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Forum: Welding Sheet Metal 02-20-2020, 11:03 PM
Replies: 6
Views: 445
Posted By crystallographic
Red=Thoriated Green = pure tung (many brand...

Red=Thoriated
Green = pure tung (many brand names)
Forum: Welding Sheet Metal 02-19-2020, 11:19 AM
Replies: 6
Views: 445
Posted By crystallographic
My son was a welding lead for deep sea robot...

My son was a welding lead for deep sea robot power arm construction for a number of years, welding complete arms of either aluminum, duplex stainless, or Ti. He changed away from Thoriated years ago,...
Forum: Individual Classifieds 02-12-2020, 06:30 PM
Replies: 3
Views: 504
Posted By crystallographic
So then the upper ram is included, but with no...

So then the upper ram is included, but with no blocks or jaws.
Forum: Individual Classifieds 02-12-2020, 01:35 PM
Replies: 3
Views: 504
Posted By crystallographic
Hi Mike, Query: I am seeing dies/jaw assemblies...

Hi Mike,
Query: I am seeing dies/jaw assemblies in the ERCO shown in the photo .... ?
Forum: Basic questions and answers 02-10-2020, 04:07 PM
Replies: 1
Views: 353
Posted By crystallographic
If I were in my first year of metalwork, I would...

If I were in my first year of metalwork, I would make it from 3 pcs, left center, right, and use the two "shoulders" as my seams, putting them on top, but making sure that the part edges were rounded...
Forum: Automotive Projects 02-04-2020, 10:27 PM
Replies: 16
Views: 1,237
Posted By crystallographic
This is a Very tidy job, Robert, and is a joy to...

This is a Very tidy job, Robert, and is a joy to see such detail in the little fits and blends, clear explanations, and nice clean photography. (I know how much extra attention it takes to get...
Forum: General Discussion 02-04-2020, 12:20 PM
Replies: 25
Views: 1,893
Posted By crystallographic
"Sugar" is the result of leaving stainless...

"Sugar" is the result of leaving stainless exposed to air when welding. It is a rough aglomeration of crystals that impedes flow, measurably.

-And with this surface the Fe in the stainless is now...
Forum: Individual Classifieds 02-04-2020, 12:15 PM
Replies: 4
Views: 3,138
Posted By crystallographic
Please PM me?

Please PM me?
Forum: General Discussion 02-03-2020, 01:35 PM
Replies: 25
Views: 1,893
Posted By crystallographic
It will go until it rusts out.:)

It will go until it rusts out.:)
Forum: Basic questions and answers 02-02-2020, 11:47 AM
Replies: 9
Views: 608
Posted By crystallographic
Yes, that is the way the DiAcro turret punch...

Yes, that is the way the DiAcro turret punch works.....
Forum: Automotive Projects 01-28-2020, 06:19 PM
Replies: 230
Views: 56,829
Posted By crystallographic
I dunno about anyone else, but doors have been...

I dunno about anyone else, but doors have been one serious series of headaches for me in chassis fab/mod.s
Good to see you are doing double and triple confirmations of fixed and mobile geometries....
Forum: General Discussion 01-28-2020, 01:48 PM
Replies: 25
Views: 1,893
Posted By crystallographic
Hi Richard, Yeah, I've heated sand-filled tube...

Hi Richard,
Yeah, I've heated sand-filled tube to bend, but inside that red hot tube the sand melts and adheres to the tube walls - maybe okay ... or not. :confused:


I've also bent 2in. steel...
Forum: General Discussion 01-25-2020, 03:38 PM
Replies: 25
Views: 1,893
Posted By crystallographic
I bend what I have to and source out pre-bends...

I bend what I have to and source out pre-bends for jobs that match that.



Pre-bends for a Porsche 901 exh. system -
55016


Headers (stainless) made to duplicate bad originals (airplane),...
Forum: General Discussion 01-24-2020, 04:54 PM
Replies: 25
Views: 1,893
Posted By crystallographic
Hi Bernt, Been thinking about this one I...

Hi Bernt,
Been thinking about this one

I like using water way more than sand - even with using a sand rammer I get more satisfaction.
And tubes are clean when done!

Makes nice roll bars and...
Forum: Basic questions and answers 01-23-2020, 07:09 PM
Replies: 9
Views: 608
Posted By crystallographic
Bought a lot of stuff from Batavia over the...

Bought a lot of stuff from Batavia over the decades ...
My turret punch is a Di Acro - sorry, no help.
Maybe Century Machinery down in Los Angeles?
Forum: Basic questions and answers 01-18-2020, 01:12 PM
Replies: 4
Views: 496
Posted By crystallographic
Thanks for the reminder, David.:) Here is one...

Thanks for the reminder, David.:)
Here is one article, on aircraft aluminum alloys, and has the "H" and "T" groups covered, as David referenced.
...
Forum: Basic questions and answers 01-16-2020, 11:47 PM
Replies: 4
Views: 496
Posted By crystallographic
Ken is correct - 1100 alloy only work hardens....

Ken is correct - 1100 alloy only work hardens. Annealing it is a permanent change, not related at all to aging.
If you just look at the letter designating hardness: "T" or "H" - you will know...
Forum: Welding Sheet Metal 01-04-2020, 02:50 PM
Replies: 19
Views: 2,190
Posted By crystallographic
Global selection, from a global supplier.

Global selection, from a global supplier.
Forum: Automotive Projects 01-03-2020, 02:39 PM
Replies: 280
Views: 126,506
Posted By crystallographic
So glad to see more of your excellent project,...

So glad to see more of your excellent project, Steve.
Yeehaw!
Forum: General Discussion 01-01-2020, 01:28 PM
Replies: 25
Views: 2,337
Posted By crystallographic
That is very cool, Will. Historical pieces coming...

That is very cool, Will. Historical pieces coming back together, with nice fits!
Forum: Individual Classifieds 12-30-2019, 04:50 PM
Replies: 2
Views: 413
Posted By crystallographic
That is quite the fancy set of dies and yokes. ...

That is quite the fancy set of dies and yokes.
Nice slick photography, too.
I'm not seeing the large diameter upper die alignment spring, though, or was that only on the early originals? The spring...
Forum: Welding Sheet Metal 12-30-2019, 04:31 PM
Replies: 19
Views: 2,190
Posted By crystallographic
Hi Sean, Here's one proven baffle install...

Hi Sean,
Here's one proven baffle install design, no distortion, no big heat sinks, no fancy clamping ....

:
54672

54673
The olde bead roller makes twin beads parallel to each other,...
Forum: Welding Sheet Metal 12-30-2019, 04:15 PM
Replies: 19
Views: 2,190
Posted By crystallographic
Hi Scott, The problem with that tank is not the...

Hi Scott,
The problem with that tank is not the design. That design is proven by the tens of thousands of airplanes carrying fuel inside it, for decades, in rough environments. Had there been an...
Forum: General Discussion 12-28-2019, 10:37 AM
Replies: 4
Views: 669
Posted By crystallographic
Will, that is some great support for an...

Will, that is some great support for an independent team. Makes the professional presentation complete!
Forum: Welding Sheet Metal 12-28-2019, 10:31 AM
Replies: 19
Views: 2,190
Posted By crystallographic
Hi Sean, The 1100 will not have the strength of...

Hi Sean,
The 1100 will not have the strength of the 6061, but will join it without cracking, unless you work (hammer or roll) the weld seams a lot. You should be able to bump the welded seams flat...
Showing results 1 to 25 of 2260

 
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