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Tempering 6061? (was: Welding 6061 weakens it?)

Some in these groups have opine'd that welding 6061-T6 would make it lose its treatment and result in T1. Aging at room...
15 comments posted 16yrs
posted by invalid
15 comments posted 16yrs posted by invalid

FA-8 years of Machinist's Workshop Magazines

August 2000 through January 2009, all issues in excellent condition. See my ad on ebay at: http://tinyurl.com/np23vj Jef...
0 comments posted 16yrs
posted by jwisnia
0 comments posted 16yrs posted by jwisnia

Forming ("chasing") internal threads?

Snap-On makes this internal thread chasing tool: It comes with what seems to be a selection of tips in different t.p.i....
2 comments posted 16yrs
posted by notme
2 comments posted 16yrs posted by notme

Welding 6061 weakens it?

Lined up a welder to weld a small bit onto a bike frame right at the 1/4 inch plate where the rear wheel attaches to th...
1 comments posted 16yrs
posted by invalid
1 comments posted 16yrs posted by invalid

Zinc-clad primer?

Sherwin-Williams store sells spray paints, one of which is called "Zinc-Clad Cold Galvanize Primer". What is this for?...
4 comments posted 16yrs
posted by invalid
4 comments posted 16yrs posted by invalid

Welding 6061

Have a project which requires 1/4" 6061 plate be welded to 1/16 wall tube 6061. What risk is there of success welding t...
3 comments posted 16yrs
posted by gone
3 comments posted 16yrs posted by gone

Painting weathered, cast parts?

Cast alum. (maybe magnesium) brake caliper. Original paint is chipped off in places, and metal looks oxidized. How to b...
14 comments posted 16yrs
posted by invalid
14 comments posted 16yrs posted by invalid

Spray Painting Woes

The goal: to change the color of a few new, factory-painted steel parts. I lightly sanded all surfaces with 800g emery...
7 comments posted 16yrs
posted by invalid
7 comments posted 16yrs posted by invalid

Painting over anodize?

Is any special preparation require when painting over a newly oxidized steel surface? Will either fine roughing up with...
5 comments posted 16yrs
posted by gone
5 comments posted 16yrs posted by gone

metal shrinkage

As one of my first milling projects, I created a firing pin for a rifle to experiment on the length of the actual pin t...
0 comments posted 16yrs
posted by Q1953
0 comments posted 16yrs posted by Q1953

Liability & responsibility of electrician?

I have been asked to offer an opinion in a sensitive situation. A machinist moved his shop across town and required som...
276 comments posted 17yrs
posted by incognito
276 comments posted 17yrs posted by incognito

Mikron 79 Hobbing Machine

Any online source for information, manuals etc.? I am looking for a machine that will hob small gears, including worms,...
0 comments posted 17yrs
posted by keithwwalker
0 comments posted 17yrs posted by keithwwalker

What is a small milling machine to look for?

What manufacturer should I look for if I want a "hobby" milling machine? Something with a 6x6 or 8x8 (inches) table? FBt
29 comments posted 17yrs
posted by not
29 comments posted 17yrs posted by not

How to extract set screw?

Deep in a large machine (offset printing press) an allen set screw holds a shaft in a casting. The set screw is also lo...
18 comments posted 17yrs
posted by reply
18 comments posted 17yrs posted by reply