welding gas question

[metalmagpie]

I used to build very high quality fishing boats back in the '70s. The shell plate joints were lap joints. Done right, they were watertight. So we did...

[metalmagpie]

I used to use automatic centerpunches a lot. I own a Starrett and a General. I have bought replacement tips for both. FYI I like the General better than...

[metalmagpie]

What kind of twist drill drills high speed steel?

metalmagpie...

[metalmagpie]

die yuppie scum

[metalmagpie]

I built a dust trap from a 30 gallon drum once. My idea was to put it inline with my shop vac's suction hose. There was a shop vac port in the center...

[metalmagpie]

Here's one:

...

[metalmagpie]

I didn't say Harris 355s are standalone flowmeters. I said you can attach them directly to cylinders i.e. they have their own regulators.
I understand...

[metalmagpie]

chipmaker4130, flowmeters exist and are used every day that you connect directly to a high pressure cylinder and can put out 20 cfh or even more. For...

[metalmagpie]

OK, I think I have it figured out. Victor gives a table of correction factors for various welding gases:

argon 0.85
CO2 0.81...

[metalmagpie]

The answer as to how much helium would flow is about 63 cfh.

[metalmagpie]

Suppose I put a regulator on an argon bottle and regulate it to exactly 30 psi, and then run it through a flowmeter set to pass exactly 20 cfh.
...

[metalmagpie]

I have something to contribute. I have owned a 7" Atlas shaper and also a 12" Sheldon shaper. It was fun to grind up a tool, put a block into...

[metalmagpie]

Dude, you need a new motherboard. Sorry.

metalmagpie

[metalmagpie]

Real MAPP hasn't been produced for several years now. If you look closely at the yellow cylinders sold today, it will say something like MAPP equivalent....

[metalmagpie]

Andy Lofquist (MLA) now sells a kit which is a taper attachment bit that bolts to the outer end of their tee slot cross-slide table. I got one of those...

[metalmagpie]

My brother has a lab at USC and his students do a ton of 3D printing. I have never really considered 3D printing. He wrote to me the other day and pointed...

[metalmagpie]

If your lathe table is rectangular, that means you have space on the table behind the tailstock end of the lathe. So your AXA stand/rack/tree should go...

[metalmagpie]

As a matter of fact the last 2 blades I bought for my 7x12 were Bahco (made in Germany) and I think they cut great! I haven't had one installed long enough...

[metalmagpie]

It's easy to set the position where it's tight. Set the ball handle to where you want it and tighten the nut on the other end. Pull on the ball handle...

[metalmagpie]

Many of you will be very familiar with how you change the belt position on an old school step head Bridgeport. You grab the handle on the side and pull...