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Forum: Automotive Projects 10-16-2018, 08:00 PM
Replies: 5
Views: 275
Posted By crystallographic
Sollis is one of the metal guys to keep an eye...

Sollis is one of the metal guys to keep an eye on.
His eye and technique have come a long way.
A BIG job that is extremely well done, in all the details.
(90% done - and 90% to go...)
:):):)
Forum: Basic questions and answers 10-16-2018, 06:20 PM
Replies: 6
Views: 146
Posted By crystallographic
rolling up a small conic by hand

49176
49177

49178
49179


Helps to have a taper mandrel, like an old candlestick mandrel, used here.
Leather-faced whapper helps form w.o. marks.
hope this helps you. :):)
Forum: Basic questions and answers 10-15-2018, 07:40 PM
Replies: 1
Views: 151
Posted By crystallographic
3003 vs 5052

3003 vs 5052
5052 is double the strength +.
5052 is marine grade aluminum, used on US Coast Guard cutters, fishing boats, etc. And on airplanes.
3003 is easier for some folks to weld, but 5052 is...
Forum: Individual Classifieds 10-14-2018, 01:19 PM
Replies: 9
Views: 512
Posted By crystallographic
Yo Rick, Now I see the Weaver in this unit........

Yo Rick,
Now I see the Weaver in this unit..... yeh, 14ga is right on.

Many's the time the developer went to a manufacturer for production runs, only to have the mfr enter into direct selling...
Forum: General Discussion 10-13-2018, 08:09 PM
Replies: 10
Views: 449
Posted By crystallographic
The man at John Deere said he had run that...

The man at John Deere said he had run that machine for over 35 years, so I guess he meant that changing the machine over to a different operation was time-consuming for him.
Forum: General Discussion 10-13-2018, 04:05 PM
Replies: 10
Views: 449
Posted By crystallographic
John Deere Magee machine

Just a "By the Way..."
I spoke at length with one of the John Deere metalmen a few years ago. His specialty was running the Magee to make the fenders and hoods.
The big takeaway for me:
"The Magee...
Forum: Individual Classifieds 10-11-2018, 10:48 PM
Replies: 3
Views: 454
Posted By crystallographic
Marchant does apply some power -- like that...

Marchant does apply some power -- like that shrinker that curves 1inch I beams.
GROINK!
I love hearing the metals speak.
(limited vocab, tho ... :rolleyes:)
Forum: Events 10-11-2018, 10:44 PM
Replies: 0
Views: 180
Posted By crystallographic
It's Metal Camp time again

Starting another 4day "metal camp" in the morning. Have a number of certified welders, aviation folk, and professionals attending.
Should be rewarding, entertaining, and with some serious focused...
Forum: Basic questions and answers 10-11-2018, 10:33 PM
Replies: 12
Views: 685
Posted By crystallographic
Yep. Yas, and .... yabetcha.

Yep.


Yas, and .... yabetcha.
Forum: Welding Sheet Metal 10-11-2018, 12:47 PM
Replies: 10
Views: 537
Posted By crystallographic
Funny thing about sourcing some stuff is how the...

Funny thing about sourcing some stuff is how the prices vary so much.
The Meco N Midget should be about $125.US, with a standard neck and a tip or three.

Pistol torch (Dillon, Henrob, DHC,...
Forum: Basic questions and answers 10-11-2018, 12:26 PM
Replies: 12
Views: 685
Posted By crystallographic
annealing metal alloys - 6061, done in the field

"Annealing" is a procedure done to soften metals with correct heating to correct temperatures, holding for a correct amount of time, and quenching at a given rate.

Different metal alloys require...
Forum: Basic questions and answers 10-10-2018, 09:18 PM
Replies: 12
Views: 685
Posted By crystallographic
Hi Wes, 6061 is not that bad once you get used...

Hi Wes,
6061 is not that bad once you get used to it, actually.
Yes, you can soften it a bit for 12-18 hours by heating to 650F - black marker burns off - then quench with cold water.
Gas welding...
Forum: Introductions 10-10-2018, 08:47 PM
Replies: 4
Views: 225
Posted By crystallographic
Welcome to the metal gang, Sean. Seems a few...

Welcome to the metal gang, Sean.
Seems a few over-qualified guys now up in Montucky ...
Forum: Individual Classifieds 10-10-2018, 08:45 PM
Replies: 3
Views: 454
Posted By crystallographic
John, That is right about what they are going...

John,
That is right about what they are going for.
Forum: Basic questions and answers 10-02-2018, 01:14 PM
Replies: 21
Views: 1,664
Posted By crystallographic
Hi Dave, Shop annealed or "field annealed"...

Hi Dave,
Shop annealed or "field annealed" means heat softening with no precise oven controls, so using a torch with some sort of temp. indicator for the hot side, holding the temperature for...
Forum: Basic questions and answers 09-29-2018, 05:15 PM
Replies: 21
Views: 1,664
Posted By crystallographic
When I choose material temper I look for how fast...

When I choose material temper I look for how fast it work hardens.
And can I readily shop-anneal critical areas, quickly.
By these simple criteria I can avoid trying to harden up selected full-soft...
Forum: General Discussion 09-25-2018, 03:48 PM
Replies: 6
Views: 391
Posted By crystallographic
Way to go Bill. Good friends having fun on...

Way to go Bill. Good friends having fun on projects.
That course has been shortened a LOT, over the decades - much more of a spectator sport now. Glad to see no snow fell this year.

I see the big...
Forum: Comments and Suggestions 09-24-2018, 12:42 PM
Replies: 2
Views: 391
Posted By crystallographic
That is the Czech spirit, Jaro. This is just...

That is the Czech spirit, Jaro.
This is just one man of many like him. Great perseverance and "how-to" energy!
Yes, I know about the "Round the World Thomas Flyer" because I worked at HAC (Harrah's...
Forum: Basic questions and answers 09-24-2018, 12:27 PM
Replies: 4
Views: 318
Posted By crystallographic
3003 .050 half hard (H14) Look for half sheets...

3003 .050 half hard (H14)
Look for half sheets or "drop" remnants.
Learn to anneal with an O/A torch or a Western air/propain weedburner.
Forum: Basic questions and answers 09-23-2018, 05:50 PM
Replies: 21
Views: 1,664
Posted By crystallographic
Hi Jaro, Maybe your "standardization annealing"...

Hi Jaro,
Maybe your "standardization annealing" = U.S. "normalization" ... ??


By the way, I know one one excellent Czech mechanic who does hydraulics, welding, fabrication, electrics. Nothing...
Forum: Basic questions and answers 09-22-2018, 04:35 PM
Replies: 13
Views: 921
Posted By crystallographic
No angles on uppers, Norm. The large design,...

No angles on uppers, Norm.
The large design, 49" - 39" -31" has uppers and lowers that rotate for doing spiral parts, long parts.


This is a prototype "jib sail" for a wind turbine.
48838
Forum: Basic questions and answers 09-21-2018, 07:49 PM
Replies: 13
Views: 921
Posted By crystallographic
Hi Jay, Flame-cut and welded makes for good...

Hi Jay,
Flame-cut and welded makes for good strong frames.


This is a prototype of ours:
48827


And this is our large design, being made at Columbia Helicopters, now.
Forum: Basic questions and answers 09-20-2018, 12:13 PM
Replies: 13
Views: 921
Posted By crystallographic
Shapes to practice

Hi Jay,
Having an assortment of geometries to practice is helpful:
48803
3003, .040 and .050, half hard or fully annealed

These were created by Howard Booster, a student of mine, in an effort...
Forum: Basic questions and answers 09-19-2018, 05:13 PM
Replies: 13
Views: 921
Posted By crystallographic
Hi Jay, Make sure your upper and lower rolls...

Hi Jay,
Make sure your upper and lower rolls are aligned:
48784
Not leaving tracks like this.


48785
But nice even tracks like this.
Forum: Basic questions and answers 09-19-2018, 04:24 PM
Replies: 8
Views: 439
Posted By crystallographic
The C4R is probably the best-looking of the...

The C4R is probably the best-looking of the Cunningham series of race cars. Looks like an accurate buck, to me.

One of the most functionally-designed race cars ever made, in my opinion. All...
Showing results 1 to 25 of 1963

 
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