics? I've got to get one of those spot
welders the next time I've got a 20% coupon. I probably wouldn't use it
too often, but for the odd bit of shetmetal work I bet it would be
invaluable.

I am extremely pleased with the weld on thin stuff. That was the
motivation this. 40 thou stock would just burn a hole, I got great
welds with it set to 180 volt and 2.7 sec on this material.

Pics of welded scrap wouldn't show much. I'll try to take a pic of
rails welded in AK47 or MG42 when i do the project. This was the
project to do the project.

Karl

Sounds interesting, would like to see.

Have you done one of these yet? http://wpnet.us/jack_screws.jpg

I bought some of the AR15 forgings but haven't machined them. "The
Kid" has an FFL so he buys complete lowers very inexpensively. Still,
this would be a fun project.

Is the guy in that pic machining the part just clamped with scrap and
Kant twist clamps??? I'd build custom softjaws for each op if i were
doing it, then knock out at least 25 units on the CNC.

Karl

Scrap and Kant-Twist, with a couple jack screws for extra support. No
issues on a manual mill. The only CNC mill I have at the moment is a
converted mini mill which does a nice job engraving the selector and my
logo, but doesn't have the HP/travel/accuracy to do the real work. At
any rate it takes a day and a half to do one, a long day machining, then
half the next for CNC engraving and anodizing.