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Forum: Basic questions and answers 02-18-2019, 12:46 PM
Replies: 22
Views: 2,575
Posted By crystallographic
Finish work - "metal finishing"

Thank you Marcus and John. :)


The surface is decent but needs some fine-tuning.
So, by using a file along with a spoon and "dolly" this surface should come around nicely.


51470
I use my...
Forum: Basic questions and answers 02-17-2019, 04:52 PM
Replies: 15
Views: 563
Posted By crystallographic
Perhaps - but the Hughes H1 was a significant...

Perhaps - but the Hughes H1 was a significant exception, though it is credited by the Smithsonian as being the foundation for the Spitfire, the P40, and the Zero....
Forum: Welding Sheet Metal 02-16-2019, 12:38 PM
Replies: 7
Views: 389
Posted By crystallographic
Yes Bob, it's nice when a new filler is developed...

Yes Bob, it's nice when a new filler is developed that takes all of the exhaustive mischief out of the solution. :):)
I remember when cast gray iron got a filler (also containing Ti) that took all...
Forum: Basic questions and answers 02-16-2019, 12:29 PM
Replies: 20
Views: 945
Posted By crystallographic
So you are making a stepped part. And the...

So you are making a stepped part.
And the guidelines for corners:
inside corners need flanges stretched
outside corners need flanges shrunk


When you are working a series of...
Forum: Basic questions and answers 02-15-2019, 04:08 PM
Replies: 22
Views: 2,575
Posted By crystallographic
Hammering welds on flat work

51388

I start the first go-over with my "big" body hammer - a 14oz. double face deep-reach, either my Plomb or my Fairmount - this one is a re-handled Fairmount, (with the hand-dressed octagonal...
Forum: Basic questions and answers 02-15-2019, 03:04 PM
Replies: 22
Views: 2,575
Posted By crystallographic
Thanks Fred. Yeh, edu.stuff in the works. :)

Thanks Fred.
Yeh, edu.stuff in the works. :)
Forum: Welding Sheet Metal 02-15-2019, 12:25 PM
Replies: 7
Views: 389
Posted By crystallographic
[QUOTE=AllyBill;153306]Hate to say this, but I...

[QUOTE=AllyBill;153306]Hate to say this, but I was asked to weld a pair of 7075 skins for a restoration project a few years back and I glued them back together using strips of native material...
Forum: Basic questions and answers 02-14-2019, 06:09 PM
Replies: 22
Views: 2,575
Posted By crystallographic
Flat panel hole repairs - 5052

51376
Going on to the other end of the olde Luscombe panel, holes cut to add more usability (gauges) must go away.
51377
Pattern paper has helpful translucence that enables layout of stuff...
Forum: Welding Sheet Metal 02-14-2019, 01:52 PM
Replies: 7
Views: 389
Posted By crystallographic
Welding 7075 - GTAW

This is a nice break-through for tubing parts manufacturers - link below.

While 2024 has been welded since 1943, that I know of, having 7075 enter the weldable realms is very nice.
(Wasn't it...
Forum: Introductions 02-13-2019, 07:58 PM
Replies: 5
Views: 133
Posted By crystallographic
Hi Russ, Welcome to the group. Chico has had...

Hi Russ,
Welcome to the group.
Chico has had some good car guys over the years, like Eddie Meyers and Charlie Rosa.
The Nomad will be a pretty swell ride when done.
:)
Forum: Basic questions and answers 02-09-2019, 01:14 PM
Replies: 20
Views: 945
Posted By crystallographic
I guess I am confused by the silver, black and...

I guess I am confused by the silver, black and yellow paint jobs to where I cannot grasp exactly what you are doing ...? I keep looking at the photos without learning anything - except for a skinned...
Forum: Welding Sheet Metal 02-09-2019, 01:10 PM
Replies: 29
Views: 2,702
Posted By crystallographic
Yes, and you only have to tig the back side of...

Yes, and you only have to tig the back side of your welds to get the full penetration, so you save all that time spent wiping off the flux.:)
Forum: Introductions 02-09-2019, 12:01 PM
Replies: 3
Views: 130
Posted By crystallographic
Welcome to the group Kodee.

Welcome to the group Kodee.
Forum: Basic questions and answers 02-06-2019, 02:05 PM
Replies: 25
Views: 1,318
Posted By crystallographic
The drop-ball test is pretty severe I admit, and...

The drop-ball test is pretty severe I admit, and I do not know how ANSI derived this standard.

But as I have been told by other manufacturers, the product is safety eyewear, and at this point in...
Forum: Welding Sheet Metal 02-04-2019, 01:00 PM
Replies: 5
Views: 390
Posted By crystallographic
For the very new beginner, some cheap easy...

For the very new beginner, some cheap easy informative helpful reading:
https://www.tinmantech.com/products/books-booklets/metalworking-booklets/authentic-aluminum-gas-welding.php
.... or some...
Forum: Introductions 02-03-2019, 07:29 PM
Replies: 5
Views: 133
Posted By crystallographic
Ole, (I'm thinking of the old Poem - "Siege of...

Ole,
(I'm thinking of the old Poem - "Siege of Copenhagen"
.... ten thousand Swedes ran through the weeds ...)
Welcome to the metal gang,
Forum: Basic questions and answers 02-03-2019, 07:22 PM
Replies: 4
Views: 263
Posted By crystallographic
I did not see a close-up image of the seam, but...

I did not see a close-up image of the seam, but if it is a "mash-seam" rotary spot weld seam, then maybe brazing might be good - after spot welding it together - or screwing it.

But if I were...
Forum: Basic questions and answers 02-03-2019, 06:48 PM
Replies: 18
Views: 734
Posted By crystallographic
Passivation method, from my "Welding Stainless" booklet

Hi Mark,
In the little booklet I wrote on "Welding Stainless" I mention
1) pickling stainless
2) bright dip for stainless
and
3) passivation.
Quoting from my booklet:
..... "In any case,...
Forum: Basic questions and answers 02-03-2019, 06:42 PM
Replies: 4
Views: 263
Posted By crystallographic
This old tank in your pictures is formed and...

This old tank in your pictures is formed and soldered, Jaro.
Not welded.
Material may be a lead-coated steel, which we call "terne plate" and millions of tanks were made this way, out of terne.
No...
Forum: Basic questions and answers 02-01-2019, 09:00 PM
Replies: 18
Views: 734
Posted By crystallographic
I'm familiar with alloy 316 for aviation.... ...

I'm familiar with alloy 316 for aviation....
"Heat and beat" are the bywords we use in the USA .... for working stainless to appreciable degrees ...
Be careful on your input heat - no orange.
Red,...
Forum: Basic questions and answers 02-01-2019, 08:37 PM
Replies: 25
Views: 1,318
Posted By crystallographic
TM2000 for electric welding, S10-S14

Norm,
I use the same TM Lens for all my gas work, so 4130, 6061, 316, cast iron, and SiBronze all get the same visual nitpick. :)
For Tig, I do not like the auto-dark lens Sam-I-Am, I do not like...
Forum: Basic questions and answers 02-01-2019, 05:18 PM
Replies: 25
Views: 1,318
Posted By crystallographic
Prescription safety welding glasses

We had meniscus blanks made of the TM2000 glass, and then we had them ground on the convex to a +3 diopter. Nice product, with Titmus safety frames.
So we sent the nice new spectacles out for safety...
Forum: Basic questions and answers 01-31-2019, 12:33 PM
Replies: 18
Views: 734
Posted By crystallographic
All 300 series stainless needs passivation after...

All 300 series stainless needs passivation after welding.
ALL.
Here is your homework assignment: do an internet search on "passivation of welded stainless steel."
Forum: Basic questions and answers 01-30-2019, 07:57 PM
Replies: 18
Views: 734
Posted By crystallographic
Hi TX, Welding stainless always needs to have...

Hi TX,
Welding stainless always needs to have passivation done or the welds rust.
You order the stainless in the hardness you need - full soft or 1/4 hard. You really don't want to have to anneal...
Forum: Basic questions and answers 01-30-2019, 07:49 PM
Replies: 18
Views: 734
Posted By crystallographic
passivate stainless welds

Yeah, and be sure to passivate the whole welded tank too, or the welds will rust.
Showing results 1 to 25 of 2082

 
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